update cargo packages

* use better data struct for netplay servers

* more

.cargo/config.toml

@@ -1,2 +1,5 @@
 [target.'cfg(target_arch = "x86_64")']
 rustflags = ["-C", "target-cpu=x86-64-v3"]
+
+[target.'cfg(target_arch = "aarch64")']
+rustflags = ["-C", "target-cpu=cortex-a76"]

.github/workflows/build.yml

@@ -11,65 +11,100 @@ env:
 
 jobs:
   build-linux:
-    runs-on: ubuntu-latest
-    env:
-      TARGET: x86_64-unknown-linux-gnu
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-24.04
+            target: x86_64-unknown-linux-gnu
+            arch: linux-x86_64
+          - os: ubuntu-24.04-arm
+            target: aarch64-unknown-linux-gnu
+            arch: linux-aarch64
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
-      - name: Install sdl2 headers
-        run: |
-          sudo apt -y install libsdl2-dev
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
+          target: ${{ matrix.target }}
           rustflags: ""
+      - name: Install SDL Dependencies
+        # https://wiki.libsdl.org/SDL3/README/linux#build-dependencies
+        uses: awalsh128/cache-apt-pkgs-action@v1
+        with:
+          packages: build-essential git make \
+            pkg-config cmake ninja-build gnome-desktop-testing libasound2-dev libpulse-dev \
+            libaudio-dev libjack-dev libsndio-dev libx11-dev libxext-dev \
+            libxrandr-dev libxcursor-dev libxfixes-dev libxi-dev libxss-dev \
+            libxkbcommon-dev libdrm-dev libgbm-dev libgl1-mesa-dev libgles2-mesa-dev \
+            libegl1-mesa-dev libdbus-1-dev libibus-1.0-dev libudev-dev fcitx-libs-dev \
+            libpipewire-0.3-dev libwayland-dev libdecor-0-dev liburing-dev
+          version: ${{ matrix.target }}-1.0
       - name: Build
         run: |
-          cargo build --release -v --target=${{ env.TARGET }}
+          cargo build --release -v --target=${{ matrix.target }}
+          mkdir output
+          cp target/${{ matrix.target }}/release/gopher64 output/gopher64-${{ matrix.arch }}
       - name: Upload file
         uses: actions/upload-artifact@v4
         with:
-          name: gopher64-linux
-          path: target/${{ env.TARGET }}/release/gopher64
+          name: gopher64-${{ matrix.arch }}
+          path: output/gopher64-${{ matrix.arch }}
 
   build-windows:
-    runs-on: windows-latest
-    env:
-      TARGET: x86_64-pc-windows-msvc
+    runs-on: windows-2025
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-pc-windows-msvc
+            arch: windows-x86_64
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
+          target: ${{ matrix.target }}
           rustflags: ""
       - name: Build
         run: |
-          cargo build --release -v --target=${{ env.TARGET }}
+          cargo build --release -v --target=${{ matrix.target }}
+          mkdir output
+          cp target/${{ matrix.target }}/release/gopher64.exe output/gopher64-${{ matrix.arch }}.exe
       - name: Upload file
         uses: actions/upload-artifact@v4
         with:
-          name: gopher64-windows
-          path: target/${{ env.TARGET }}/release/gopher64.exe
+          name: gopher64-${{ matrix.arch }}
+          path: output/gopher64-${{ matrix.arch }}.exe
 
   build-macos:
-    runs-on: macos-latest
-    env:
-      TARGET: x86_64-apple-darwin
+    runs-on: macos-14
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-apple-darwin
+            arch: mac-x86_64
+          - target: aarch64-apple-darwin
+            arch: mac-aarch64
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          target: ${{ env.TARGET }}
+          target: ${{ matrix.target }}
           rustflags: ""
       - name: Build
         run: |
-          cargo build --release -v --target=${{ env.TARGET }}
+          cargo build --release -v --target=${{ matrix.target }}
+          mkdir output
+          cp target/${{ matrix.target }}/release/gopher64 output/gopher64-${{ matrix.arch }}
       - name: Upload file
         uses: actions/upload-artifact@v4
         with:
-          name: gopher64-mac
-          path: target/${{ env.TARGET }}/release/gopher64
+          name: gopher64-${{ matrix.arch }}
+          path: output/gopher64-${{ matrix.arch }}

.github/workflows/lint.yml

@@ -19,6 +19,18 @@ jobs:
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           components: clippy, rustfmt
+      - name: Install SDL Dependencies
+        # https://wiki.libsdl.org/SDL3/README/linux#build-dependencies
+        uses: awalsh128/cache-apt-pkgs-action@v1
+        with:
+          packages: build-essential git make \
+            pkg-config cmake ninja-build gnome-desktop-testing libasound2-dev libpulse-dev \
+            libaudio-dev libjack-dev libsndio-dev libx11-dev libxext-dev \
+            libxrandr-dev libxcursor-dev libxfixes-dev libxi-dev libxss-dev \
+            libxkbcommon-dev libdrm-dev libgbm-dev libgl1-mesa-dev libgles2-mesa-dev \
+            libegl1-mesa-dev libdbus-1-dev libibus-1.0-dev libudev-dev fcitx-libs-dev \
+            libpipewire-0.3-dev libwayland-dev libdecor-0-dev liburing-dev
+          version: lint-1.0
       - name: Rustfmt Check
         uses: actions-rust-lang/rustfmt@v1
       - name: Lint

.gitignore

@@ -3,10 +3,6 @@
 debug/
 target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
 # These are backup files generated by rustfmt
 **/*.rs.bk
 

Cargo.toml

@@ -1,36 +1,43 @@
 [package]
 name = "gopher64"
-version = "0.1.13"
-edition = "2021"
+version = "1.0.8"
+edition = "2024"
+rust-version = "1.85"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-dirs = "5.0"
+dirs = "6.0"
 zip = "2.1"
 governor = "0.8"
 sevenz-rust = "0.6"
 chrono = "0.4"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-eframe = "0.30"
-rfd = "0.15"
+serde-big-array = "0.5"
+eframe = { version = "0.31", default-features = false, features = ["wayland", "x11", "wgpu"] }
 sha2 = "0.10"
 rusttype = "0.9"
-futures = "0.3"
-sdl2-sys = "0.37"
+sdl3-sys = { version = "0.4", features = ["build-from-source-static"] }
+rfd = { version = "0.15", default-features = false, features = ["xdg-portal", "tokio"] }
+tokio = {version = "1.43", features = ["rt-multi-thread", "macros"] }
 spin_sleep = "1.3"
-clap = { version = "4.4", features = ["derive"] }
-
-[dependencies.sdl2]
-version = "0.37"
-default-features = false
-features = ["static-link","bundled"]
+encoding_rs = "0.8"
+mimalloc = "0.1"
+regex = "1.11"
+tungstenite = "0.26"
+socket2 = "0.5"
+fatfs = "0.3"
+postcard = { version = "1.1", features = ["use-std"] }
+clap = { version = "4.5", features = ["derive"] }
+reqwest = { version = "0.12", default-features = false, features = ["http2","rustls-tls","charset","json"] }
 
 [build-dependencies]
 winres = "0.1"
-cc = { version = "1.0", features = ["parallel"] }
+bindgen = "0.71"
+cc = { version = "1.2", features = ["parallel"] }
 
 [profile.release]
-lto = true
 codegen-units = 1
+strip = true
+panic = "abort"

README.md

@@ -1,29 +1,30 @@
 # gopher64
+Gopher64 can be used via its GUI or the command line.
 
-```
-Usage: gopher64 [OPTIONS] [GAME]
+## wiki
 
-Arguments:
-  [GAME]  
+https://github.com/gopher64/gopher64/wiki
+
+## discord
+
+https://discord.gg/9RGXq8W8JQ
+
+## controls
+
+Keys are mapped according to [these defaults](https://github.com/gopher64/gopher64/wiki/Default-Keyboard-Setup). Xbox-style controllers also have a [default mapping applied](https://github.com/gopher64/gopher64/wiki/Default-Gamepad-Setup).
+
+You can create you own mappings by running `./gopher64 --configure-input-profile my_profile`. You then bind that profile to a port: `./gopher64 --bind-input-profile my_profile --port 1`
+
+In order to use a controller (for example, an Xbox controller), run `./gopher64 --list-controllers` to get a list of attached controllers, and then assign it by doing `./gopher64 --assign-controller <controller_number> --port 1`
+
+## netplay
+
+Gopher64 supports netplay (online play with others). It has a few public netplay servers. If you are interested in running a public netplay server, please let me know (open an issue or discussion, or contact me on Discord). You can also run the server (https://github.com/simple64/simple64-netplay-server) yourself on a LAN.
+
+## portable mode
+
+If you would like to keep all the game data in the same folder as executable, you just need to create a file called "portable.txt" in the same directory as the executable.
 
-Options:
-  -f, --fullscreen
-          
-  -c, --configure-input-profile <PROFILE_NAME>
-          Create a new input profile (keyboard/gamepad mappings).
-  -b, --bind-input-profile <PROFILE_NAME>
-          Must also specify --port. Used to bind a previously created profile to a port
-  -l, --list-controllers
-          Lists connected controllers which can be used in --assign-controller
-  -a, --assign-controller <CONTROLLER_NUMBER>
-          Must also specify --port. Used to assign a controller listed in --list-controllers to a port
-  -p, --port <PORT>
-          Valid values: 1-4. To be used alongside --bind-input-profile and --assign-controller
-  -h, --help
-          Print help
-  -V, --version
-          Print version
-```
 ## goals
 
 1. Performance. I want to be able to use this emulator on my laptop.
@@ -32,19 +33,12 @@ Options:
 
 ## building and usage
 
-1. Install rust: https://www.rust-lang.org/tools/install
-2. `git clone --recursive https://github.com/gopher64/gopher64.git`
-3. `cd gopher64`
-4. `cargo build --release`
-5. `./target/release/gopher64 /path/to/rom.z64`
-
-## controls
-
-Keys are mapped according to mupen64plus defaults: https://mupen64plus.org/wiki/index.php/KeyboardSetup#2._Default_Key_Mappings_for_SDL-Input_Plugin. Xbox-style controllers also have a default mapping applied.
-
-You can create you own mappings by running `./gopher64 --configure-input-profile my_profile`. You then bind that profile to a port: `./gopher64 --bind-input-profile my_profile --port 1`
-
-In order to use a controller (for example, an Xbox controller), run `./gopher64 --list-controllers` to get a list of attached controllers, and then assign it by doing `./gopher64 --assign-controller <controller_number> --port 1`
+1. Linux only: install the SDL3 dependencies: https://wiki.libsdl.org/SDL3/README/linux
+2. Install rust: https://www.rust-lang.org/tools/install
+3. `git clone --recursive https://github.com/gopher64/gopher64.git`
+4. `cd gopher64`
+5. `cargo build --release`
+6. `./target/release/gopher64 /path/to/rom.z64`
 
 ## contributing
 

build.rs

@@ -1,6 +1,8 @@
 fn main() {
     println!("cargo::rerun-if-changed=parallel-rdp");
+    println!("cargo::rerun-if-changed=src/compat");
 
+    let mut simd_build = cc::Build::new();
     let mut build = cc::Build::new();
     build
         .cpp(true)
@@ -50,13 +52,20 @@ fn main() {
         .include("parallel-rdp/parallel-rdp-standalone/vulkan")
         .include("parallel-rdp/parallel-rdp-standalone/vulkan-headers/include")
         .include("parallel-rdp/parallel-rdp-standalone/util")
-        .includes(std::env::var("DEP_SDL2_INCLUDE"));
+        .include(
+            std::path::PathBuf::from(std::env::var("DEP_SDL3_OUT_DIR").to_owned().unwrap())
+                .join("include"),
+        );
 
-    #[cfg(target_os = "windows")]
-    {
-        #[cfg(target_arch = "x86_64")]
-        {
+    let os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
+    let arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap();
+    if os == "windows" {
+        if arch == "x86_64" {
             build.flag("/arch:AVX2");
+        } else if arch == "aarch64" {
+            panic!("unsupported platform")
+        } else {
+            panic!("unknown arch")
         }
         build.flag("-DVK_USE_PLATFORM_WIN32_KHR");
 
@@ -64,14 +73,103 @@ fn main() {
             .set_icon("data/icon.ico")
             .compile()
             .unwrap();
-    }
-    #[cfg(any(target_os = "linux", target_os = "macos"))]
-    {
-        #[cfg(target_arch = "x86_64")]
-        {
+    } else if os == "linux" || os == "macos" {
+        if arch == "x86_64" {
             build.flag("-march=x86-64-v3");
+        } else if arch == "aarch64" {
+            build.flag("-march=armv8.2-a");
+            simd_build.flag("-march=armv8.2-a");
+            simd_build.flag("-DSSE2NEON_SUPPRESS_WARNINGS");
+            simd_build.file("src/compat/aarch64.c");
+        } else {
+            panic!("unknown arch")
         }
+    } else {
+        panic!("unknown OS")
     }
 
     build.compile("parallel-rdp");
+
+    let out_path = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
+
+    let parallel_bindings = bindgen::Builder::default()
+        .header("parallel-rdp/interface.hpp")
+        .allowlist_function("rdp_init")
+        .allowlist_function("rdp_close")
+        .allowlist_function("rdp_set_vi_register")
+        .allowlist_function("rdp_update_screen")
+        .allowlist_function("rdp_process_commands")
+        .allowlist_function("rdp_check_callback")
+        .allowlist_function("rdp_new_processor")
+        .allowlist_function("rdp_check_framebuffers")
+        .allowlist_function("rdp_full_sync")
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+        .generate()
+        .expect("Unable to generate bindings");
+
+    parallel_bindings
+        .write_to_file(out_path.join("parallel_bindings.rs"))
+        .expect("Couldn't write bindings!");
+
+    if arch == "aarch64" {
+        let simd_bindings = bindgen::Builder::default()
+            .header("src/compat/sse2neon/v1.8.0/sse2neon.h")
+            .allowlist_function("_mm_setzero_si128")
+            .allowlist_function("_mm_set_epi8")
+            .allowlist_function("_mm_movemask_epi8")
+            .allowlist_function("_mm_shuffle_epi8")
+            .allowlist_function("_mm_packs_epi16")
+            .allowlist_function("_mm_set_epi16")
+            .allowlist_function("_mm_cmpeq_epi8")
+            .allowlist_function("_mm_and_si128")
+            .allowlist_function("_mm_set1_epi8")
+            .allowlist_function("_mm_mullo_epi16")
+            .allowlist_function("_mm_cmpeq_epi16")
+            .allowlist_function("_mm_add_epi16")
+            .allowlist_function("_mm_slli_epi16")
+            .allowlist_function("_mm_mulhi_epi16")
+            .allowlist_function("_mm_srai_epi16")
+            .allowlist_function("_mm_andnot_si128")
+            .allowlist_function("_mm_or_si128")
+            .allowlist_function("_mm_mulhi_epu16")
+            .allowlist_function("_mm_sub_epi16")
+            .allowlist_function("_mm_unpacklo_epi16")
+            .allowlist_function("_mm_unpackhi_epi16")
+            .allowlist_function("_mm_packs_epi32")
+            .allowlist_function("_mm_adds_epu16")
+            .allowlist_function("_mm_cmpgt_epi16")
+            .allowlist_function("_mm_blendv_epi8")
+            .allowlist_function("_mm_min_epi16")
+            .allowlist_function("_mm_max_epi16")
+            .allowlist_function("_mm_subs_epi16")
+            .allowlist_function("_mm_adds_epi16")
+            .allowlist_function("_mm_xor_si128")
+            .allowlist_function("_mm_cmplt_epi16")
+            .allowlist_function("_mm_subs_epu16")
+            .allowlist_function("_mm_set1_epi32")
+            .blocklist_type("__m128i")
+            .blocklist_type("int64x2_t")
+            .wrap_static_fns(true)
+            .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+            .generate()
+            .expect("Unable to generate bindings");
+
+        simd_bindings
+            .write_to_file(out_path.join("simd_bindings.rs"))
+            .expect("Couldn't write bindings!");
+
+        simd_build.file(std::env::temp_dir().join("bindgen").join("extern.c"));
+        simd_build.include(".");
+        simd_build.compile("simd");
+    }
+
+    let git_output = std::process::Command::new("git")
+        .args(["rev-parse", "HEAD"])
+        .output()
+        .unwrap();
+
+    let git_hash = String::from_utf8(git_output.stdout).unwrap();
+    println!("cargo:rustc-env=GIT_HASH={}", git_hash);
+
+    println!("cargo:rustc-env=N64_STACK_SIZE={}", 8 * 1024 * 1024);
 }

parallel-rdp/interface.cpp

@@ -3,6 +3,7 @@
 #include "rdp_device.hpp"
 #include "interface.hpp"
 #include "spirv.hpp"
+#include <SDL3/SDL_vulkan.h>
 
 using namespace Vulkan;
 
@@ -51,6 +52,7 @@ enum vi_registers
 };
 
 static bool fullscreen;
+static bool integer_scaling;
 static SDL_Window *window;
 static RDP::CommandProcessor *processor;
 static SDL_WSIPlatform *wsi_platform;
@@ -58,12 +60,25 @@ static WSI *wsi;
 static uint32_t cmd_data[0x00040000 >> 2];
 static int cmd_cur;
 static int cmd_ptr;
-static bool emu_running;
-static uint64_t rdp_sync_signal;
+static CALL_BACK callback;
 static GFX_INFO gfx_info;
+static uint32_t region;
 
-static uint64_t last_frame_counter;
-static uint64_t frame_counter;
+typedef struct
+{
+	uint32_t depthbuffer_address;
+	uint32_t framebuffer_address;
+	uint32_t framebuffer_pixel_size;
+	uint32_t framebuffer_width;
+	uint32_t framebuffer_height;
+	uint32_t framebuffer_size;
+	uint32_t depthbuffer_size;
+	uint8_t depthbuffer_enabled;
+} FrameBufferInfo;
+
+static uint8_t *rdram_dirty;
+static uint64_t sync_signal;
+static FrameBufferInfo frame_buffer_info;
 
 static const unsigned cmd_len_lut[64] = {
 	1,
@@ -132,13 +147,91 @@ static const unsigned cmd_len_lut[64] = {
 	1,
 };
 
-void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen)
+bool sdl_event_filter(void *userdata, SDL_Event *event)
+{
+	if (event->type == SDL_EVENT_WINDOW_CLOSE_REQUESTED)
+	{
+		callback.emu_running = false;
+	}
+	else if (event->type == SDL_EVENT_WINDOW_RESIZED && callback.emu_running)
+	{
+		wsi_platform->do_resize();
+	}
+	else if (event->type == SDL_EVENT_KEY_DOWN && !event->key.repeat)
+	{
+		switch (event->key.scancode)
+		{
+		case SDL_SCANCODE_RETURN:
+			if (event->key.mod & SDL_KMOD_ALT)
+			{
+				fullscreen = !fullscreen;
+				SDL_SetWindowFullscreen(window, fullscreen);
+			}
+			break;
+		case SDL_SCANCODE_F:
+			if (event->key.mod & SDL_KMOD_ALT)
+			{
+				callback.enable_speedlimiter = !callback.enable_speedlimiter;
+			}
+			break;
+		case SDL_SCANCODE_ESCAPE:
+			if (fullscreen)
+				callback.emu_running = false;
+			break;
+		case SDL_SCANCODE_F5:
+			callback.save_state = true;
+			break;
+		case SDL_SCANCODE_F7:
+			callback.load_state = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	return 0;
+}
+
+void rdp_new_processor(GFX_INFO _gfx_info, uint32_t upscale)
+{
+	memset(&frame_buffer_info, 0, sizeof(FrameBufferInfo));
+	sync_signal = 0;
+	memset(rdram_dirty, 0, gfx_info.RDRAM_SIZE / 8);
+
+	gfx_info = _gfx_info;
+	if (processor)
+	{
+		delete processor;
+	}
+	RDP::CommandProcessorFlags flags = 0;
+
+	if (upscale == 2)
+	{
+		flags |= RDP::COMMAND_PROCESSOR_FLAG_SUPER_SAMPLED_DITHER_BIT;
+		flags |= RDP::COMMAND_PROCESSOR_FLAG_UPSCALING_2X_BIT;
+	}
+	else if (upscale == 4)
+	{
+		flags |= RDP::COMMAND_PROCESSOR_FLAG_SUPER_SAMPLED_DITHER_BIT;
+		flags |= RDP::COMMAND_PROCESSOR_FLAG_UPSCALING_4X_BIT;
+	}
+
+	processor = new RDP::CommandProcessor(wsi->get_device(), gfx_info.RDRAM, 0, gfx_info.RDRAM_SIZE, gfx_info.RDRAM_SIZE / 2, flags);
+}
+
+void rdp_init(void *_window, GFX_INFO _gfx_info, uint32_t _upscale, bool _integer_scaling, bool _fullscreen)
 {
 	window = (SDL_Window *)_window;
-	SDL_SetEventFilter(sdl_event_filter, nullptr);
+	bool result = SDL_AddEventWatch(sdl_event_filter, nullptr);
+	if (!result)
+	{
+		printf("Could not add event watch.\n");
+		return;
+	}
 
 	gfx_info = _gfx_info;
 	fullscreen = _fullscreen;
+	integer_scaling = _integer_scaling;
 	bool window_vsync = 0;
 	wsi = new WSI;
 	wsi_platform = new SDL_WSIPlatform;
@@ -147,7 +240,7 @@ void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen)
 	wsi->set_present_mode(window_vsync ? PresentMode::SyncToVBlank : PresentMode::UnlockedMaybeTear);
 	wsi->set_backbuffer_srgb(false);
 	Context::SystemHandles handles = {};
-	if (!::Vulkan::Context::init_loader(nullptr))
+	if (!::Vulkan::Context::init_loader((PFN_vkGetInstanceProcAddr)SDL_Vulkan_GetVkGetInstanceProcAddr()))
 	{
 		rdp_close();
 	}
@@ -155,8 +248,9 @@ void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen)
 	{
 		rdp_close();
 	}
-	RDP::CommandProcessorFlags flags = 0;
-	processor = new RDP::CommandProcessor(wsi->get_device(), gfx_info.RDRAM, 0, gfx_info.RDRAM_SIZE, gfx_info.RDRAM_SIZE / 2, flags);
+
+	rdram_dirty = (uint8_t *)malloc(gfx_info.RDRAM_SIZE / 8);
+	rdp_new_processor(gfx_info, _upscale);
 
 	if (!processor->device_is_supported())
 	{
@@ -167,13 +261,18 @@ void rdp_init(void *_window, GFX_INFO _gfx_info, bool _fullscreen)
 	}
 	wsi->begin_frame();
 
-	emu_running = true;
-	last_frame_counter = 0;
-	frame_counter = 0;
+	callback.emu_running = true;
+	callback.enable_speedlimiter = true;
 }
 
 void rdp_close()
 {
+	if (rdram_dirty)
+	{
+		free(rdram_dirty);
+		rdram_dirty = nullptr;
+	}
+
 	wsi->end_frame();
 
 	if (processor)
@@ -193,72 +292,52 @@ void rdp_close()
 	}
 }
 
-int sdl_event_filter(void *userdata, SDL_Event *event)
-{
-	if (event->type == SDL_WINDOWEVENT)
-	{
-		switch (event->window.event)
-		{
-		case SDL_WINDOWEVENT_CLOSE:
-			emu_running = false;
-			break;
-		case SDL_WINDOWEVENT_RESIZED:
-			wsi_platform->do_resize();
-			break;
-		default:
-			break;
-		}
-	}
-	else if (fullscreen && event->type == SDL_KEYDOWN)
-	{
-		switch (event->key.keysym.scancode)
-		{
-		case SDL_SCANCODE_ESCAPE:
-			emu_running = false;
-			break;
-		default:
-			break;
-		}
-	}
-
-	return 0;
-}
-
 static void calculate_viewport(float *x, float *y, float *width, float *height)
 {
-	bool window_widescreen = false;
-	int32_t display_width = (window_widescreen ? 854 : 640);
-	int32_t display_height = 480;
+	const int32_t display_width = gfx_info.PAL ? 384 : 320;
+	const int32_t display_height = gfx_info.PAL ? 288 : 240;
 
 	int w, h;
 	SDL_GetWindowSize(window, &w, &h);
 
-	*width = w;
-	*height = h;
-	*x = 0;
-	*y = 0;
-	int32_t hw = display_height * *width;
-	int32_t wh = display_width * *height;
+	if (integer_scaling)
+	{
+		// Integer scaling path
+		int scale_x = w / display_width;
+		int scale_y = h / display_height;
+		int scale = (scale_x < scale_y) ? scale_x : scale_y;
+		if (scale < 1)
+			scale = 1;
 
-	// add letterboxes or pillarboxes if the window has a different aspect ratio
-	// than the current display mode
-	if (hw > wh)
-	{
-		int32_t w_max = wh / display_height;
-		*x += (*width - w_max) / 2;
-		*width = w_max;
+		// Calculate scaled dimensions
+		int scaled_width = display_width * scale;
+		int scaled_height = display_height * scale;
+
+		*width = scaled_width;
+		*height = scaled_height;
 	}
-	else if (hw < wh)
+	else
 	{
-		int32_t h_max = hw / display_width;
-		*y += (*height - h_max) / 2;
-		*height = h_max;
+		// Regular scaling path - maintain aspect ratio
+		float scale_x = w / (float)display_width;
+		float scale_y = h / (float)display_height;
+		float scale = (scale_x < scale_y) ? scale_x : scale_y;
+
+		*width = display_width * scale;
+		*height = display_height * scale;
 	}
+
+	// Center the viewport
+	*x = (w - *width) / 2.0f;
+	*y = (h - *height) / 2.0f;
 }
 
 static void render_frame(Vulkan::Device &device)
 {
 	RDP::ScanoutOptions options = {};
+	options.persist_frame_on_invalid_input = true;
+	options.blend_previous_frame = true;
+	options.upscale_deinterlacing = false;
 	Vulkan::ImageHandle image = processor->scanout(options);
 
 	// Normally reflection is automated.
@@ -309,53 +388,55 @@ void rdp_set_vi_register(uint32_t reg, uint32_t value)
 	processor->set_vi_register(RDP::VIRegister(reg), value);
 }
 
-bool rdp_update_screen()
+void rdp_update_screen()
 {
 	auto &device = wsi->get_device();
 	render_frame(device);
 	wsi->end_frame();
 	wsi->begin_frame();
-	frame_counter++;
-	return emu_running;
 }
 
-static uint32_t viCalculateHorizonalWidth(uint32_t hstart, uint32_t xscale, uint32_t width)
+CALL_BACK rdp_check_callback()
 {
-	if (xscale == 0)
-		return 320;
+	CALL_BACK return_value = callback;
+	callback.save_state = false;
+	callback.load_state = false;
+	return return_value;
+}
 
-	uint32_t start = ((hstart & 0x03FF0000) >> 16) & 0x3FF;
-	uint32_t end = (hstart & 0x3FF);
-	uint32_t delta;
-	if (end > start)
-		delta = end - start;
-	else
-		delta = start - end;
-	uint32_t scale = (xscale & 0xFFF);
-
-	if (delta == 0)
+void rdp_check_framebuffers(uint32_t address)
+{
+	if (sync_signal && rdram_dirty[address >> 3])
 	{
-		delta = width;
+		processor->wait_for_timeline(sync_signal);
+		memset(rdram_dirty, 0, gfx_info.RDRAM_SIZE / 8);
+		sync_signal = 0;
 	}
-
-	return (delta * scale) / 0x400;
 }
 
-static uint32_t viCalculateVerticalHeight(uint32_t vstart, uint32_t yscale)
+void rdp_full_sync()
 {
-	if (yscale == 0)
-		return 240;
+	processor->wait_for_timeline(processor->signal_timeline());
+}
 
-	uint32_t start = ((vstart & 0x03FF0000) >> 16) & 0x3FF;
-	uint32_t end = (vstart & 0x3FF);
-	uint32_t delta;
-	if (end > start)
-		delta = end - start;
-	else
-		delta = start - end;
-	uint32_t scale = (yscale & 0xFFF);
-
-	return (delta * scale) / 0x800;
+void calculate_buffer_size()
+{
+	switch (frame_buffer_info.framebuffer_pixel_size)
+	{
+	case 0:
+		frame_buffer_info.framebuffer_size = (frame_buffer_info.framebuffer_width * frame_buffer_info.framebuffer_height / 2) >> 3;
+		break;
+	case 1:
+		frame_buffer_info.framebuffer_size = (frame_buffer_info.framebuffer_width * frame_buffer_info.framebuffer_height) >> 3;
+		break;
+	case 2:
+		frame_buffer_info.framebuffer_size = (frame_buffer_info.framebuffer_width * frame_buffer_info.framebuffer_height * 2) >> 3;
+		break;
+	case 3:
+		frame_buffer_info.framebuffer_size = (frame_buffer_info.framebuffer_width * frame_buffer_info.framebuffer_height * 4) >> 3;
+		break;
+	}
+	frame_buffer_info.depthbuffer_size = (frame_buffer_info.framebuffer_width * frame_buffer_info.framebuffer_height * 2) >> 3;
 }
 
 uint64_t rdp_process_commands()
@@ -372,16 +453,14 @@ uint64_t rdp_process_commands()
 	if ((cmd_ptr + length) & ~(0x0003FFFF >> 3))
 		return interrupt_timer;
 
-	*gfx_info.DPC_STATUS_REG |= DP_STATUS_PIPE_BUSY | DP_STATUS_START_GCLK;
-
 	uint32_t offset = DP_CURRENT;
 	if (*gfx_info.DPC_STATUS_REG & DP_STATUS_XBUS_DMA)
 	{
 		do
 		{
 			offset &= 0xFF8;
-			cmd_data[2 * cmd_ptr + 0] = SDL_SwapBE32(*reinterpret_cast<const uint32_t *>(gfx_info.DMEM + offset));
-			cmd_data[2 * cmd_ptr + 1] = SDL_SwapBE32(*reinterpret_cast<const uint32_t *>(gfx_info.DMEM + offset + 4));
+			cmd_data[2 * cmd_ptr + 0] = SDL_Swap32BE(*reinterpret_cast<const uint32_t *>(gfx_info.DMEM + offset));
+			cmd_data[2 * cmd_ptr + 1] = SDL_Swap32BE(*reinterpret_cast<const uint32_t *>(gfx_info.DMEM + offset + 4));
 			offset += sizeof(uint64_t);
 			cmd_ptr++;
 		} while (--length > 0);
@@ -408,6 +487,7 @@ uint64_t rdp_process_commands()
 	while (cmd_cur - cmd_ptr < 0)
 	{
 		uint32_t w1 = cmd_data[2 * cmd_cur];
+		uint32_t w2 = cmd_data[2 * cmd_cur + 1];
 		uint32_t command = (w1 >> 24) & 63;
 		int cmd_length = cmd_len_lut[command];
 
@@ -420,31 +500,58 @@ uint64_t rdp_process_commands()
 		if (command >= 8)
 			processor->enqueue_command(cmd_length * 2, &cmd_data[2 * cmd_cur]);
 
-		if (RDP::Op(command) == RDP::Op::SyncFull)
+		if ((RDP::Op(command) >= RDP::Op::FillTriangle && RDP::Op(command) <= RDP::Op::ShadeTextureZBufferTriangle) ||
+			RDP::Op(command) == RDP::Op::TextureRectangle ||
+			RDP::Op(command) == RDP::Op::TextureRectangleFlip ||
+			RDP::Op(command) == RDP::Op::FillRectangle)
 		{
-			if (frame_counter != last_frame_counter) // Only sync once per frame
+			if (!rdram_dirty[frame_buffer_info.framebuffer_address])
 			{
-				rdp_sync_signal = processor->signal_timeline();
-				last_frame_counter = frame_counter;
-			}
-			else
-			{
-				rdp_sync_signal = 0;
+				for (uint32_t i = frame_buffer_info.framebuffer_address; i < frame_buffer_info.framebuffer_address + frame_buffer_info.framebuffer_size; ++i)
+				{
+					rdram_dirty[i] = 1;
+				}
 			}
 
-			uint32_t width = viCalculateHorizonalWidth(*gfx_info.VI_H_START_REG, *gfx_info.VI_X_SCALE_REG, *gfx_info.VI_WIDTH_REG);
-			if (width == 0)
+			if (frame_buffer_info.depthbuffer_enabled && !rdram_dirty[frame_buffer_info.depthbuffer_address])
 			{
-				width = 320;
+				for (uint32_t i = frame_buffer_info.depthbuffer_address; i < frame_buffer_info.depthbuffer_address + frame_buffer_info.depthbuffer_size; ++i)
+				{
+					rdram_dirty[i] = 1;
+				}
 			}
-			uint32_t height = viCalculateVerticalHeight(*gfx_info.VI_V_START_REG, *gfx_info.VI_Y_SCALE_REG);
-			if (height == 0)
-			{
-				height = 240;
-			}
-			interrupt_timer = width * height * 4;
-
-			*gfx_info.DPC_STATUS_REG &= ~(DP_STATUS_PIPE_BUSY | DP_STATUS_START_GCLK);
+		}
+		else if (RDP::Op(command) == RDP::Op::SetOtherModes)
+		{
+			frame_buffer_info.depthbuffer_enabled = (w2 >> 5) & 1;
+		}
+		else if (RDP::Op(command) == RDP::Op::SetColorImage)
+		{
+			frame_buffer_info.framebuffer_address = (w2 & 0x00FFFFFF) >> 3;
+			frame_buffer_info.framebuffer_pixel_size = (w1 >> 19) & 0x3;
+			frame_buffer_info.framebuffer_width = (w1 & 0x3FF) + 1;
+			calculate_buffer_size();
+		}
+		else if (RDP::Op(command) == RDP::Op::SetMaskImage)
+		{
+			frame_buffer_info.depthbuffer_address = (w2 & 0x00FFFFFF) >> 3;
+		}
+		else if (RDP::Op(command) == RDP::Op::SetScissor)
+		{
+			uint32_t upper_left_x = ((w1 >> 12) & 0xFFF) >> 2;
+			uint32_t upper_left_y = (w1 & 0xFFF) >> 2;
+			uint32_t lower_right_x = ((w2 >> 12) & 0xFFF) >> 2;
+			uint32_t lower_right_y = (w2 & 0xFFF) >> 2;
+			region = (lower_right_x - upper_left_x) * (lower_right_y - upper_left_y);
+			frame_buffer_info.framebuffer_height = lower_right_y;
+			calculate_buffer_size();
+		}
+		else if (RDP::Op(command) == RDP::Op::SyncFull)
+		{
+			sync_signal = processor->signal_timeline();
+			interrupt_timer = region;
+			if (interrupt_timer == 0)
+				interrupt_timer = 5000;
 		}
 
 		cmd_cur += cmd_length;
@@ -453,15 +560,6 @@ uint64_t rdp_process_commands()
 	cmd_ptr = 0;
 	cmd_cur = 0;
 	*gfx_info.DPC_CURRENT_REG = *gfx_info.DPC_END_REG;
-	*gfx_info.DPC_STATUS_REG |= DP_STATUS_CBUF_READY;
 
 	return interrupt_timer;
 }
-
-void rdp_full_sync()
-{
-	if (rdp_sync_signal)
-	{
-		processor->wait_for_timeline(rdp_sync_signal);
-	}
-}

parallel-rdp/interface.hpp

@@ -16,20 +16,26 @@ extern "C"
 		uint32_t *DPC_START_REG;
 		uint32_t *DPC_END_REG;
 		uint32_t *DPC_STATUS_REG;
-		uint32_t *VI_H_START_REG;
-		uint32_t *VI_V_START_REG;
-		uint32_t *VI_X_SCALE_REG;
-		uint32_t *VI_Y_SCALE_REG;
-		uint32_t *VI_WIDTH_REG;
+		bool PAL;
 	} GFX_INFO;
 
-	void rdp_init(void *_window, GFX_INFO _gfx_info, bool fullscreen);
+	typedef struct
+	{
+		bool emu_running;
+		bool save_state;
+		bool load_state;
+		bool enable_speedlimiter;
+	} CALL_BACK;
+
+	void rdp_init(void *_window, GFX_INFO _gfx_info, uint32_t _upscale, bool _integer_scaling, bool _fullscreen);
 	void rdp_close();
 	void rdp_set_vi_register(uint32_t reg, uint32_t value);
-	bool rdp_update_screen();
+	void rdp_update_screen();
+	CALL_BACK rdp_check_callback();
 	uint64_t rdp_process_commands();
+	void rdp_new_processor(GFX_INFO _gfx_info, uint32_t _upscale);
+	void rdp_check_framebuffers(uint32_t address);
 	void rdp_full_sync();
-	int sdl_event_filter(void *userdata, SDL_Event *event);
 
 #ifdef __cplusplus
 }

parallel-rdp/wsi_platform.cpp

@@ -1,11 +1,11 @@
 #include "wsi_platform.hpp"
-#include <SDL_vulkan.h>
+#include <SDL3/SDL_vulkan.h>
 
 VkSurfaceKHR SDL_WSIPlatform::create_surface(VkInstance instance, VkPhysicalDevice gpu)
 {
 	VkSurfaceKHR surface = nullptr;
-	SDL_bool result = SDL_Vulkan_CreateSurface(window, instance, &surface);
-	if (result != SDL_TRUE)
+	bool result = SDL_Vulkan_CreateSurface(window, instance, NULL, &surface);
+	if (result != true)
 	{
 		printf("Error creating surface\n");
 	}
@@ -14,18 +14,23 @@ VkSurfaceKHR SDL_WSIPlatform::create_surface(VkInstance instance, VkPhysicalDevi
 
 void SDL_WSIPlatform::destroy_surface(VkInstance instance, VkSurfaceKHR surface)
 {
+	SDL_Vulkan_DestroySurface(instance, surface, NULL);
 }
 
 std::vector<const char *> SDL_WSIPlatform::get_instance_extensions()
 {
 
 	unsigned int extensionCount = 0;
-	SDL_Vulkan_GetInstanceExtensions(window, &extensionCount, nullptr);
-	std::vector<const char *> extensionNames(extensionCount);
-	SDL_bool result = SDL_Vulkan_GetInstanceExtensions(window, &extensionCount, extensionNames.data());
-	if (result != SDL_TRUE)
+	char const *const *extensions = SDL_Vulkan_GetInstanceExtensions(&extensionCount);
+	if (extensions == NULL)
 	{
-		printf("Error creating surface\n");
+		printf("Error getting instance extensions\n");
+	}
+
+	std::vector<const char *> extensionNames;
+	for (int i = 0; i < extensionCount; ++i)
+	{
+		extensionNames.push_back(extensions[i]);
 	}
 	return extensionNames;
 }
@@ -56,7 +61,6 @@ void SDL_WSIPlatform::poll_input()
 
 void SDL_WSIPlatform::poll_input_async(Granite::InputTrackerHandler *handler)
 {
-	SDL_PumpEvents();
 }
 
 void SDL_WSIPlatform::set_window(SDL_Window *_window)

parallel-rdp/wsi_platform.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "wsi.hpp"
-#include <SDL.h>
+#include <SDL3/SDL.h>
 
 class SDL_WSIPlatform : public Vulkan::WSIPlatform
 {

src/compat/aarch64.c

@@ -0,0 +1,197 @@
+#include "src/compat/sse2neon/v1.8.0/sse2neon.h"
+
+// Static wrappers
+
+__m128i _mm_srli_epi16__extern(__m128i __a, int __imm8) { return _mm_srli_epi16(__a, __imm8); }
+
+__m128i _mm_insert_epi8__extern(__m128i __a, int __i, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_insert_epi8(__a, __i, 0);
+    case 1:
+        return _mm_insert_epi8(__a, __i, 1);
+    case 2:
+        return _mm_insert_epi8(__a, __i, 2);
+    case 3:
+        return _mm_insert_epi8(__a, __i, 3);
+    case 4:
+        return _mm_insert_epi8(__a, __i, 4);
+    case 5:
+        return _mm_insert_epi8(__a, __i, 5);
+    case 6:
+        return _mm_insert_epi8(__a, __i, 6);
+    case 7:
+        return _mm_insert_epi8(__a, __i, 7);
+    case 8:
+        return _mm_insert_epi8(__a, __i, 8);
+    case 9:
+        return _mm_insert_epi8(__a, __i, 9);
+    case 10:
+        return _mm_insert_epi8(__a, __i, 10);
+    case 11:
+        return _mm_insert_epi8(__a, __i, 11);
+    case 12:
+        return _mm_insert_epi8(__a, __i, 12);
+    case 13:
+        return _mm_insert_epi8(__a, __i, 13);
+    case 14:
+        return _mm_insert_epi8(__a, __i, 14);
+    case 15:
+        return _mm_insert_epi8(__a, __i, 15);
+    default:
+        abort();
+    }
+}
+
+int _mm_extract_epi8__extern(__m128i __a, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_extract_epi8(__a, 0);
+    case 1:
+        return _mm_extract_epi8(__a, 1);
+    case 2:
+        return _mm_extract_epi8(__a, 2);
+    case 3:
+        return _mm_extract_epi8(__a, 3);
+    case 4:
+        return _mm_extract_epi8(__a, 4);
+    case 5:
+        return _mm_extract_epi8(__a, 5);
+    case 6:
+        return _mm_extract_epi8(__a, 6);
+    case 7:
+        return _mm_extract_epi8(__a, 7);
+    case 8:
+        return _mm_extract_epi8(__a, 8);
+    case 9:
+        return _mm_extract_epi8(__a, 9);
+    case 10:
+        return _mm_extract_epi8(__a, 10);
+    case 11:
+        return _mm_extract_epi8(__a, 11);
+    case 12:
+        return _mm_extract_epi8(__a, 12);
+    case 13:
+        return _mm_extract_epi8(__a, 13);
+    case 14:
+        return _mm_extract_epi8(__a, 14);
+    case 15:
+        return _mm_extract_epi8(__a, 15);
+    default:
+        abort();
+    }
+}
+
+__m128i _mm_insert_epi16__extern(__m128i __a, int __i, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_insert_epi16(__a, __i, 0);
+    case 1:
+        return _mm_insert_epi16(__a, __i, 1);
+    case 2:
+        return _mm_insert_epi16(__a, __i, 2);
+    case 3:
+        return _mm_insert_epi16(__a, __i, 3);
+    case 4:
+        return _mm_insert_epi16(__a, __i, 4);
+    case 5:
+        return _mm_insert_epi16(__a, __i, 5);
+    case 6:
+        return _mm_insert_epi16(__a, __i, 6);
+    case 7:
+        return _mm_insert_epi16(__a, __i, 7);
+    default:
+        abort();
+    }
+}
+
+int _mm_extract_epi16__extern(__m128i __a, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_extract_epi16(__a, 0);
+    case 1:
+        return _mm_extract_epi16(__a, 1);
+    case 2:
+        return _mm_extract_epi16(__a, 2);
+    case 3:
+        return _mm_extract_epi16(__a, 3);
+    case 4:
+        return _mm_extract_epi16(__a, 4);
+    case 5:
+        return _mm_extract_epi16(__a, 5);
+    case 6:
+        return _mm_extract_epi16(__a, 6);
+    case 7:
+        return _mm_extract_epi16(__a, 7);
+    default:
+        abort();
+    }
+}
+
+__m128i _mm_insert_epi32__extern(__m128i __a, int __i, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_insert_epi32(__a, __i, 0);
+    case 1:
+        return _mm_insert_epi32(__a, __i, 1);
+    case 2:
+        return _mm_insert_epi32(__a, __i, 2);
+    case 3:
+        return _mm_insert_epi32(__a, __i, 3);
+    default:
+        abort();
+    }
+}
+
+int _mm_extract_epi32__extern(__m128i __a, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_extract_epi32(__a, 0);
+    case 1:
+        return _mm_extract_epi32(__a, 1);
+    case 2:
+        return _mm_extract_epi32(__a, 2);
+    case 3:
+        return _mm_extract_epi32(__a, 3);
+    default:
+        abort();
+    }
+}
+
+__m128i _mm_insert_epi64__extern(__m128i __a, int64_t __i, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_insert_epi64(__a, __i, 0);
+    case 1:
+        return _mm_insert_epi64(__a, __i, 1);
+    default:
+        abort();
+    }
+}
+
+int64_t _mm_extract_epi64__extern(__m128i __a, const int __imm8)
+{
+    switch (__imm8)
+    {
+    case 0:
+        return _mm_extract_epi64(__a, 0);
+    case 1:
+        return _mm_extract_epi64(__a, 1);
+    default:
+        abort();
+    }
+}

src/compat/aarch64.rs

@@ -0,0 +1,47 @@
+unsafe extern "C" {
+    #[link_name = "_mm_srli_epi16__extern"]
+    fn _mm_srli_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> __m128i;
+
+    #[link_name = "_mm_insert_epi8__extern"]
+    fn _mm_insert_epi8(
+        __a: __m128i,
+        __i: ::std::os::raw::c_int,
+        __imm8: ::std::os::raw::c_int,
+    ) -> __m128i;
+
+    #[link_name = "_mm_extract_epi8__extern"]
+    fn _mm_extract_epi8(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+
+    #[link_name = "_mm_insert_epi16__extern"]
+    fn _mm_insert_epi16(
+        __a: __m128i,
+        __i: ::std::os::raw::c_int,
+        __imm8: ::std::os::raw::c_int,
+    ) -> __m128i;
+
+    #[link_name = "_mm_extract_epi16__extern"]
+    fn _mm_extract_epi16(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+
+    #[link_name = "_mm_insert_epi32__extern"]
+    fn _mm_insert_epi32(
+        __a: __m128i,
+        __i: ::std::os::raw::c_int,
+        __imm8: ::std::os::raw::c_int,
+    ) -> __m128i;
+
+    #[link_name = "_mm_extract_epi32__extern"]
+    fn _mm_extract_epi32(__a: __m128i, __imm8: ::std::os::raw::c_int) -> ::std::os::raw::c_int;
+
+    #[link_name = "_mm_insert_epi64__extern"]
+    fn _mm_insert_epi64(
+        __a: __m128i,
+        __i: ::std::os::raw::c_longlong,
+        __imm8: ::std::os::raw::c_int,
+    ) -> __m128i;
+
+    #[link_name = "_mm_extract_epi64__extern"]
+    fn _mm_extract_epi64(
+        __a: __m128i,
+        __imm8: ::std::os::raw::c_int,
+    ) -> ::std::os::raw::c_longlong;
+}

src/device.rs

@@ -1,11 +1,21 @@
-use crate::ui;
-use std::fs;
-use std::io::Read;
+#![allow(non_camel_case_types)]
+#![allow(improper_ctypes)]
+
+#[cfg(target_arch = "aarch64")]
+#[derive(Copy, Clone)]
+#[allow(dead_code)]
+pub struct __m128i(std::arch::aarch64::int64x2_t);
+#[cfg(target_arch = "aarch64")]
+include!(concat!(env!("OUT_DIR"), "/simd_bindings.rs"));
+#[cfg(target_arch = "x86_64")]
+use std::arch::x86_64::*;
+
+use crate::{netplay, ui};
+use std::{collections::HashMap, fs, io::Read};
 
 pub mod ai;
 pub mod cache;
 pub mod cart;
-pub mod cart_rom;
 pub mod controller;
 pub mod cop0;
 pub mod cop1;
@@ -17,7 +27,6 @@ pub mod exceptions;
 pub mod fpu_instructions;
 pub mod is_viewer;
 pub mod memory;
-pub mod mempak;
 pub mod mi;
 pub mod pi;
 pub mod pif;
@@ -29,39 +38,41 @@ pub mod rsp_interface;
 pub mod rsp_su_instructions;
 pub mod rsp_vu_instructions;
 pub mod si;
-pub mod sram;
 pub mod tlb;
 pub mod unmapped;
 pub mod vi;
 
-pub fn run_game(file_path: &std::path::Path, device: &mut Device, fullscreen: bool) {
-    let rom_contents = get_rom_contents(file_path);
-
-    cart_rom::init(device, rom_contents); // cart needs to come before rdram
+pub fn run_game(rom_contents: Vec<u8>, device: &mut Device) {
+    cart::rom::init(device, rom_contents); // cart needs to come before rdram
 
     // rdram pointer is shared with parallel-rdp
     rdram::init(device);
 
-    ui::audio::init(&mut device.ui, 33600);
-    ui::video::init(device, fullscreen);
+    ui::audio::init(&mut device.ui, device.ai.freq);
+    ui::video::init(device);
     ui::input::init(&mut device.ui);
 
     mi::init(device);
     pif::init(device);
+    if device.ui.config.input.emulate_vru {
+        controller::vru::init(device);
+    }
     memory::init(device);
+    cache::init(device);
     rsp_interface::init(device);
     rdp::init(device);
     vi::init(device);
     cpu::init(device);
 
-    ui::storage::init(&mut device.ui);
-    ui::storage::load_saves(&mut device.ui);
-    cart_rom::load_rom_save(device);
+    ui::storage::init(&mut device.ui, &device.cart.rom);
+    ui::storage::load_saves(&mut device.ui, &mut device.netplay);
 
     cpu::run(device);
 
-    ui::video::close();
-    ui::storage::write_saves(&device.ui);
+    ui::input::close(&mut device.ui);
+    ui::video::close(&device.ui);
+    ui::audio::close(&mut device.ui);
+    ui::storage::write_saves(&device.ui, &device.netplay);
 }
 
 fn swap_rom(contents: Vec<u8>) -> Vec<u8> {
@@ -86,11 +97,12 @@ fn swap_rom(contents: Vec<u8>) -> Vec<u8> {
         }
         return data;
     } else {
-        panic!("unknown rom format")
+        let data: Vec<u8> = vec![];
+        data
     }
 }
 
-fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
+pub fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
     let mut contents = vec![];
     if file_path.extension().unwrap().eq_ignore_ascii_case("zip") {
         let zip_file = fs::File::open(file_path).unwrap();
@@ -140,23 +152,34 @@ fn get_rom_contents(file_path: &std::path::Path) -> Vec<u8> {
     swap_rom(contents)
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Device {
+    #[serde(skip)]
+    pub netplay: Option<netplay::Netplay>,
+    #[serde(skip, default = "ui::Ui::default")]
     pub ui: ui::Ui,
     byte_swap: usize,
-    cpu: cpu::Cpu,
-    pif: pif::Pif,
-    cart: cart_rom::Cart,
-    memory: memory::Memory,
+    pub save_state: bool,
+    pub load_state: bool,
+    pub cpu: cpu::Cpu,
+    pub pif: pif::Pif,
+    pub cart: cart::Cart,
+    pub memory: memory::Memory,
     pub rsp: rsp_interface::Rsp,
     pub rdp: rdp::Rdp,
     pub rdram: rdram::Rdram,
-    mi: mi::Mi,
-    pi: pi::Pi,
+    pub mi: mi::Mi,
+    pub pi: pi::Pi,
     pub vi: vi::Vi,
-    ai: ai::Ai,
-    si: si::Si,
-    ri: ri::Ri,
-    flashram: sram::Flashram,
+    pub ai: ai::Ai,
+    pub si: si::Si,
+    pub ri: ri::Ri,
+    pub vru: controller::vru::Vru,
+    pub vru_window: controller::vru::VruWindow,
+}
+
+pub fn zero_m128i() -> __m128i {
+    unsafe { _mm_setzero_si128() }
 }
 
 impl Device {
@@ -169,13 +192,18 @@ impl Device {
             byte_swap = 3;
         }
         Device {
+            netplay: None,
             ui: ui::Ui::new(),
             byte_swap,
+            save_state: false,
+            load_state: false,
             cpu: cpu::Cpu {
                 cop0: cop0::Cop0 {
                     regs: [0; cop0::COP0_REGS_COUNT as usize],
                     reg_write_masks: [0; cop0::COP0_REGS_COUNT as usize],
                     reg_latch: 0,
+                    is_event: false,
+                    pending_compare_interrupt: false,
                     instrs: [cop0::reserved; 32],
                     instrs2: [cop0::reserved; 32],
                     tlb_lut_w: vec![
@@ -217,7 +245,8 @@ impl Device {
                 cop1: cop1::Cop1 {
                     fcr0: 0,
                     fcr31: 0,
-                    flush_mode: 0,
+                    //#[cfg(target_arch = "x86_64")]
+                    //flush_mode: 0,
                     fgr32: [[0; 4]; 32],
                     fgr64: [[0; 8]; 32],
                     instrs: [cop1::reserved; 32],
@@ -249,10 +278,9 @@ impl Device {
                 events: [events::Event {
                     enabled: false,
                     count: u64::MAX,
-                    handler: events::dummy_event,
-                }; events::EventType::Count as usize],
+                }; events::EVENT_TYPE_COUNT],
                 next_event_count: u64::MAX,
-                next_event: 0,
+                next_event: events::EVENT_TYPE_NONE,
             },
             pif: pif::Pif {
                 rom: [0; 1984],
@@ -264,17 +292,32 @@ impl Device {
                     rx_buf: None,
                     process: None,
                     pak_handler: None,
+                    change_pak: controller::PakType::None,
                 }; 5],
             },
-            cart: cart_rom::Cart {
+            cart: cart::Cart {
                 rom: Vec::new(),
                 is_viewer_buffer: [0; 0xFFFF],
                 pal: false,
                 latch: 0,
                 cic_seed: 0,
-                cic_type: cart_rom::CicType::CicNus6102,
+                cic_type: cart::CicType::CicNus6102,
                 rdram_size_offset: 0,
                 rtc: cart::AfRtc { control: 0x0200 },
+                sc64: cart::sc64::Sc64 {
+                    regs: [0; cart::sc64::SC64_REGS_COUNT as usize],
+                    regs_locked: true,
+                    cfg: [0; cart::sc64::SC64_CFG_COUNT as usize],
+                    sector: 0,
+                    buffer: [0; 8192],
+                },
+                flashram: cart::sram::Flashram {
+                    status: 0,
+                    erase_page: 0,
+                    page_buf: [0xff; 128],
+                    silicon_id: [cart::sram::FLASHRAM_TYPE_ID, cart::sram::MX29L1100_ID],
+                    mode: cart::sram::FlashramMode::ReadArray,
+                },
             },
             memory: memory::Memory {
                 fast_read: [unmapped::read_mem; 0x2000],
@@ -298,6 +341,7 @@ impl Device {
             rdram: rdram::Rdram {
                 mem: vec![],
                 size: 0x800000,
+                regs: [[0; rdram::RDRAM_REGS_COUNT as usize]; 4],
             },
             rsp: rsp_interface::Rsp {
                 cpu: rsp_cpu::Cpu {
@@ -313,25 +357,26 @@ impl Device {
                         pc: 0,
                     },
                     broken: false,
+                    running: false,
                     halted: false,
                     sync_point: false,
                     cycle_counter: 0,
                     gpr: [0; 32],
-                    vpr: [0; 32],
+                    vpr: unsafe { [_mm_setzero_si128(); 32] },
                     reciprocals: [0; 512],
                     inverse_square_roots: [0; 512],
                     divdp: false,
                     divin: 0,
                     divout: 0,
-                    shuffle: unsafe { [std::arch::x86_64::_mm_setzero_si128(); 16] },
-                    vcol: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    vcoh: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    vccl: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    vcch: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    vce: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    accl: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    accm: unsafe { std::arch::x86_64::_mm_setzero_si128() },
-                    acch: unsafe { std::arch::x86_64::_mm_setzero_si128() },
+                    shuffle: unsafe { [_mm_setzero_si128(); 16] },
+                    vcol: unsafe { _mm_setzero_si128() },
+                    vcoh: unsafe { _mm_setzero_si128() },
+                    vccl: unsafe { _mm_setzero_si128() },
+                    vcch: unsafe { _mm_setzero_si128() },
+                    vce: unsafe { _mm_setzero_si128() },
+                    accl: unsafe { _mm_setzero_si128() },
+                    accm: unsafe { _mm_setzero_si128() },
+                    acch: unsafe { _mm_setzero_si128() },
                     special_instrs: [rsp_su_instructions::reserved; 64],
                     regimm_instrs: [rsp_su_instructions::reserved; 32],
                     cop0_instrs: [rsp_su_instructions::reserved; 32],
@@ -344,6 +389,8 @@ impl Device {
                 regs: [0; rsp_interface::SP_REGS_COUNT as usize],
                 regs2: [0; rsp_interface::SP_REGS2_COUNT as usize],
                 mem: [0; 0x2000],
+                last_status_value: 0,
+                run_after_dma: false,
                 fifo: [rsp_interface::RspDma {
                     dir: rsp_interface::DmaDir::None,
                     length: 0,
@@ -355,6 +402,7 @@ impl Device {
                 regs_dpc: [0; rdp::DPC_REGS_COUNT as usize],
                 regs_dps: [0; rdp::DPS_REGS_COUNT as usize],
                 wait_frozen: false,
+                last_status_value: 0,
             },
             mi: mi::Mi {
                 regs: [0; mi::MI_REGS_COUNT as usize],
@@ -365,6 +413,7 @@ impl Device {
             ai: ai::Ai {
                 regs: [0; ai::AI_REGS_COUNT as usize],
                 last_read: 0,
+                freq: 33600,
                 delayed_carry: false,
                 fifo: [ai::AiDma {
                     address: 0,
@@ -378,6 +427,7 @@ impl Device {
             },
             ri: ri::Ri {
                 regs: [0; ri::RI_REGS_COUNT as usize],
+                ram_init: false,
             },
             vi: vi::Vi {
                 regs: [0; vi::VI_REGS_COUNT as usize],
@@ -385,15 +435,30 @@ impl Device {
                 field: 0,
                 delay: 0,
                 count_per_scanline: 0,
+                enable_speed_limiter: true,
                 limiter: None,
                 vi_counter: 0,
+                last_origin: 0,
+                internal_frame_counter: 0,
+                min_wait_time: std::time::Duration::from_secs(1),
+                frame_time: 0.0,
+                limit_freq: 2,
+                limit_freq_check: std::time::Instant::now(),
             },
-            flashram: sram::Flashram {
+            vru_window: controller::vru::VruWindow {
+                window_notifier: None,
+                word_receiver: None,
+                gui_ctx: None,
+            },
+            vru: controller::vru::Vru {
                 status: 0,
-                erase_page: 0,
-                page_buf: [0xff; 128],
-                silicon_id: [sram::FLASHRAM_TYPE_ID, sram::MX29L1100_ID],
-                mode: sram::FlashramMode::ReadArray,
+                voice_state: 0,
+                load_offset: 0,
+                voice_init: 0,
+                word_buffer: [0; 40],
+                words: Vec::new(),
+                talking: false,
+                word_mappings: HashMap::new(),
             },
         }
     }

src/device/ai.rs

@@ -1,37 +1,38 @@
-use crate::device;
-use crate::ui;
+use crate::{device, ui};
 
-pub const AI_DRAM_ADDR_REG: u32 = 0;
-pub const AI_LEN_REG: u32 = 1;
-//pub const AI_CONTROL_REG: u32 = 2;
-pub const AI_STATUS_REG: u32 = 3;
-pub const AI_DACRATE_REG: u32 = 4;
-//pub const AI_BITRATE_REG: u32 = 5;
+const AI_DRAM_ADDR_REG: u32 = 0;
+const AI_LEN_REG: u32 = 1;
+// const AI_CONTROL_REG: u32 = 2;
+const AI_STATUS_REG: u32 = 3;
+const AI_DACRATE_REG: u32 = 4;
+// const AI_BITRATE_REG: u32 = 5;
 pub const AI_REGS_COUNT: u32 = 6;
 
-pub const AI_STATUS_BUSY: u32 = 0x40000000;
-pub const AI_STATUS_FULL: u32 = 0x80000000;
+const AI_STATUS_BUSY: u32 = 0x40000000;
+const AI_STATUS_FULL: u32 = 0x80000000;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Ai {
     pub regs: [u32; AI_REGS_COUNT as usize],
     pub fifo: [AiDma; 2],
     pub last_read: u64,
     pub delayed_carry: bool,
+    pub freq: u64,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct AiDma {
     pub address: u64,
     pub length: u64,
     pub duration: u64,
 }
 
-pub fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
+fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
     if device.ai.fifo[0].duration == 0 {
         return 0;
     }
 
-    let next_ai_event = device::events::get_event(device, device::events::EventType::AI);
+    let next_ai_event = device::events::get_event(device, device::events::EVENT_TYPE_AI);
     if next_ai_event.is_none() {
         return 0;
     }
@@ -43,7 +44,7 @@ pub fn get_remaining_dma_length(device: &mut device::Device) -> u64 {
     dma_length & !7
 }
 
-pub fn get_dma_duration(device: &device::Device) -> u64 {
+fn get_dma_duration(device: &device::Device) -> u64 {
     let samples_per_sec = device.vi.clock / (1 + device.ai.regs[AI_DACRATE_REG as usize]) as u64;
     let bytes_per_sample = 4; /* XXX: assume 16bit stereo - should depends on bitrate instead */
     let length = (device.ai.regs[AI_LEN_REG as usize] & !7) as u64;
@@ -51,7 +52,7 @@ pub fn get_dma_duration(device: &device::Device) -> u64 {
     length * (device.cpu.clock_rate / (bytes_per_sample * samples_per_sec))
 }
 
-pub fn do_dma(device: &mut device::Device) {
+fn do_dma(device: &mut device::Device) {
     device.ai.last_read = device.ai.fifo[0].length;
 
     if device.ai.delayed_carry {
@@ -64,14 +65,13 @@ pub fn do_dma(device: &mut device::Device) {
     /* schedule end of dma event */
     device::events::create_event(
         device,
-        device::events::EventType::AI,
+        device::events::EVENT_TYPE_AI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + device.ai.fifo[0].duration,
-        dma_event,
     );
-    device::mi::schedule_rcp_interrupt(device, device::mi::MI_INTR_AI);
+    device::mi::set_rcp_interrupt(device, device::mi::MI_INTR_AI);
 }
 
-pub fn fifo_push(device: &mut device::Device) {
+fn fifo_push(device: &mut device::Device) {
     let duration = get_dma_duration(device);
 
     if (device.ai.regs[AI_STATUS_REG as usize] & AI_STATUS_BUSY) != 0 {
@@ -91,7 +91,7 @@ pub fn fifo_push(device: &mut device::Device) {
     }
 }
 
-pub fn fifo_pop(device: &mut device::Device) {
+fn fifo_pop(device: &mut device::Device) {
     if device.ai.regs[AI_STATUS_REG as usize] & AI_STATUS_FULL != 0 {
         device.ai.fifo[0].address = device.ai.fifo[1].address;
         device.ai.fifo[0].length = device.ai.fifo[1].length;
@@ -111,7 +111,7 @@ pub fn read_regs(
     _access_size: device::memory::AccessSize,
 ) -> u32 {
     let reg = (address & 0xFFFF) >> 2;
-    match reg as u32 {
+    let return_value = match reg as u32 {
         AI_LEN_REG => {
             let value = get_remaining_dma_length(device);
             if value < device.ai.last_read {
@@ -128,7 +128,9 @@ pub fn read_regs(
             value as u32
         }
         _ => device.ai.regs[reg as usize],
-    }
+    };
+    device::cop0::add_cycles(device, 20);
+    return_value
 }
 
 pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u32) {
@@ -143,8 +145,9 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
         AI_STATUS_REG => device::mi::clear_rcp_interrupt(device, device::mi::MI_INTR_AI),
         AI_DACRATE_REG => {
             if device.ai.regs[reg as usize] != value & mask {
-                let frequency = device.vi.clock / (1 + (value & mask)) as u64;
-                ui::audio::init(&mut device.ui, frequency)
+                device.ai.freq = device.vi.clock / (1 + (value & mask)) as u64;
+                ui::audio::close(&mut device.ui);
+                ui::audio::init(&mut device.ui, device.ai.freq)
             }
             device::memory::masked_write_32(&mut device.ai.regs[reg as usize], value, mask)
         }

src/device/cache.rs

@@ -1,15 +1,16 @@
-use crate::device;
+use crate::{device, savestates};
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct ICache {
     pub valid: bool,
     pub tag: u32,
     pub index: u16,
     pub words: [u32; 8],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instruction: [fn(&mut device::Device, u32); 8],
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct DCache {
     pub valid: bool,
     pub dirty: bool,
@@ -205,7 +206,7 @@ pub fn dcache_writeback(device: &mut device::Device, line_index: usize) {
     );
 }
 
-pub fn dcache_fill(device: &mut device::Device, line_index: usize, phys_address: u64) {
+fn dcache_fill(device: &mut device::Device, line_index: usize, phys_address: u64) {
     device::cop0::add_cycles(device, 7);
 
     device.memory.dcache[line_index].valid = true;

src/device/cart.rs

@@ -1,32 +1,62 @@
 use chrono::Datelike;
 use chrono::Timelike;
 
-use crate::device;
-use crate::ui;
+use crate::{device, ui};
 
-pub const JCMD_STATUS: u8 = 0x00;
-pub const JCMD_EEPROM_READ: u8 = 0x04;
-pub const JCMD_EEPROM_WRITE: u8 = 0x05;
-pub const JCMD_AF_RTC_STATUS: u8 = 0x06;
-pub const JCMD_AF_RTC_READ: u8 = 0x07;
-pub const JCMD_AF_RTC_WRITE: u8 = 0x08;
-pub const JCMD_RESET: u8 = 0xff;
+pub mod rom;
+pub mod sc64;
+pub mod sram;
 
-pub const JDT_AF_RTC: u16 = 0x1000; /* RTC */
-pub const JDT_EEPROM_4K: u16 = 0x8000; /* 4k EEPROM */
-pub const JDT_EEPROM_16K: u16 = 0xc000; /* 16k EEPROM */
-pub const EEPROM_BLOCK_SIZE: usize = 8;
+const JCMD_STATUS: u8 = 0x00;
+const JCMD_EEPROM_READ: u8 = 0x04;
+const JCMD_EEPROM_WRITE: u8 = 0x05;
+const JCMD_AF_RTC_STATUS: u8 = 0x06;
+const JCMD_AF_RTC_READ: u8 = 0x07;
+const JCMD_AF_RTC_WRITE: u8 = 0x08;
+const JCMD_RESET: u8 = 0xff;
+
+const JDT_AF_RTC: u16 = 0x1000; /* RTC */
+const JDT_EEPROM_4K: u16 = 0x8000; /* 4k EEPROM */
+const JDT_EEPROM_16K: u16 = 0xc000; /* 16k EEPROM */
+const EEPROM_BLOCK_SIZE: usize = 8;
 pub const EEPROM_MAX_SIZE: usize = 0x800;
 
+#[derive(serde::Serialize, serde::Deserialize)]
+pub enum CicType {
+    CicNus6101,
+    CicNus6102,
+    CicNus6103,
+    CicNus6105,
+    CicNus6106,
+    CicNus5167,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct AfRtc {
     pub control: u16,
 }
 
-pub fn byte2bcd(mut n: u32) -> u8 {
+fn byte2bcd(mut n: u32) -> u8 {
     n %= 100;
     (((n / 10) << 4) | (n % 10)) as u8
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Cart {
+    #[serde(skip)]
+    pub rom: Vec<u8>,
+    #[serde(with = "serde_big_array::BigArray")]
+    pub is_viewer_buffer: [u8; 0xFFFF],
+    pub pal: bool,
+    pub latch: u32,
+    pub cic_type: CicType,
+    pub cic_seed: u8,
+    pub rdram_size_offset: usize,
+    pub rtc: AfRtc,
+    pub sc64: sc64::Sc64,
+    pub flashram: sram::Flashram,
+}
+
 pub fn process(device: &mut device::Device, channel: usize) {
     let cmd = device.pif.ram[device.pif.channels[channel].tx_buf.unwrap()];
 
@@ -95,35 +125,35 @@ pub fn process(device: &mut device::Device, channel: usize) {
     }
 }
 
-pub fn format_eeprom(device: &mut device::Device) {
-    if device.ui.saves.eeprom.0.len() < EEPROM_MAX_SIZE {
-        device.ui.saves.eeprom.0.resize(EEPROM_MAX_SIZE, 0xFF)
+fn format_eeprom(device: &mut device::Device) {
+    if device.ui.saves.eeprom.data.len() < EEPROM_MAX_SIZE {
+        device.ui.saves.eeprom.data.resize(EEPROM_MAX_SIZE, 0xFF)
     }
 }
 
-pub fn eeprom_read_block(device: &mut device::Device, block: usize, offset: usize) {
+fn eeprom_read_block(device: &mut device::Device, block: usize, offset: usize) {
     let address = device.pif.ram[block] as usize * EEPROM_BLOCK_SIZE;
 
     format_eeprom(device);
 
     device.pif.ram[offset..offset + EEPROM_BLOCK_SIZE]
-        .copy_from_slice(&device.ui.saves.eeprom.0[address..address + EEPROM_BLOCK_SIZE]);
+        .copy_from_slice(&device.ui.saves.eeprom.data[address..address + EEPROM_BLOCK_SIZE]);
 }
 
-pub fn eeprom_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn eeprom_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     let address = device.pif.ram[block] as usize * EEPROM_BLOCK_SIZE;
 
     format_eeprom(device);
 
-    device.ui.saves.eeprom.0[address..address + EEPROM_BLOCK_SIZE]
+    device.ui.saves.eeprom.data[address..address + EEPROM_BLOCK_SIZE]
         .copy_from_slice(&device.pif.ram[offset..offset + EEPROM_BLOCK_SIZE]);
 
     device.pif.ram[status] = 0x00;
 
-    device.ui.saves.eeprom.1 = true
+    device.ui.saves.eeprom.written = true
 }
 
-pub fn time2data(device: &mut device::Device, offset: usize) {
+fn time2data(device: &mut device::Device, offset: usize) {
     let now: chrono::DateTime<chrono::Local> = chrono::Local::now();
 
     device.pif.ram[offset] = byte2bcd(now.second());
@@ -136,7 +166,7 @@ pub fn time2data(device: &mut device::Device, offset: usize) {
     device.pif.ram[offset + 7] = byte2bcd((now.year() as u32 - 1900) / 100);
 }
 
-pub fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     match device.pif.ram[block] {
         0 => {
             device.pif.ram[offset] = device.cart.rtc.control as u8;
@@ -155,7 +185,7 @@ pub fn af_rtc_read_block(device: &mut device::Device, block: usize, offset: usiz
         }
     }
 }
-pub fn af_rtc_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
+fn af_rtc_write_block(device: &mut device::Device, block: usize, offset: usize, status: usize) {
     match device.pif.ram[block] {
         0 => {
             device.cart.rtc.control =

src/device/cart/rom.rs

@@ -1,25 +1,22 @@
 use crate::device;
 use sha2::{Digest, Sha256};
 
-pub enum CicType {
-    CicNus6101,
-    CicNus6102,
-    CicNus6103,
-    CicNus6105,
-    CicNus6106,
-    CicNus5167,
-}
+const CART_MASK: usize = 0xFFFFFFF;
 
-pub const CART_MASK: usize = 0xFFFFFFF;
-pub struct Cart {
-    pub rom: Vec<u8>,
-    pub is_viewer_buffer: [u8; 0xFFFF],
-    pub pal: bool,
-    pub latch: u32,
-    pub cic_type: CicType,
-    pub cic_seed: u8,
-    pub rdram_size_offset: usize,
-    pub rtc: device::cart::AfRtc,
+fn read_cart_word(device: &mut device::Device, address: usize) -> u32 {
+    let mut data: [u8; 4] = device.cart.rom[address..address + 4].try_into().unwrap();
+    for i in 0..4 {
+        if device
+            .ui
+            .saves
+            .romsave
+            .data
+            .contains_key(&(address as u32 + i))
+        {
+            data[i as usize] = device.ui.saves.romsave.data[&(address as u32 + i)];
+        }
+    }
+    u32::from_be_bytes(data)
 }
 
 pub fn read_mem_fast(
@@ -28,11 +25,7 @@ pub fn read_mem_fast(
     _access_size: device::memory::AccessSize,
 ) -> u32 {
     let masked_address = address as usize & CART_MASK;
-    u32::from_be_bytes(
-        device.cart.rom[masked_address..masked_address + 4]
-            .try_into()
-            .unwrap(),
-    )
+    read_cart_word(device, masked_address)
 }
 
 pub fn read_mem(
@@ -48,15 +41,26 @@ pub fn read_mem(
         device.cart.latch
     } else {
         let masked_address = address as usize & CART_MASK;
-        u32::from_be_bytes(
-            device.cart.rom[masked_address..masked_address + 4]
-                .try_into()
-                .unwrap(),
-        )
+        read_cart_word(device, masked_address)
     }
 }
 
-pub fn write_mem(device: &mut device::Device, _address: u64, value: u32, mask: u32) {
+pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+    if device.cart.sc64.cfg[device::cart::sc64::SC64_ROM_WRITE_ENABLE as usize] != 0 {
+        let masked_address = address as usize & CART_MASK;
+        let mut data = read_cart_word(device, masked_address);
+        device::memory::masked_write_32(&mut data, value, mask);
+        for (i, item) in data.to_be_bytes().iter().enumerate() {
+            device
+                .ui
+                .saves
+                .romsave
+                .data
+                .insert((masked_address + i) as u32, *item);
+        }
+        device.ui.saves.romsave.written = true;
+    }
+
     device.cart.latch = value & mask;
 
     device.pi.regs[device::pi::PI_STATUS_REG as usize] |= device::pi::PI_STATUS_IO_BUSY;
@@ -64,9 +68,8 @@ pub fn write_mem(device: &mut device::Device, _address: u64, value: u32, mask: u
     let cycles = device::pi::calculate_cycles(device, 1, 4);
     device::events::create_event(
         device,
-        device::events::EventType::PI,
+        device::events::EVENT_TYPE_PI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + cycles,
-        device::pi::dma_event,
     );
 }
 
@@ -76,24 +79,22 @@ pub fn dma_read(
     mut dram_addr: u32,
     length: u32,
 ) -> u64 {
-    dram_addr &= device::rdram::RDRAM_MASK as u32;
-    cart_addr &= CART_MASK as u32;
+    if device.cart.sc64.cfg[device::cart::sc64::SC64_ROM_WRITE_ENABLE as usize] != 0 {
+        dram_addr &= device::rdram::RDRAM_MASK as u32;
+        cart_addr &= CART_MASK as u32;
 
-    for i in 0..length {
-        if cart_addr + i < device.cart.rom.len() as u32 {
-            device.cart.rom[(cart_addr + i) as usize] =
-                device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap];
+        for i in 0..length {
+            if cart_addr + i < device.cart.rom.len() as u32 {
+                device.ui.saves.romsave.data.insert(
+                    cart_addr + i,
+                    device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap],
+                );
 
-            device.ui.saves.romsave.0.insert(
-                (cart_addr + i).to_string(),
-                serde_json::to_value(device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap])
-                    .unwrap(),
-            );
+                device.ui.saves.romsave.written = true;
+            }
         }
     }
 
-    device.ui.saves.romsave.1 = true;
-
     device::pi::calculate_cycles(device, 1, length)
 }
 
@@ -109,7 +110,11 @@ pub fn dma_write(
     let mut i = dram_addr;
     let mut j = cart_addr;
     while i < dram_addr + length && j < device.cart.rom.len() as u32 {
-        device.rdram.mem[i as usize ^ device.byte_swap] = device.cart.rom[j as usize];
+        if device.ui.saves.romsave.data.contains_key(&j) {
+            device.rdram.mem[i as usize ^ device.byte_swap] = device.ui.saves.romsave.data[&j];
+        } else {
+            device.rdram.mem[i as usize ^ device.byte_swap] = device.cart.rom[j as usize];
+        }
         i += 1;
         j += 1;
     }
@@ -123,7 +128,7 @@ pub fn dma_write(
 
 pub fn init(device: &mut device::Device, rom_file: Vec<u8>) {
     device.cart.rom = rom_file;
-    set_system_region(device, device.cart.rom[0x3E]);
+    device.cart.pal = is_system_pal(device.cart.rom[0x3E]);
     set_cic(device);
 
     device.ui.game_hash = calculate_hash(&device.cart.rom);
@@ -134,60 +139,52 @@ pub fn init(device: &mut device::Device, rom_file: Vec<u8>) {
     }
 }
 
-pub fn load_rom_save(device: &mut device::Device) {
-    if device.ui.saves.romsave.0.is_empty() {
-        return;
-    }
-    for (key, value) in device.ui.saves.romsave.0.iter() {
-        device.cart.rom[key.parse::<usize>().unwrap()] =
-            serde_json::from_value(value.clone()).unwrap()
-    }
-}
-
-pub fn set_system_region(device: &mut device::Device, country: u8) {
+fn is_system_pal(country: u8) -> bool {
     let pal_codes: [u8; 8] = [b'D', b'F', b'I', b'P', b'S', b'U', b'X', b'Y'];
     for i in pal_codes {
         if country == i {
-            device.cart.pal = true
+            return true;
         }
     }
+    false
 }
 
-pub fn set_cic(device: &mut device::Device) {
+fn set_cic(device: &mut device::Device) {
     let hash = calculate_hash(&device.cart.rom[0x40..0x1000]);
     match hash.as_str() {
         "B99F06C4802C2377E31E388435955EF3E99C618A6D55D24699D828EB1075F1EB" => {
-            device.cart.cic_type = CicType::CicNus6101;
+            device.cart.cic_type = device::cart::CicType::CicNus6101;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
         }
         "61E88238552C356C23D19409FE5570EE6910419586BC6FC740F638F761ADC46E" => {
-            device.cart.cic_type = CicType::CicNus6102;
+            device.cart.cic_type = device::cart::CicType::CicNus6102;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
         }
         "BF3620D30817007091EBE9BDDD1B88C23B8A0052170B3309CDE5B6B4238E45E7" => {
-            device.cart.cic_type = CicType::CicNus6103;
+            device.cart.cic_type = device::cart::CicType::CicNus6103;
             device.cart.cic_seed = 0x78;
             device.cart.rdram_size_offset = 0x318;
         }
         "04B7BC6717A9F0EB724CF927E74AD3876C381CBB280D841736FC5E55580B756B" => {
-            device.cart.cic_type = CicType::CicNus6105;
+            device.cart.cic_type = device::cart::CicType::CicNus6105;
             device.cart.cic_seed = 0x91;
             device.cart.rdram_size_offset = 0x3F0;
         }
         "36ADC40148AF56F0D78CD505EB6A90117D1FD6F11C6309E52ED36BC4C6BA340E" => {
-            device.cart.cic_type = CicType::CicNus6106;
+            device.cart.cic_type = device::cart::CicType::CicNus6106;
             device.cart.cic_seed = 0x85;
             device.cart.rdram_size_offset = 0x318;
         }
         "53C0088FB777870D0AF32F0251E964030E2E8B72E830C26042FD191169508C05" => {
-            device.cart.cic_type = CicType::CicNus5167;
+            device.cart.cic_type = device::cart::CicType::CicNus5167;
             device.cart.cic_seed = 0xdd;
             device.cart.rdram_size_offset = 0x318;
+            device.cart.sc64.cfg[device::cart::sc64::SC64_ROM_WRITE_ENABLE as usize] = 1;
         }
         _ => {
-            device.cart.cic_type = CicType::CicNus6102;
+            device.cart.cic_type = device::cart::CicType::CicNus6102;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
             println!("unknown IPL3 {}", hash)
@@ -195,7 +192,7 @@ pub fn set_cic(device: &mut device::Device) {
     }
 }
 
-fn calculate_hash(data: &[u8]) -> String {
+pub fn calculate_hash(data: &[u8]) -> String {
     let mut hasher = Sha256::new();
     hasher.update(data);
     format!("{:X}", hasher.finalize())

src/device/cart/sc64.rs

@@ -0,0 +1,250 @@
+use crate::device;
+
+pub const SDCARD_SIZE: usize = 0x4000000;
+
+const SC64_SCR_REG: u32 = 0;
+const SC64_DATA0_REG: u32 = 1;
+const SC64_DATA1_REG: u32 = 2;
+const SC64_IDENTIFIER_REG: u32 = 3;
+const SC64_KEY_REG: u32 = 4;
+//const SC64_IRQ_REG: u32 = 5;
+//const SC64_AUX_REG: u32 = 6;
+pub const SC64_REGS_COUNT: u32 = 7;
+
+pub const SC64_ROM_WRITE_ENABLE: u32 = 1;
+pub const SC64_CFG_COUNT: u32 = 15;
+
+const SC64_BUFFER_MASK: usize = 0x1FFF;
+
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Sc64 {
+    #[serde(with = "serde_big_array::BigArray")]
+    pub buffer: [u8; 8192],
+    pub regs: [u32; SC64_REGS_COUNT as usize],
+    pub regs_locked: bool,
+    pub cfg: [u32; SC64_CFG_COUNT as usize],
+    pub sector: u32,
+}
+
+fn format_sdcard(device: &mut device::Device) {
+    if device.ui.saves.sdcard.data.is_empty() {
+        device.ui.saves.sdcard.data.resize(SDCARD_SIZE, 0);
+        let buf = std::io::Cursor::new(&mut device.ui.saves.sdcard.data);
+        fatfs::format_volume(buf, fatfs::FormatVolumeOptions::new()).unwrap();
+    }
+}
+
+pub fn read_regs(
+    device: &mut device::Device,
+    address: u64,
+    _access_size: device::memory::AccessSize,
+) -> u32 {
+    device::cop0::add_cycles(device, 20);
+    if device.cart.sc64.regs_locked {
+        return 0;
+    }
+    let reg = (address & 0xFFFF) >> 2;
+    match reg as u32 {
+        SC64_SCR_REG | SC64_DATA0_REG | SC64_DATA1_REG => device.cart.sc64.regs[reg as usize],
+        SC64_IDENTIFIER_REG => 0x53437632,
+        _ => panic!("unknown read reg {} address {:#x}", reg, address),
+    }
+}
+
+pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+    let reg = (address & 0xFFFF) >> 2;
+    match reg as u32 {
+        SC64_KEY_REG => {
+            device::memory::masked_write_32(&mut device.cart.sc64.regs[reg as usize], value, mask);
+            if device.cart.sc64.regs[SC64_KEY_REG as usize] == 0x4F434B5F {
+                device.cart.sc64.regs_locked = false;
+            } else if device.cart.sc64.regs[SC64_KEY_REG as usize] == 0xFFFFFFFF {
+                device.cart.sc64.regs_locked = true;
+            }
+        }
+        SC64_DATA0_REG | SC64_DATA1_REG => {
+            if !device.cart.sc64.regs_locked {
+                device::memory::masked_write_32(
+                    &mut device.cart.sc64.regs[reg as usize],
+                    value,
+                    mask,
+                );
+            }
+        }
+        SC64_SCR_REG => {
+            if !device.cart.sc64.regs_locked {
+                match char::from_u32(value & mask).unwrap() {
+                    'c' => {
+                        // get config
+                        device.cart.sc64.regs[SC64_DATA1_REG as usize] = device.cart.sc64.cfg
+                            [device.cart.sc64.regs[SC64_DATA0_REG as usize] as usize]
+                    }
+                    'C' => {
+                        // set config
+                        std::mem::swap(
+                            &mut device.cart.sc64.cfg
+                                [device.cart.sc64.regs[SC64_DATA0_REG as usize] as usize],
+                            &mut device.cart.sc64.regs[SC64_DATA1_REG as usize],
+                        );
+                    }
+                    'i' => {
+                        // sd card operation
+                        match device.cart.sc64.regs[SC64_DATA1_REG as usize] {
+                            0 => { //Init SD card
+                            }
+                            1 => { //Deinit SD card
+                            }
+                            _ => {
+                                panic!(
+                                    "unknown sc64 sd card operation: {}",
+                                    device.cart.sc64.regs[SC64_DATA1_REG as usize]
+                                )
+                            }
+                        }
+                    }
+                    'I' => {
+                        // set sd sector
+                        device.cart.sc64.sector = device.cart.sc64.regs[SC64_DATA0_REG as usize];
+                    }
+                    's' => {
+                        format_sdcard(device);
+                        // read sd card
+                        let address =
+                            device.cart.sc64.regs[SC64_DATA0_REG as usize] as u64 & 0x1FFFFFFF;
+                        let offset = (device.cart.sc64.sector * 512) as usize;
+                        let length =
+                            (device.cart.sc64.regs[SC64_DATA1_REG as usize] * 512) as usize;
+                        let mut i = 0;
+
+                        while i < length {
+                            if offset + i < device.ui.saves.sdcard.data.len() {
+                                let data = u32::from_be_bytes(
+                                    device.ui.saves.sdcard.data[(offset + i)..(offset + i + 4)]
+                                        .try_into()
+                                        .unwrap(),
+                                );
+
+                                device::memory::data_write(
+                                    device,
+                                    address + i as u64,
+                                    data,
+                                    0xFFFFFFFF,
+                                    false,
+                                );
+                            } else {
+                                panic!("sd card read out of bounds")
+                            }
+                            i += 4;
+                        }
+                    }
+                    'S' => {
+                        format_sdcard(device);
+                        // write sd card
+                        let address =
+                            device.cart.sc64.regs[SC64_DATA0_REG as usize] as u64 & 0x1FFFFFFF;
+                        let offset = (device.cart.sc64.sector * 512) as usize;
+                        let length =
+                            (device.cart.sc64.regs[SC64_DATA1_REG as usize] * 512) as usize;
+                        let mut i = 0;
+
+                        while i < length {
+                            if offset + i < device.ui.saves.sdcard.data.len() {
+                                let data = device::memory::data_read(
+                                    device,
+                                    address + i as u64,
+                                    device::memory::AccessSize::Word,
+                                    false,
+                                )
+                                .to_be_bytes();
+                                device.ui.saves.sdcard.data[(offset + i)..(offset + i + 4)]
+                                    .copy_from_slice(&data);
+                            } else {
+                                panic!("sd card write out of bounds")
+                            }
+                            i += 4;
+                        }
+                        device.ui.saves.sdcard.written = true;
+                    }
+                    'U' => {} // USB_WRITE_STATUS, ignored
+                    'M' => {} // USB_WRITE, ignored
+                    _ => {
+                        panic!(
+                            "unknown sc64 command: {}",
+                            char::from_u32(value & mask).unwrap()
+                        )
+                    }
+                }
+            }
+        }
+        _ => panic!(
+            "unknown write reg {} address {:#x} value {}",
+            reg,
+            address,
+            char::from_u32(value & mask).unwrap()
+        ),
+    }
+}
+
+pub fn read_mem(
+    device: &mut device::Device,
+    address: u64,
+    _access_size: device::memory::AccessSize,
+) -> u32 {
+    let masked_address = address as usize & SC64_BUFFER_MASK;
+    u32::from_be_bytes(
+        device.cart.sc64.buffer[masked_address..masked_address + 4]
+            .try_into()
+            .unwrap(),
+    )
+}
+
+pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+    let masked_address = address as usize & SC64_BUFFER_MASK;
+    let mut data = u32::from_be_bytes(
+        device.cart.sc64.buffer[masked_address..masked_address + 4]
+            .try_into()
+            .unwrap(),
+    );
+    device::memory::masked_write_32(&mut data, value, mask);
+    device.cart.sc64.buffer[masked_address..masked_address + 4]
+        .copy_from_slice(&data.to_be_bytes());
+}
+
+pub fn dma_read(
+    device: &mut device::Device,
+    mut cart_addr: u32,
+    mut dram_addr: u32,
+    length: u32,
+) -> u64 {
+    dram_addr &= device::rdram::RDRAM_MASK as u32;
+    cart_addr &= SC64_BUFFER_MASK as u32;
+    let mut i = dram_addr;
+    let mut j = cart_addr;
+
+    while i < dram_addr + length && i < device.rdram.size {
+        device.cart.sc64.buffer[j as usize] = device.rdram.mem[i as usize ^ device.byte_swap];
+        i += 1;
+        j += 1;
+    }
+
+    device::pi::calculate_cycles(device, 1, length)
+}
+
+pub fn dma_write(
+    device: &mut device::Device,
+    mut cart_addr: u32,
+    mut dram_addr: u32,
+    length: u32,
+) -> u64 {
+    dram_addr &= device::rdram::RDRAM_MASK as u32;
+    cart_addr &= SC64_BUFFER_MASK as u32;
+    let mut i = dram_addr;
+    let mut j = cart_addr;
+
+    while i < dram_addr + length && i < device.rdram.size {
+        device.rdram.mem[i as usize ^ device.byte_swap] = device.cart.sc64.buffer[j as usize];
+        i += 1;
+        j += 1;
+    }
+    device::pi::calculate_cycles(device, 1, length)
+}

src/device/cart/sram.rs

@@ -1,15 +1,14 @@
-use crate::device;
-use crate::ui;
+use crate::{device, ui};
 
-pub const SRAM_MASK: usize = 0xFFFF;
+const SRAM_MASK: usize = 0xFFFF;
 pub const SRAM_SIZE: usize = 0x8000;
 pub const FLASHRAM_SIZE: usize = 0x20000;
 pub const FLASHRAM_TYPE_ID: u32 = 0x11118001;
 pub const MX29L1100_ID: u32 = 0x00c2001e;
-pub const MX29L0000_ID: u32 = 0x00c20000;
-pub const MX29L0001_ID: u32 = 0x00c20001;
+const MX29L0000_ID: u32 = 0x00c20000;
+const MX29L0001_ID: u32 = 0x00c20001;
 
-#[derive(PartialEq)]
+#[derive(PartialEq, serde::Serialize, serde::Deserialize)]
 pub enum FlashramMode {
     ReadArray,
     ReadSiliconId,
@@ -19,43 +18,46 @@ pub enum FlashramMode {
     PageProgram,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Flashram {
     pub status: u32,
     pub mode: FlashramMode,
     pub erase_page: u16,
+    #[serde(with = "serde_big_array::BigArray")]
     pub page_buf: [u8; 128],
     pub silicon_id: [u32; 2],
 }
 
-pub fn format_sram(device: &mut device::Device) {
-    if device.ui.saves.sram.0.len() < SRAM_SIZE {
-        device.ui.saves.sram.0.resize(SRAM_SIZE, 0xFF)
+fn format_sram(device: &mut device::Device) {
+    if device.ui.saves.sram.data.len() < SRAM_SIZE {
+        device.ui.saves.sram.data.resize(SRAM_SIZE, 0xFF)
     }
 }
 
-pub fn format_flash(device: &mut device::Device) {
-    if device.ui.saves.flash.0.len() < FLASHRAM_SIZE {
-        device.ui.saves.flash.0.resize(FLASHRAM_SIZE, 0xFF)
+fn format_flash(device: &mut device::Device) {
+    if device.ui.saves.flash.data.len() < FLASHRAM_SIZE {
+        device.ui.saves.flash.data.resize(FLASHRAM_SIZE, 0xFF)
     }
 }
 
-pub fn read_mem_sram(device: &mut device::Device, address: u64) -> u32 {
+fn read_mem_sram(device: &mut device::Device, address: u64) -> u32 {
     let masked_address = address as usize & SRAM_MASK;
 
     format_sram(device);
 
     u32::from_be_bytes(
-        device.ui.saves.sram.0[masked_address..masked_address + 4]
+        device.ui.saves.sram.data[masked_address..masked_address + 4]
             .try_into()
             .unwrap(),
     )
 }
 
-pub fn read_mem_flash(device: &device::Device, address: u64) -> u32 {
-    if (address & 0x1ffff) == 0x00000 && device.flashram.mode == FlashramMode::Status {
+fn read_mem_flash(device: &device::Device, address: u64) -> u32 {
+    if (address & 0x1ffff) == 0x00000 && device.cart.flashram.mode == FlashramMode::Status {
         /* read Status register */
-        device.flashram.status
-    } else if (address & 0x1ffff) == 0x0000 && device.flashram.mode == FlashramMode::ReadArray {
+        device.cart.flashram.status
+    } else if (address & 0x1ffff) == 0x0000 && device.cart.flashram.mode == FlashramMode::ReadArray
+    {
         /* flashram MMIO read are not supported except for the "dummy" read @0x0000 done before DMA.
          * returns a "dummy" value. */
         return 0;
@@ -80,26 +82,27 @@ pub fn read_mem(
     }
 }
 
-pub fn write_mem_sram(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+fn write_mem_sram(device: &mut device::Device, address: u64, value: u32, mask: u32) {
     let masked_address = address as usize & SRAM_MASK;
 
     format_sram(device);
 
     let mut data = u32::from_be_bytes(
-        device.ui.saves.sram.0[masked_address..masked_address + 4]
+        device.ui.saves.sram.data[masked_address..masked_address + 4]
             .try_into()
             .unwrap(),
     );
     device::memory::masked_write_32(&mut data, value, mask);
-    device.ui.saves.sram.0[masked_address..masked_address + 4].copy_from_slice(&data.to_be_bytes());
+    device.ui.saves.sram.data[masked_address..masked_address + 4]
+        .copy_from_slice(&data.to_be_bytes());
 
-    device.ui.saves.sram.1 = true
+    device.ui.saves.sram.written = true
 }
 
-pub fn write_mem_flash(device: &mut device::Device, address: u64, value: u32, mask: u32) {
-    if (address & 0x1ffff) == 0x00000 && device.flashram.mode == FlashramMode::Status {
+fn write_mem_flash(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+    if (address & 0x1ffff) == 0x00000 && device.cart.flashram.mode == FlashramMode::Status {
         /* clear/set Status register */
-        device.flashram.status = (value & mask) & 0xff;
+        device.cart.flashram.status = (value & mask) & 0xff;
     } else if (address & 0x1ffff) == 0x10000 {
         /* set command */
         format_flash(device);
@@ -122,18 +125,12 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
     let cycles = device::pi::calculate_cycles(device, 2, 4);
     device::events::create_event(
         device,
-        device::events::EventType::PI,
+        device::events::EVENT_TYPE_PI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + cycles,
-        device::pi::dma_event,
     );
 }
 
-pub fn dma_read_sram(
-    device: &mut device::Device,
-    mut cart_addr: u32,
-    mut dram_addr: u32,
-    length: u32,
-) {
+fn dma_read_sram(device: &mut device::Device, mut cart_addr: u32, mut dram_addr: u32, length: u32) {
     dram_addr &= device::rdram::RDRAM_MASK as u32;
     cart_addr &= SRAM_MASK as u32;
     let mut i = dram_addr;
@@ -142,24 +139,24 @@ pub fn dma_read_sram(
     format_sram(device);
 
     while i < dram_addr + length && i < device.rdram.size {
-        device.ui.saves.sram.0[j as usize] = device.rdram.mem[i as usize ^ device.byte_swap];
+        device.ui.saves.sram.data[j as usize] = device.rdram.mem[i as usize ^ device.byte_swap];
         i += 1;
         j += 1;
     }
 
-    device.ui.saves.sram.1 = true
+    device.ui.saves.sram.written = true
 }
 
-pub fn dma_read_flash(device: &mut device::Device, cart_addr: u32, dram_addr: u32, length: u32) {
+fn dma_read_flash(device: &mut device::Device, cart_addr: u32, dram_addr: u32, length: u32) {
     format_flash(device);
 
     if (cart_addr & 0x1ffff) == 0x00000
         && length == 128
-        && device.flashram.mode == FlashramMode::PageProgram
+        && device.cart.flashram.mode == FlashramMode::PageProgram
     {
         /* load page buf using DMA */
         for i in 0..length {
-            device.flashram.page_buf[i as usize] =
+            device.cart.flashram.page_buf[i as usize] =
                 device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap];
         }
     } else {
@@ -178,7 +175,7 @@ pub fn dma_read(device: &mut device::Device, cart_addr: u32, dram_addr: u32, len
     device::pi::calculate_cycles(device, 2, length)
 }
 
-pub fn dma_write_sram(
+fn dma_write_sram(
     device: &mut device::Device,
     mut cart_addr: u32,
     mut dram_addr: u32,
@@ -192,13 +189,13 @@ pub fn dma_write_sram(
     format_sram(device);
 
     while i < dram_addr + length && i < device.rdram.size {
-        device.rdram.mem[i as usize ^ device.byte_swap] = device.ui.saves.sram.0[j as usize];
+        device.rdram.mem[i as usize ^ device.byte_swap] = device.ui.saves.sram.data[j as usize];
         i += 1;
         j += 1;
     }
 }
 
-pub fn dma_write_flash(
+fn dma_write_flash(
     device: &mut device::Device,
     mut cart_addr: u32,
     mut dram_addr: u32,
@@ -208,20 +205,22 @@ pub fn dma_write_flash(
 
     if (cart_addr & 0x1ffff) == 0x00000
         && length == 8
-        && device.flashram.mode == FlashramMode::ReadSiliconId
+        && device.cart.flashram.mode == FlashramMode::ReadSiliconId
     {
         /* read Silicon ID using DMA */
         device.rdram.mem[dram_addr as usize..dram_addr as usize + 4]
-            .copy_from_slice(&device.flashram.silicon_id[0].to_ne_bytes());
+            .copy_from_slice(&device.cart.flashram.silicon_id[0].to_ne_bytes());
         dram_addr += 4;
         device.rdram.mem[dram_addr as usize..dram_addr as usize + 4]
-            .copy_from_slice(&device.flashram.silicon_id[1].to_ne_bytes());
-    } else if (cart_addr & 0x1ffff) < 0x10000 && device.flashram.mode == FlashramMode::ReadArray {
+            .copy_from_slice(&device.cart.flashram.silicon_id[1].to_ne_bytes());
+    } else if (cart_addr & 0x1ffff) < 0x10000
+        && device.cart.flashram.mode == FlashramMode::ReadArray
+    {
         format_flash(device);
         /* adjust flashram address before starting DMA. */
-        if device.flashram.silicon_id[1] == MX29L1100_ID
-            || device.flashram.silicon_id[1] == MX29L0000_ID
-            || device.flashram.silicon_id[1] == MX29L0001_ID
+        if device.cart.flashram.silicon_id[1] == MX29L1100_ID
+            || device.cart.flashram.silicon_id[1] == MX29L0000_ID
+            || device.cart.flashram.silicon_id[1] == MX29L0001_ID
         {
             /* "old" flash needs special address adjusting */
             cart_addr = (cart_addr & 0xffff) * 2;
@@ -233,7 +232,7 @@ pub fn dma_write_flash(
         /* do actual DMA */
         for i in 0..length {
             device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap] =
-                device.ui.saves.flash.0[(cart_addr + i) as usize];
+                device.ui.saves.flash.data[(cart_addr + i) as usize];
         }
     } else {
         /* other accesses are not implemented */
@@ -251,81 +250,81 @@ pub fn dma_write(device: &mut device::Device, cart_addr: u32, dram_addr: u32, le
     device::pi::calculate_cycles(device, 2, length)
 }
 
-pub fn flashram_command(device: &mut device::Device, command: u32) {
+fn flashram_command(device: &mut device::Device, command: u32) {
     match command & 0xff000000 {
         0x3c000000 => {
             /* set chip erase mode */
-            device.flashram.mode = FlashramMode::ChipErase;
+            device.cart.flashram.mode = FlashramMode::ChipErase;
         }
 
         0x4b000000 => {
             /* set sector erase mode, set erase sector */
-            device.flashram.mode = FlashramMode::SectorErase;
-            device.flashram.erase_page = command as u16;
+            device.cart.flashram.mode = FlashramMode::SectorErase;
+            device.cart.flashram.erase_page = command as u16;
         }
 
         0x78000000 => {
             /* set erase busy flag */
-            device.flashram.status |= 0x02;
+            device.cart.flashram.status |= 0x02;
 
             /* do chip/sector erase */
-            if device.flashram.mode == FlashramMode::SectorErase {
-                let offset: usize = (device.flashram.erase_page & 0xff80) as usize * 128;
+            if device.cart.flashram.mode == FlashramMode::SectorErase {
+                let offset: usize = (device.cart.flashram.erase_page & 0xff80) as usize * 128;
                 for i in 0..128 * 128 {
-                    device.ui.saves.flash.0[offset + i] = 0xFF;
+                    device.ui.saves.flash.data[offset + i] = 0xFF;
                 }
-                device.ui.saves.flash.1 = true
-            } else if device.flashram.mode == FlashramMode::ChipErase {
+                device.ui.saves.flash.written = true
+            } else if device.cart.flashram.mode == FlashramMode::ChipErase {
                 for i in 0..FLASHRAM_SIZE {
-                    device.ui.saves.flash.0[i] = 0xFF;
+                    device.ui.saves.flash.data[i] = 0xFF;
                 }
-                device.ui.saves.flash.1 = true
+                device.ui.saves.flash.written = true
             } else {
                 panic!("Unexpected flash erase command")
             }
 
             /* clear erase busy flag, set erase success flag, transition to status mode */
-            device.flashram.status &= !0x02;
-            device.flashram.status |= 0x08;
-            device.flashram.mode = FlashramMode::Status;
+            device.cart.flashram.status &= !0x02;
+            device.cart.flashram.status |= 0x08;
+            device.cart.flashram.mode = FlashramMode::Status;
         }
 
         0xa5000000 => {
             /* set program busy flag */
-            device.flashram.status |= 0x01;
+            device.cart.flashram.status |= 0x01;
 
             /* program selected page */
             let offset: usize = (command & 0xffff) as usize * 128;
             for i in 0..128 {
-                device.ui.saves.flash.0[offset + i] = device.flashram.page_buf[i];
+                device.ui.saves.flash.data[offset + i] = device.cart.flashram.page_buf[i];
             }
-            device.ui.saves.flash.1 = true;
+            device.ui.saves.flash.written = true;
 
             /* clear program busy flag, set program success flag, transition to status mode */
-            device.flashram.status &= !0x01;
-            device.flashram.status |= 0x04;
-            device.flashram.mode = FlashramMode::Status;
+            device.cart.flashram.status &= !0x01;
+            device.cart.flashram.status |= 0x04;
+            device.cart.flashram.mode = FlashramMode::Status;
         }
 
         0xb4000000 => {
             /* set page program mode */
-            device.flashram.mode = FlashramMode::PageProgram;
+            device.cart.flashram.mode = FlashramMode::PageProgram;
         }
 
         0xd2000000 => {
             /* set status mode */
-            device.flashram.mode = FlashramMode::Status;
+            device.cart.flashram.mode = FlashramMode::Status;
         }
 
         0xe1000000 => {
             /* set silicon_id mode */
-            device.flashram.mode = FlashramMode::ReadSiliconId;
-            device.flashram.status |= 0x01; /* Needed for Pokemon Puzzle League */
+            device.cart.flashram.mode = FlashramMode::ReadSiliconId;
+            device.cart.flashram.status |= 0x01; /* Needed for Pokemon Puzzle League */
         }
 
         0xf0000000 => {
             /* set read mode */
-            device.flashram.mode = FlashramMode::ReadArray;
+            device.cart.flashram.mode = FlashramMode::ReadArray;
         }
 
         _ => {

src/device/controller.rs

@@ -1,31 +1,40 @@
-use crate::device;
-use crate::ui;
+use crate::{device, netplay, savestates, ui};
+
+pub mod mempak;
+pub mod rumble;
+pub mod transferpak;
+pub mod vru;
 
 pub const JCMD_STATUS: u8 = 0x00;
 pub const JCMD_CONTROLLER_READ: u8 = 0x01;
-pub const JCMD_PAK_READ: u8 = 0x02;
-pub const JCMD_PAK_WRITE: u8 = 0x03;
-//pub const JCMD_VRU_READ: u8 = 0x09;
-//pub const JCMD_VRU_WRITE: u8 = 0x0A;
-//pub const JCMD_VRU_READ_STATUS: u8 = 0x0B;
-//pub const JCMD_VRU_WRITE_CONFIG: u8 = 0x0C;
-//pub const JCMD_VRU_WRITE_INIT: u8 = 0x0D;
+const JCMD_PAK_READ: u8 = 0x02;
+const JCMD_PAK_WRITE: u8 = 0x03;
 pub const JCMD_RESET: u8 = 0xff;
 
-//pub const JDT_NONE: u16 = 0x0000;
-pub const JDT_JOY_ABS_COUNTERS: u16 = 0x0001; /* joystick with absolute coordinates */
-//pub const JDT_JOY_REL_COUNTERS: u16 = 0x0002; /* joystick with relative coordinates (= mouse) */
-pub const JDT_JOY_PORT: u16 = 0x0004; /* has port for external paks */
-//pub const JDT_VRU: u16 = 0x0100; /* VRU */
-pub const PAK_CHUNK_SIZE: usize = 0x20;
-pub const CONT_STATUS_PAK_NOT_PRESENT: u8 = 0;
-pub const CONT_STATUS_PAK_PRESENT: u8 = 1;
-pub const CONT_FLAVOR: u16 = JDT_JOY_ABS_COUNTERS | JDT_JOY_PORT;
+//const JDT_NONE: u16 = 0x0000;
+const JDT_JOY_ABS_COUNTERS: u16 = 0x0001; /* joystick with absolute coordinates */
+//const JDT_JOY_REL_COUNTERS: u16 = 0x0002; /* joystick with relative coordinates (= mouse) */
+const JDT_JOY_PORT: u16 = 0x0004; /* has port for external paks */
+const PAK_CHUNK_SIZE: usize = 0x20;
+const CONT_STATUS_PAK_PRESENT: u8 = 1;
+const CONT_STATUS_PAK_NOT_PRESENT: u8 = 2;
+const CONT_FLAVOR: u16 = JDT_JOY_ABS_COUNTERS | JDT_JOY_PORT;
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+pub enum PakType {
+    None = 0,
+    MemPak = 1,
+    RumblePak = 2,
+    TransferPak = 3,
+}
+
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct PakHandler {
+    #[serde(skip, default = "savestates::default_pak_handler")]
     pub read: fn(&mut device::Device, usize, u16, usize, usize),
+    #[serde(skip, default = "savestates::default_pak_handler")]
     pub write: fn(&mut device::Device, usize, u16, usize, usize),
+    pub pak_type: PakType,
 }
 
 pub fn process(device: &mut device::Device, channel: usize) {
@@ -46,8 +55,32 @@ pub fn process(device: &mut device::Device, channel: usize) {
         }
         JCMD_CONTROLLER_READ => {
             let offset = device.pif.channels[channel].rx_buf.unwrap();
-            let input = ui::input::get(&mut device.ui, channel);
-            device.pif.ram[offset..offset + 4].copy_from_slice(&input.to_ne_bytes());
+            let input = if device.netplay.is_none() {
+                ui::input::get(&mut device.ui, channel)
+            } else {
+                if device.netplay.as_ref().unwrap().player_number as usize == channel {
+                    let local_input = ui::input::get(&mut device.ui, 0);
+                    netplay::send_input(device.netplay.as_ref().unwrap(), local_input);
+                }
+
+                netplay::get_input(device, channel)
+            };
+
+            device.pif.ram[offset..offset + 4].copy_from_slice(&input.data.to_ne_bytes());
+            if input.pak_change_pressed {
+                // pak change button pressed
+                if device::events::get_event(device, device::events::EVENT_TYPE_PAK).is_none() {
+                    device.pif.channels[channel].change_pak =
+                        device.pif.channels[channel].pak_handler.unwrap().pak_type;
+                    device.pif.channels[channel].pak_handler = None;
+                    device::events::create_event(
+                        device,
+                        device::events::EVENT_TYPE_PAK,
+                        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize]
+                            + (device.cpu.clock_rate), // 1 second
+                    )
+                }
+            }
         }
         JCMD_PAK_READ => pak_read_block(
             device,
@@ -67,7 +100,7 @@ pub fn process(device: &mut device::Device, channel: usize) {
     }
 }
 
-pub fn pak_read_block(
+fn pak_read_block(
     device: &mut device::Device,
     addr_acrc: usize,
     data: usize,
@@ -80,13 +113,13 @@ pub fn pak_read_block(
 
     if handler.is_some() {
         (handler.unwrap().read)(device, channel, address, data, PAK_CHUNK_SIZE);
-        device.pif.ram[dcrc] = pak_data_crc(device, data, PAK_CHUNK_SIZE)
+        device.pif.ram[dcrc] = data_crc(device, data, PAK_CHUNK_SIZE)
     } else {
-        device.pif.ram[dcrc] = !pak_data_crc(device, data, PAK_CHUNK_SIZE)
+        device.pif.ram[dcrc] = !data_crc(device, data, PAK_CHUNK_SIZE)
     }
 }
 
-pub fn pak_write_block(
+fn pak_write_block(
     device: &mut device::Device,
     addr_acrc: usize,
     data: usize,
@@ -99,13 +132,13 @@ pub fn pak_write_block(
 
     if handler.is_some() {
         (handler.unwrap().write)(device, channel, address, data, PAK_CHUNK_SIZE);
-        device.pif.ram[dcrc] = pak_data_crc(device, data, PAK_CHUNK_SIZE)
+        device.pif.ram[dcrc] = data_crc(device, data, PAK_CHUNK_SIZE)
     } else {
-        device.pif.ram[dcrc] = !pak_data_crc(device, data, PAK_CHUNK_SIZE)
+        device.pif.ram[dcrc] = !data_crc(device, data, PAK_CHUNK_SIZE)
     }
 }
 
-pub fn pak_data_crc(device: &device::Device, data_offset: usize, size: usize) -> u8 {
+fn data_crc(device: &device::Device, data_offset: usize, size: usize) -> u8 {
     let mut i = 0;
     let mut crc = 0;
 
@@ -124,3 +157,46 @@ pub fn pak_data_crc(device: &device::Device, data_offset: usize, size: usize) ->
     }
     crc
 }
+
+pub fn pak_switch_event(device: &mut device::Device) {
+    for (i, channel) in device.pif.channels.iter_mut().enumerate() {
+        if channel.change_pak != PakType::None {
+            //stop rumble if it is on
+            if device.netplay.is_none() {
+                device::ui::input::set_rumble(&mut device.ui, i, 0);
+            } else if device.netplay.as_ref().unwrap().player_number as usize == i {
+                device::ui::input::set_rumble(&mut device.ui, 0, 0);
+            }
+
+            let new_pak_type = match channel.change_pak {
+                PakType::MemPak => PakType::RumblePak,
+                PakType::RumblePak => PakType::MemPak,
+                _ => {
+                    panic!("Invalid pak type");
+                }
+            };
+
+            if new_pak_type == PakType::MemPak {
+                channel.pak_handler = Some(device::controller::PakHandler {
+                    read: device::controller::mempak::read,
+                    write: device::controller::mempak::write,
+                    pak_type: new_pak_type,
+                });
+            } else if new_pak_type == PakType::RumblePak {
+                channel.pak_handler = Some(device::controller::PakHandler {
+                    read: device::controller::rumble::read,
+                    write: device::controller::rumble::write,
+                    pak_type: new_pak_type,
+                });
+            } else if new_pak_type == PakType::TransferPak {
+                channel.pak_handler = Some(device::controller::PakHandler {
+                    read: device::controller::transferpak::read,
+                    write: device::controller::transferpak::write,
+                    pak_type: new_pak_type,
+                });
+            }
+            ui::audio::play_pak_switch(&mut device.ui, new_pak_type);
+            channel.change_pak = PakType::None;
+        }
+    }
+}

src/device/controller/mempak.rs

@@ -1,11 +1,11 @@
 use crate::device;
 
 pub const MEMPAK_SIZE: usize = 0x8000;
-pub const MPK_PAGE_SIZE: usize = 256;
+const MPK_PAGE_SIZE: usize = 256;
 
-pub fn format_mempak(device: &mut device::Device) {
-    if device.ui.saves.mempak.0.len() < MEMPAK_SIZE * 4 {
-        device.ui.saves.mempak.0.resize(MEMPAK_SIZE * 4, 0);
+fn format_mempak(device: &mut device::Device) {
+    if device.ui.saves.mempak.data.len() < MEMPAK_SIZE * 4 {
+        device.ui.saves.mempak.data.resize(MEMPAK_SIZE * 4, 0);
 
         let page_0: [u8; MPK_PAGE_SIZE] = [
             /* Label area */
@@ -38,28 +38,28 @@ pub fn format_mempak(device: &mut device::Device) {
             let offset = i * MEMPAK_SIZE;
 
             /* Fill Page 0 with pre-initialized content */
-            device.ui.saves.mempak.0[offset..offset + MPK_PAGE_SIZE].copy_from_slice(&page_0);
+            device.ui.saves.mempak.data[offset..offset + MPK_PAGE_SIZE].copy_from_slice(&page_0);
 
             /* Fill INODE page 1 and update it's checkum */
             let start_page = 5;
             for i in MPK_PAGE_SIZE..2 * start_page {
-                device.ui.saves.mempak.0[offset + i] = 0;
+                device.ui.saves.mempak.data[offset + i] = 0;
             }
             for i in (MPK_PAGE_SIZE + 2 * start_page..2 * MPK_PAGE_SIZE).step_by(2) {
-                device.ui.saves.mempak.0[offset + i] = 0x00;
-                device.ui.saves.mempak.0[offset + i + 1] = 0x03;
+                device.ui.saves.mempak.data[offset + i] = 0x00;
+                device.ui.saves.mempak.data[offset + i + 1] = 0x03;
             }
-            device.ui.saves.mempak.0[offset + (MPK_PAGE_SIZE + 1)] = 0x71;
+            device.ui.saves.mempak.data[offset + (MPK_PAGE_SIZE + 1)] = 0x71;
 
             /* Page 2 is identical to page 1 */
             let page1 = offset + MPK_PAGE_SIZE;
             let page2 = offset + 2 * MPK_PAGE_SIZE;
-            let page1data = device.ui.saves.mempak.0[page1..page1 + MPK_PAGE_SIZE].to_vec();
-            device.ui.saves.mempak.0[page2..page2 + MPK_PAGE_SIZE].copy_from_slice(&page1data);
+            let page1data = device.ui.saves.mempak.data[page1..page1 + MPK_PAGE_SIZE].to_vec();
+            device.ui.saves.mempak.data[page2..page2 + MPK_PAGE_SIZE].copy_from_slice(&page1data);
 
             /* Remaining pages DIR+DATA (3...) are initialized with 0x00 */
             for i in 3 * MPK_PAGE_SIZE..MEMPAK_SIZE - 3 * MPK_PAGE_SIZE {
-                device.ui.saves.mempak.0[offset + i] = 0;
+                device.ui.saves.mempak.data[offset + i] = 0;
             }
         }
     }
@@ -71,7 +71,7 @@ pub fn read(device: &mut device::Device, channel: usize, address: u16, data: usi
 
         let offset = (channel * MEMPAK_SIZE) + address as usize;
         device.pif.ram[data..data + size]
-            .copy_from_slice(&device.ui.saves.mempak.0[offset..offset + size])
+            .copy_from_slice(&device.ui.saves.mempak.data[offset..offset + size])
     } else {
         for i in 0..size {
             device.pif.ram[data + i] = 0;
@@ -84,9 +84,9 @@ pub fn write(device: &mut device::Device, channel: usize, address: u16, data: us
         format_mempak(device);
 
         let offset = (channel * MEMPAK_SIZE) + address as usize;
-        device.ui.saves.mempak.0[offset..offset + size]
+        device.ui.saves.mempak.data[offset..offset + size]
             .copy_from_slice(&device.pif.ram[data..data + size]);
 
-        device.ui.saves.mempak.1 = true
+        device.ui.saves.mempak.written = true
     }
 }

src/device/controller/rumble.rs

@@ -0,0 +1,24 @@
+use crate::device;
+
+pub fn read(device: &mut device::Device, _channel: usize, address: u16, data: usize, size: usize) {
+    let value: u8 = if (0x8000..0x9000).contains(&address) {
+        0x80
+    } else {
+        0x00
+    };
+
+    for i in 0..size {
+        device.pif.ram[data + i] = value;
+    }
+}
+
+pub fn write(device: &mut device::Device, channel: usize, address: u16, data: usize, size: usize) {
+    if address == 0xc000 {
+        let rumble = device.pif.ram[data + size - 1];
+        if device.netplay.is_none() {
+            device::ui::input::set_rumble(&mut device.ui, channel, rumble);
+        } else if device.netplay.as_ref().unwrap().player_number as usize == channel {
+            device::ui::input::set_rumble(&mut device.ui, 0, rumble);
+        }
+    }
+}

src/device/controller/transferpak.rs

@@ -0,0 +1,19 @@
+use crate::device;
+
+pub fn read(
+    _device: &mut device::Device,
+    _channel: usize,
+    _address: u16,
+    _data: usize,
+    _size: usize,
+) {
+}
+
+pub fn write(
+    _device: &mut device::Device,
+    _channel: usize,
+    _address: u16,
+    _data: usize,
+    _size: usize,
+) {
+}

src/device/cop0.rs

@@ -1,37 +1,37 @@
-use crate::device;
+use crate::{device, savestates};
 
 pub const COP0_INDEX_REG: u32 = 0;
-pub const COP0_RANDOM_REG: u32 = 1;
+const COP0_RANDOM_REG: u32 = 1;
 pub const COP0_ENTRYLO0_REG: u32 = 2;
 pub const COP0_ENTRYLO1_REG: u32 = 3;
 pub const COP0_CONTEXT_REG: u32 = 4;
 pub const COP0_PAGEMASK_REG: u32 = 5;
-pub const COP0_WIRED_REG: u32 = 6;
-//pub const COP0_UNUSED_7: u32 = 7;
+const COP0_WIRED_REG: u32 = 6;
+//const COP0_UNUSED_7: u32 = 7;
 pub const COP0_BADVADDR_REG: u32 = 8;
 pub const COP0_COUNT_REG: u32 = 9;
 pub const COP0_ENTRYHI_REG: u32 = 10;
-pub const COP0_COMPARE_REG: u32 = 11;
+const COP0_COMPARE_REG: u32 = 11;
 pub const COP0_STATUS_REG: u32 = 12;
 pub const COP0_CAUSE_REG: u32 = 13;
 pub const COP0_EPC_REG: u32 = 14;
-pub const COP0_PREVID_REG: u32 = 15;
-pub const COP0_CONFIG_REG: u32 = 16;
+const COP0_PREVID_REG: u32 = 15;
+const COP0_CONFIG_REG: u32 = 16;
 pub const COP0_LLADDR_REG: u32 = 17;
-//pub const COP0_WATCHLO_REG: u32 = 18;
-//pub const COP0_WATCHHI_REG: u32 = 19;
+//const COP0_WATCHLO_REG: u32 = 18;
+//const COP0_WATCHHI_REG: u32 = 19;
 pub const COP0_XCONTEXT_REG: u32 = 20;
-//pub const COP0_UNUSED_21: u32 = 21;
-//pub const COP0_UNUSED_22: u32 = 22;
-//pub const COP0_UNUSED_23: u32 = 23;
-//pub const COP0_UNUSED_24: u32 = 24;
-//pub const COP0_UNUSED_25: u32 = 25;
-//pub const COP0_PARITYERR_REG: u32 = 26;
-//pub const COP0_CACHEERR_REG: u32 = 27;
+//const COP0_UNUSED_21: u32 = 21;
+//const COP0_UNUSED_22: u32 = 22;
+//const COP0_UNUSED_23: u32 = 23;
+//const COP0_UNUSED_24: u32 = 24;
+//const COP0_UNUSED_25: u32 = 25;
+//const COP0_PARITYERR_REG: u32 = 26;
+//const COP0_CACHEERR_REG: u32 = 27;
 pub const COP0_TAGLO_REG: u32 = 28;
-//pub const COP0_TAGHI_REG: u32 = 29;
-pub const COP0_ERROREPC_REG: u32 = 30;
-//pub const COP0_UNUSED_31: u32 = 31;
+//const COP0_TAGHI_REG: u32 = 29;
+const COP0_ERROREPC_REG: u32 = 30;
+//const COP0_UNUSED_31: u32 = 31;
 pub const COP0_REGS_COUNT: u32 = 32;
 
 pub const COP0_STATUS_IE: u64 = 1 << 0;
@@ -42,12 +42,12 @@ pub const COP0_STATUS_FR: u64 = 1 << 26;
 pub const COP0_STATUS_CU1: u64 = 1 << 29;
 pub const COP0_STATUS_CU2: u64 = 1 << 30;
 
-//pub const COP0_CAUSE_EXCCODE_INTR: u64 = 0 << 2;
+//const COP0_CAUSE_EXCCODE_INTR: u64 = 0 << 2;
 pub const COP0_CAUSE_EXCCODE_MOD: u64 = 1 << 2;
 pub const COP0_CAUSE_EXCCODE_TLBL: u64 = 2 << 2;
 pub const COP0_CAUSE_EXCCODE_TLBS: u64 = 3 << 2;
-//pub const COP0_CAUSE_EXCCODE_ADEL: u64 = 4 << 2;
-//pub const COP0_CAUSE_EXCCODE_ADES: u64 = 5 << 2;
+//const COP0_CAUSE_EXCCODE_ADEL: u64 = 4 << 2;
+//const COP0_CAUSE_EXCCODE_ADES: u64 = 5 << 2;
 pub const COP0_CAUSE_EXCCODE_SYS: u64 = 8 << 2;
 pub const COP0_CAUSE_EXCCODE_BP: u64 = 9 << 2;
 pub const COP0_CAUSE_EXCCODE_RI: u64 = 10 << 2;
@@ -62,7 +62,7 @@ pub const COP0_CAUSE_CE1: u64 = 1 << 28;
 pub const COP0_CAUSE_CE2: u64 = 1 << 29;
 
 pub const COP0_CAUSE_IP_MASK: u64 = 0b00000000000000001111111100000000;
-pub const COP0_CAUSE_EXCCODE_MASK: u64 = 0x1F << 2;
+//pub const COP0_CAUSE_EXCCODE_MASK: u64 = 0x1F << 2;
 pub const COP0_CONTEXT_BADVPN2_MASK: u64 = 0b00000000011111111111111111110000;
 pub const COP0_XCONTEXT_BADVPN2_MASK: u64 = 0b01111111111111111111111111110000;
 pub const COP0_XCONTEXT_REGION_MASK: u64 = 0b110000000000000000000000000000000;
@@ -88,29 +88,34 @@ const COP0_XCONTEXT_REG_MASK: u64 =
 const COP0_PARITYERR_REG_MASK: u64 = 0b00000000000000000000000011111111;
 const COP0_TAGLO_REG_MASK: u64 = 0b00001111111111111111111111000000;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Cop0 {
     pub reg_latch: u64,
     pub regs: [u64; COP0_REGS_COUNT as usize],
     pub reg_write_masks: [u64; COP0_REGS_COUNT as usize],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs2: [fn(&mut device::Device, u32); 32],
     pub tlb_lut_r: Vec<device::tlb::TlbLut>,
     pub tlb_lut_w: Vec<device::tlb::TlbLut>,
     pub tlb_entries: [device::tlb::TlbEntry; 32],
+    pub is_event: bool,
+    pub pending_compare_interrupt: bool,
 }
 
-pub fn mfc0(device: &mut device::Device, opcode: u32) {
+fn mfc0(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] = device::cpu_instructions::se32(
         (get_control_registers(device, device::cpu_instructions::rd(opcode))) as u32 as i32,
     )
 }
 
-pub fn dmfc0(device: &mut device::Device, opcode: u32) {
+fn dmfc0(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] =
         get_control_registers(device, device::cpu_instructions::rd(opcode))
 }
 
-pub fn mtc0(device: &mut device::Device, opcode: u32) {
+fn mtc0(device: &mut device::Device, opcode: u32) {
     device::cop0::set_control_registers(
         device,
         device::cpu_instructions::rd(opcode),
@@ -120,7 +125,7 @@ pub fn mtc0(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dmtc0(device: &mut device::Device, opcode: u32) {
+fn dmtc0(device: &mut device::Device, opcode: u32) {
     device::cop0::set_control_registers(
         device,
         device::cpu_instructions::rd(opcode),
@@ -128,24 +133,24 @@ pub fn dmtc0(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn tlbr(device: &mut device::Device, _opcode: u32) {
+fn tlbr(device: &mut device::Device, _opcode: u32) {
     device::tlb::read(device, device.cpu.cop0.regs[COP0_INDEX_REG as usize])
 }
 
-pub fn tlbwi(device: &mut device::Device, _opcode: u32) {
+fn tlbwi(device: &mut device::Device, _opcode: u32) {
     device::tlb::write(device, device.cpu.cop0.regs[COP0_INDEX_REG as usize])
 }
 
-pub fn tlbwr(device: &mut device::Device, _opcode: u32) {
+fn tlbwr(device: &mut device::Device, _opcode: u32) {
     let random = set_random_register(device);
     device::tlb::write(device, random)
 }
 
-pub fn tlbp(device: &mut device::Device, _opcode: u32) {
+fn tlbp(device: &mut device::Device, _opcode: u32) {
     device::tlb::probe(device)
 }
 
-pub fn eret(device: &mut device::Device, _opcode: u32) {
+fn eret(device: &mut device::Device, _opcode: u32) {
     if device.cpu.cop0.regs[COP0_STATUS_REG as usize] & COP0_STATUS_ERL != 0 {
         device.cpu.pc = device.cpu.cop0.regs[COP0_ERROREPC_REG as usize];
         device.cpu.cop0.regs[COP0_STATUS_REG as usize] &= !COP0_STATUS_ERL
@@ -158,7 +163,7 @@ pub fn eret(device: &mut device::Device, _opcode: u32) {
     device::exceptions::check_pending_interrupts(device)
 }
 
-pub fn execute_cp0(device: &mut device::Device, opcode: u32) {
+fn execute_cp0(device: &mut device::Device, opcode: u32) {
     device.cpu.cop0.instrs2[(opcode & 0x3F) as usize](device, opcode)
 }
 
@@ -174,7 +179,7 @@ pub fn reserved(device: &mut device::Device, _opcode: u32) {
     device::exceptions::reserved_exception(device, 0);
 }
 
-pub fn get_control_registers(device: &device::Device, index: u32) -> u64 {
+fn get_control_registers(device: &device::Device, index: u32) -> u64 {
     match index {
         COP0_COUNT_REG => device.cpu.cop0.regs[index as usize] >> 1,
         COP0_RANDOM_REG => set_random_register(device),
@@ -183,7 +188,7 @@ pub fn get_control_registers(device: &device::Device, index: u32) -> u64 {
     }
 }
 
-pub fn set_control_registers(device: &mut device::Device, index: u32, mut data: u64) {
+fn set_control_registers(device: &mut device::Device, index: u32, mut data: u64) {
     device.cpu.cop0.reg_latch = data;
     match index {
         COP0_COUNT_REG => {
@@ -209,11 +214,11 @@ pub fn set_control_registers(device: &mut device::Device, index: u32, mut data:
 
             device::events::create_event(
                 device,
-                device::events::EventType::Compare,
+                device::events::EVENT_TYPE_COMPARE,
                 device.cpu.cop0.regs[COP0_COUNT_REG as usize] + ((compare_event_diff as u64) << 1),
-                compare_event,
             );
             device.cpu.cop0.regs[COP0_CAUSE_REG as usize] &= !COP0_CAUSE_IP7;
+            device.cpu.cop0.pending_compare_interrupt = false;
         }
         COP0_STATUS_REG => {
             if data & COP0_STATUS_FR != device.cpu.cop0.regs[index as usize] & COP0_STATUS_FR {
@@ -231,19 +236,16 @@ pub fn set_control_registers(device: &mut device::Device, index: u32, mut data:
 }
 
 pub fn compare_event(device: &mut device::Device) {
-    device.cpu.cop0.regs[COP0_CAUSE_REG as usize] &= !COP0_CAUSE_EXCCODE_MASK;
-    device.cpu.cop0.regs[COP0_CAUSE_REG as usize] |= COP0_CAUSE_IP7;
-
+    device.cpu.cop0.pending_compare_interrupt = true;
     device::events::create_event(
         device,
-        device::events::EventType::Compare,
+        device::events::EVENT_TYPE_COMPARE,
         device.cpu.next_event_count + (u32::MAX as u64),
-        compare_event,
     );
     device::exceptions::check_pending_interrupts(device);
 }
 
-pub fn set_random_register(device: &device::Device) -> u64 {
+fn set_random_register(device: &device::Device) -> u64 {
     if device.cpu.cop0.regs[COP0_WIRED_REG as usize] > 31 {
         (u64::MAX - device.cpu.cop0.regs[COP0_COUNT_REG as usize]) & 0x3F
     } else {
@@ -257,42 +259,7 @@ pub fn add_cycles(device: &mut device::Device, cycles: u64) {
     device.cpu.cop0.regs[COP0_COUNT_REG as usize] += cycles // COUNT_REG is shifted right 1 bit when read by MFC0
 }
 
-pub fn init(device: &mut device::Device) {
-    device.cpu.cop0.reg_write_masks = [
-        COP0_INDEX_REG_MASK,
-        0, // Random, read only
-        COP0_ENTRYLO_REG_MASK,
-        COP0_ENTRYLO_REG_MASK,
-        COP0_CONTEXT_REG_MASK,
-        COP0_PAGEMASK_REG_MASK,
-        COP0_WIRED_REG_MASK,
-        0,               // 7
-        0,               // BadVAddr, read only
-        u32::MAX as u64, // count
-        COP0_ENTRYHI_REG_MASK,
-        u32::MAX as u64, // compare
-        COP0_STATUS_REG_MASK,
-        COP0_CAUSE_REG_MASK,
-        u64::MAX, // EPC
-        0,        // previd, read only
-        COP0_CONFIG_REG_MASK,
-        COP0_LLADDR_REG_MASK,
-        COP0_WATCHLO_REG_MASK,
-        COP0_WATCHHI_REG_MASK,
-        COP0_XCONTEXT_REG_MASK,
-        0, // 21
-        0, // 22
-        0, // 23
-        0, // 24
-        0, // 25
-        COP0_PARITYERR_REG_MASK,
-        0, // cache error
-        COP0_TAGLO_REG_MASK,
-        0,        // taghi
-        u64::MAX, // ErrorPC
-        0,        // 31
-    ];
-
+pub fn map_instructions(device: &mut device::Device) {
     device.cpu.cop0.instrs = [
         device::cop0::mfc0,        // 0
         device::cop0::dmfc0,       // 1
@@ -362,6 +329,46 @@ pub fn init(device: &mut device::Device) {
         device::cop0::reserved, // 30
         device::cop0::reserved, // 31
     ];
+}
+
+pub fn init(device: &mut device::Device) {
+    device.cpu.cop0.reg_write_masks = [
+        COP0_INDEX_REG_MASK,
+        0, // Random, read only
+        COP0_ENTRYLO_REG_MASK,
+        COP0_ENTRYLO_REG_MASK,
+        COP0_CONTEXT_REG_MASK,
+        COP0_PAGEMASK_REG_MASK,
+        COP0_WIRED_REG_MASK,
+        0,               // 7
+        0,               // BadVAddr, read only
+        u32::MAX as u64, // count
+        COP0_ENTRYHI_REG_MASK,
+        u32::MAX as u64, // compare
+        COP0_STATUS_REG_MASK,
+        COP0_CAUSE_REG_MASK,
+        u64::MAX, // EPC
+        0,        // previd, read only
+        COP0_CONFIG_REG_MASK,
+        COP0_LLADDR_REG_MASK,
+        COP0_WATCHLO_REG_MASK,
+        COP0_WATCHHI_REG_MASK,
+        COP0_XCONTEXT_REG_MASK,
+        0, // 21
+        0, // 22
+        0, // 23
+        0, // 24
+        0, // 25
+        COP0_PARITYERR_REG_MASK,
+        0, // cache error
+        COP0_TAGLO_REG_MASK,
+        0,        // taghi
+        u64::MAX, // ErrorPC
+        0,        // 31
+    ];
+
+    map_instructions(device);
+
     // taken from VR4300 manual
     device.cpu.cop0.regs[COP0_RANDOM_REG as usize] = 0b00000000000000000000000000011111;
     device.cpu.cop0.regs[COP0_CONFIG_REG as usize] = 0b01110000000001101110010001100000;
@@ -372,10 +379,5 @@ pub fn init(device: &mut device::Device) {
     device.cpu.cop0.regs[COP0_BADVADDR_REG as usize] = 0xFFFFFFFF;
     device.cpu.cop0.regs[COP0_CONTEXT_REG as usize] = 0x7FFFF0;
 
-    device::events::create_event(
-        device,
-        device::events::EventType::Compare,
-        u32::MAX as u64,
-        compare_event,
-    )
+    device::events::create_event(device, device::events::EVENT_TYPE_COMPARE, u32::MAX as u64)
 }

src/device/cop1.rs

@@ -1,39 +1,48 @@
-use crate::device;
+use crate::{device, savestates};
 
-//pub const FCR31_FLAG_INEXACT_BIT: u32 = 1 << 2;
-//pub const FCR31_FLAG_UNDERFLOW_BIT: u32 = 1 << 3;
-//pub const FCR31_FLAG_OVERFLOW_BIT: u32 = 1 << 4;
-//pub const FCR31_FLAG_DIVBYZERO_BIT: u32 = 1 << 5;
-//pub const FCR31_FLAG_INVALID_BIT: u32 = 1 << 6;
-//pub const FCR31_ENABLE_INEXACT_BIT: u32 = 1 << 7;
-//pub const FCR31_ENABLE_UNDERFLOW_BIT: u32 = 1 << 8;
-//pub const FCR31_ENABLE_OVERFLOW_BIT: u32 = 1 << 9;
-//pub const FCR31_ENABLE_DIVBYZERO_BIT: u32 = 1 << 10;
-//pub const FCR31_ENABLE_INVALID_BIT: u32 = 1 << 11;
-//pub const FCR31_CAUSE_INEXACT_BIT: u32 = 1 << 12;
-//pub const FCR31_CAUSE_UNDERFLOW_BIT: u32 = 1 << 13;
-//pub const FCR31_CAUSE_OVERFLOW_BIT: u32 = 1 << 14;
-//pub const FCR31_CAUSE_DIVBYZERO_BIT: u32 = 1 << 15;
-//pub const FCR31_CAUSE_INVALID_BIT: u32 = 1 << 16;
-pub const FCR31_CAUSE_UNIMP_BIT: u32 = 1 << 17;
+//const FCR31_FLAG_INEXACT_BIT: u32 = 1 << 2;
+//const FCR31_FLAG_UNDERFLOW_BIT: u32 = 1 << 3;
+//const FCR31_FLAG_OVERFLOW_BIT: u32 = 1 << 4;
+//const FCR31_FLAG_DIVBYZERO_BIT: u32 = 1 << 5;
+//const FCR31_FLAG_INVALID_BIT: u32 = 1 << 6;
+//const FCR31_ENABLE_INEXACT_BIT: u32 = 1 << 7;
+//const FCR31_ENABLE_UNDERFLOW_BIT: u32 = 1 << 8;
+//const FCR31_ENABLE_OVERFLOW_BIT: u32 = 1 << 9;
+//const FCR31_ENABLE_DIVBYZERO_BIT: u32 = 1 << 10;
+//const FCR31_ENABLE_INVALID_BIT: u32 = 1 << 11;
+//const FCR31_CAUSE_INEXACT_BIT: u32 = 1 << 12;
+//const FCR31_CAUSE_UNDERFLOW_BIT: u32 = 1 << 13;
+//const FCR31_CAUSE_OVERFLOW_BIT: u32 = 1 << 14;
+//const FCR31_CAUSE_DIVBYZERO_BIT: u32 = 1 << 15;
+//const FCR31_CAUSE_INVALID_BIT: u32 = 1 << 16;
+const FCR31_CAUSE_UNIMP_BIT: u32 = 1 << 17;
 pub const FCR31_CMP_BIT: u32 = 1 << 23;
-pub const FCR31_FS_BIT: u32 = 1 << 24;
+//#[cfg(target_arch = "x86_64")]
+//const FCR31_FS_BIT: u32 = 1 << 24;
 
-pub const FCR31_CAUSE_MASK: u32 = 0b00000000000000111111000000000000;
-pub const FCR31_ENABLE_MASK: u32 = 0b00000000000000000000111110000000;
-pub const FCR31_WRITE_MASK: u32 = 0b00000001100000111111111111111111;
+const FCR31_CAUSE_MASK: u32 = 0b00000000000000111111000000000000;
+const FCR31_ENABLE_MASK: u32 = 0b00000000000000000000111110000000;
+const FCR31_WRITE_MASK: u32 = 0b00000001100000111111111111111111;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Cop1 {
     pub fcr0: u32,
     pub fcr31: u32,
-    pub flush_mode: u32,
+    //#[cfg(target_arch = "x86_64")]
+    //pub flush_mode: u32,
     pub fgr32: [[u8; 4]; 32],
     pub fgr64: [[u8; 8]; 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub b_instrs: [fn(&mut device::Device, u32); 4],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub s_instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub d_instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub w_instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub l_instrs: [fn(&mut device::Device, u32); 64],
 }
 
@@ -171,7 +180,7 @@ pub fn sdc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn mfc1(device: &mut device::Device, opcode: u32) {
+fn mfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -183,7 +192,7 @@ pub fn mfc1(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32(u32::from_ne_bytes(value.to_ne_bytes()) as i32);
 }
 
-pub fn dmfc1(device: &mut device::Device, opcode: u32) {
+fn dmfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -195,7 +204,7 @@ pub fn dmfc1(device: &mut device::Device, opcode: u32) {
         u64::from_ne_bytes(value.to_ne_bytes());
 }
 
-pub fn cfc1(device: &mut device::Device, opcode: u32) {
+fn cfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -207,7 +216,7 @@ pub fn cfc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dcfc1(device: &mut device::Device, opcode: u32) {
+fn dcfc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -219,7 +228,7 @@ pub fn dcfc1(device: &mut device::Device, opcode: u32) {
     device::exceptions::floating_point_exception(device)
 }
 
-pub fn mtc1(device: &mut device::Device, opcode: u32) {
+fn mtc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -237,7 +246,7 @@ pub fn mtc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dmtc1(device: &mut device::Device, opcode: u32) {
+fn dmtc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -250,7 +259,7 @@ pub fn dmtc1(device: &mut device::Device, opcode: u32) {
     set_fpr_double(device, device::fpu_instructions::fs(opcode) as usize, value)
 }
 
-pub fn ctc1(device: &mut device::Device, opcode: u32) {
+fn ctc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -264,7 +273,7 @@ pub fn ctc1(device: &mut device::Device, opcode: u32) {
     )
 }
 
-pub fn dctc1(device: &mut device::Device, opcode: u32) {
+fn dctc1(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -276,7 +285,7 @@ pub fn dctc1(device: &mut device::Device, opcode: u32) {
     device::exceptions::floating_point_exception(device)
 }
 
-pub fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -286,7 +295,7 @@ pub fn execute_cop1_b(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.b_instrs[((opcode >> 16) & 0x3) as usize](device, opcode)
 }
 
-pub fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -296,7 +305,7 @@ pub fn execute_cop1_s(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.s_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -306,7 +315,7 @@ pub fn execute_cop1_d(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.d_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -316,7 +325,7 @@ pub fn execute_cop1_l(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.l_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
+fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU1
         == 0
     {
@@ -326,7 +335,7 @@ pub fn execute_cop1_w(device: &mut device::Device, opcode: u32) {
     device.cpu.cop1.w_instrs[(opcode & 0x3F) as usize](device, opcode)
 }
 
-pub fn unusable(device: &mut device::Device, _opcode: u32) {
+fn unusable(device: &mut device::Device, _opcode: u32) {
     device::exceptions::cop_unusable_exception(device, device::cop0::COP0_CAUSE_CE1)
 }
 
@@ -340,7 +349,7 @@ pub fn reserved(device: &mut device::Device, opcode: u32) {
     device::exceptions::reserved_exception(device, device::cop0::COP0_CAUSE_CE1);
 }
 
-pub fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
+fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
     match index {
         0 => device.cpu.cop1.fcr0,
         31 => device.cpu.cop1.fcr31,
@@ -350,7 +359,7 @@ pub fn get_control_registers_fpu(device: &device::Device, index: u32) -> u32 {
     }
 }
 
-pub fn set_control_registers_fpu(device: &mut device::Device, index: u32, data: u32) {
+fn set_control_registers_fpu(device: &mut device::Device, index: u32, data: u32) {
     match index {
         0 => { // read only
         }
@@ -366,8 +375,9 @@ pub fn set_control_registers_fpu(device: &mut device::Device, index: u32, data:
             {
                 device::exceptions::floating_point_exception(device)
             }
-
-            unsafe {
+            /*
+            #[cfg(target_arch = "x86_64")]
+            {
                 let flush_mode;
                 if (device.cpu.cop1.fcr31 & 2) != 0 {
                     if (device.cpu.cop1.fcr31 & FCR31_FS_BIT) != 0 {
@@ -380,10 +390,13 @@ pub fn set_control_registers_fpu(device: &mut device::Device, index: u32, data:
                 }
                 if flush_mode != device.cpu.cop1.flush_mode {
                     #[allow(deprecated)]
-                    std::arch::x86_64::_MM_SET_FLUSH_ZERO_MODE(flush_mode);
+                    unsafe {
+                        std::arch::x86_64::_MM_SET_FLUSH_ZERO_MODE(flush_mode)
+                    };
                     device.cpu.cop1.flush_mode = flush_mode;
                 }
             }
+            */
         }
         _ => {
             panic!("unknown FCR register")
@@ -442,10 +455,7 @@ pub fn get_fpr_double(device: &device::Device, index: usize) -> f64 {
     }
 }
 
-pub fn init(device: &mut device::Device) {
-    set_fgr_registers(device, 0);
-    device.cpu.cop1.fcr0 = 0b101000000000;
-
+pub fn map_instructions(device: &mut device::Device) {
     device.cpu.cop1.b_instrs = [
         device::fpu_instructions::bc1f,  // 0
         device::fpu_instructions::bc1t,  // 1
@@ -757,6 +767,13 @@ pub fn init(device: &mut device::Device) {
     ]
 }
 
+pub fn init(device: &mut device::Device) {
+    set_fgr_registers(device, 0);
+    device.cpu.cop1.fcr0 = 0b101000000000;
+
+    map_instructions(device);
+}
+
 pub fn set_fgr_registers(device: &mut device::Device, status_reg: u64) {
     // this method doesn't account for undocumented behaviour (accessing odd numbered registers in half mode)
     if (status_reg & device::cop0::COP0_STATUS_FR) == 0 {

src/device/cop2.rs

@@ -1,11 +1,13 @@
-use crate::device;
+use crate::{device, savestates};
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Cop2 {
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs: [fn(&mut device::Device, u32); 32],
     pub reg_latch: u64,
 }
 
-pub fn mfc2(device: &mut device::Device, opcode: u32) {
+fn mfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -15,7 +17,7 @@ pub fn mfc2(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32((device.cpu.cop2.reg_latch) as u32 as i32)
 }
 
-pub fn dmfc2(device: &mut device::Device, opcode: u32) {
+fn dmfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -24,7 +26,7 @@ pub fn dmfc2(device: &mut device::Device, opcode: u32) {
     device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize] = device.cpu.cop2.reg_latch
 }
 
-pub fn cfc2(device: &mut device::Device, opcode: u32) {
+fn cfc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -34,7 +36,7 @@ pub fn cfc2(device: &mut device::Device, opcode: u32) {
         device::cpu_instructions::se32((device.cpu.cop2.reg_latch) as u32 as i32)
 }
 
-pub fn mtc2(device: &mut device::Device, opcode: u32) {
+fn mtc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -43,7 +45,7 @@ pub fn mtc2(device: &mut device::Device, opcode: u32) {
     device.cpu.cop2.reg_latch = device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize]
 }
 
-pub fn dmtc2(device: &mut device::Device, opcode: u32) {
+fn dmtc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -52,7 +54,7 @@ pub fn dmtc2(device: &mut device::Device, opcode: u32) {
     device.cpu.cop2.reg_latch = device.cpu.gpr[device::cpu_instructions::rt(opcode) as usize]
 }
 
-pub fn ctc2(device: &mut device::Device, opcode: u32) {
+fn ctc2(device: &mut device::Device, opcode: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_CU2
         == 0
     {
@@ -72,11 +74,11 @@ pub fn reserved(device: &mut device::Device, opcode: u32) {
     device::exceptions::reserved_exception(device, device::cop0::COP0_CAUSE_CE2);
 }
 
-pub fn unusable(device: &mut device::Device, _opcode: u32) {
+fn unusable(device: &mut device::Device, _opcode: u32) {
     device::exceptions::cop_unusable_exception(device, device::cop0::COP0_CAUSE_CE2)
 }
 
-pub fn init(device: &mut device::Device) {
+pub fn map_instructions(device: &mut device::Device) {
     device.cpu.cop2.instrs = [
         device::cop2::mfc2,     // 0
         device::cop2::dmfc2,    // 1
@@ -112,3 +114,7 @@ pub fn init(device: &mut device::Device) {
         device::cop2::reserved, // 31
     ]
 }
+
+pub fn init(device: &mut device::Device) {
+    map_instructions(device);
+}

src/device/cpu.rs

@@ -1,6 +1,6 @@
-use crate::device;
+use crate::{device, savestates};
 
-#[derive(PartialEq)]
+#[derive(PartialEq, serde::Serialize, serde::Deserialize)]
 pub enum State {
     Step,
     Take,
@@ -11,10 +11,13 @@ pub enum State {
     Exception,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct BranchState {
     pub state: State,
     pub pc: u64,
 }
+
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Cpu {
     pub cop0: device::cop0::Cop0,
     pub cop1: device::cop1::Cop1,
@@ -28,10 +31,13 @@ pub struct Cpu {
     pub running: bool,
     pub llbit: bool,
     pub clock_rate: u64,
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub special_instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub regimm_instrs: [fn(&mut device::Device, u32); 32],
-    pub events: [device::events::Event; device::events::EventType::Count as usize],
+    pub events: [device::events::Event; device::events::EVENT_TYPE_COUNT],
     pub next_event_count: u64,
     pub next_event: usize,
 }
@@ -47,9 +53,7 @@ pub fn decode_opcode(device: &device::Device, opcode: u32) -> fn(&mut device::De
     }
 }
 
-pub fn init(device: &mut device::Device) {
-    device.cpu.clock_rate = 93750000;
-
+pub fn map_instructions(device: &mut device::Device) {
     device.cpu.instrs = [
         device::cop0::reserved,           // SPECIAL
         device::cop0::reserved,           // REGIMM
@@ -216,6 +220,13 @@ pub fn init(device: &mut device::Device) {
         device::cop0::reserved,            // 30
         device::cop0::reserved,            // 31
     ];
+}
+
+pub fn init(device: &mut device::Device) {
+    device.cpu.clock_rate = 93750000;
+
+    map_instructions(device);
+
     device::cop0::init(device);
     device::cop1::init(device);
     device::cop2::init(device);

src/device/cpu_instructions.rs

@@ -12,7 +12,7 @@ pub fn rt(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn sa(opcode: u32) -> u32 {
+fn sa(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 
@@ -28,23 +28,23 @@ pub fn se16(value: i16) -> u64 {
     value as i64 as u64
 }
 
-pub fn se8(value: i8) -> u64 {
+fn se8(value: i8) -> u64 {
     value as i64 as u64
 }
 
-pub fn bshift<T: Into<u64>>(address: T) -> u64 {
+fn bshift<T: Into<u64>>(address: T) -> u64 {
     ((address.into() & 3) ^ 3) << 3
 }
 
-pub fn hshift<T: Into<u64>>(address: T) -> u64 {
+fn hshift<T: Into<u64>>(address: T) -> u64 {
     ((address.into() & 2) ^ 2) << 3
 }
 
-pub fn bits_below_mask<T: Into<u64>>(x: T) -> u64 {
+fn bits_below_mask<T: Into<u64>>(x: T) -> u64 {
     (1 << x.into()) - 1
 }
 
-pub fn bits_above_mask<T: Into<u64>>(x: T) -> u64 {
+fn bits_above_mask<T: Into<u64>>(x: T) -> u64 {
     !bits_below_mask(x)
 }
 
@@ -60,8 +60,8 @@ pub fn check_relative_idle_loop(device: &mut device::Device, opcode: u32) {
     }
 }
 
-pub fn check_absolute_idle_loop(device: &mut device::Device, opcode: u32) {
-    if (opcode & 0x3FFFFFF) as u64 == (device.cpu.pc_phys & 0x0FFFFFFF) >> 2
+fn check_absolute_idle_loop(device: &mut device::Device, target: u64) {
+    if device.cpu.pc == target
         && device.memory.fast_read[(device.cpu.pc_phys >> 16) as usize](
             device,
             device.cpu.pc_phys + 4,
@@ -76,10 +76,10 @@ pub fn j(device: &mut device::Device, opcode: u32) {
     if device::cpu::in_delay_slot_taken(device) {
         return;
     }
-    check_absolute_idle_loop(device, opcode);
+    let target = (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64;
+    check_absolute_idle_loop(device, target);
     device.cpu.branch_state.state = device::cpu::State::Take;
-    device.cpu.branch_state.pc =
-        (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64
+    device.cpu.branch_state.pc = target
 }
 
 pub fn jal(device: &mut device::Device, opcode: u32) {
@@ -89,10 +89,10 @@ pub fn jal(device: &mut device::Device, opcode: u32) {
         device.cpu.gpr[31] = device.cpu.pc + 8
     }
     if !device::cpu::in_delay_slot_taken(device) {
-        check_absolute_idle_loop(device, opcode);
+        let target = (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64;
+        check_absolute_idle_loop(device, target);
         device.cpu.branch_state.state = device::cpu::State::Take;
-        device.cpu.branch_state.pc =
-            (device.cpu.pc + 4) & 0xFFFFFFFFF0000000 | ((opcode & 0x3FFFFFF) << 2) as u64
+        device.cpu.branch_state.pc = target
     } else if !device::cpu::in_delay_slot(device) {
         device.cpu.branch_state.state = device::cpu::State::NotTaken;
     }
@@ -966,7 +966,6 @@ pub fn srav(device: &mut device::Device, opcode: u32) {
 
 pub fn jr(device: &mut device::Device, opcode: u32) {
     if !device::cpu::in_delay_slot_taken(device) {
-        check_relative_idle_loop(device, opcode);
         device.cpu.branch_state.state = device::cpu::State::Take;
         device.cpu.branch_state.pc = device.cpu.gpr[rs(opcode) as usize];
     } else if !device::cpu::in_delay_slot(device) {
@@ -978,7 +977,6 @@ pub fn jalr(device: &mut device::Device, opcode: u32) {
     let in_delay_slot_taken = device::cpu::in_delay_slot_taken(device);
 
     if !in_delay_slot_taken {
-        check_relative_idle_loop(device, opcode);
         device.cpu.branch_state.state = device::cpu::State::Take;
         device.cpu.branch_state.pc = device.cpu.gpr[rs(opcode) as usize];
     } else if !device::cpu::in_delay_slot(device) {

src/device/events.rs

@@ -1,61 +1,73 @@
 use crate::device;
 
-#[derive(PartialEq, Copy, Clone)]
-pub enum EventType {
-    AI,
-    SI,
-    VI,
-    PI,
-    DP,
-    SP,
-    InterruptCheck,
-    SPDma,
-    Compare,
-    Count,
-}
+pub const EVENT_TYPE_NONE: usize = 0;
+pub const EVENT_TYPE_AI: usize = 1;
+pub const EVENT_TYPE_SI: usize = 2;
+pub const EVENT_TYPE_VI: usize = 3;
+pub const EVENT_TYPE_PI: usize = 4;
+pub const EVENT_TYPE_DP: usize = 5;
+pub const EVENT_TYPE_SP: usize = 6;
+pub const EVENT_TYPE_INT: usize = 7;
+pub const EVENT_TYPE_SPDMA: usize = 8;
+pub const EVENT_TYPE_COMPARE: usize = 9;
+pub const EVENT_TYPE_VRU: usize = 10;
+pub const EVENT_TYPE_PAK: usize = 11;
+pub const EVENT_TYPE_COUNT: usize = 12;
 
-#[derive(PartialEq, Copy, Clone)]
+#[derive(PartialEq, Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct Event {
     pub enabled: bool,
     pub count: u64,
-    pub handler: fn(&mut device::Device),
 }
 
-pub fn create_event(
-    device: &mut device::Device,
-    name: EventType,
-    when: u64,
-    handler: fn(&mut device::Device),
-) {
-    device.cpu.events[name as usize] = Event {
+pub fn create_event(device: &mut device::Device, name: usize, when: u64) {
+    device.cpu.events[name] = Event {
         enabled: true,
         count: when,
-        handler,
     };
     set_next_event(device);
 }
 
-pub fn get_event(device: &mut device::Device, name: EventType) -> Option<&mut Event> {
-    if device.cpu.events[name as usize].enabled {
-        return Some(&mut device.cpu.events[name as usize]);
+pub fn get_event(device: &mut device::Device, name: usize) -> Option<&mut Event> {
+    if device.cpu.events[name].enabled {
+        return Some(&mut device.cpu.events[name]);
     }
     None
 }
 
-pub fn remove_event(device: &mut device::Device, name: EventType) {
-    device.cpu.events[name as usize].enabled = false;
+pub fn remove_event(device: &mut device::Device, name: usize) {
+    device.cpu.events[name].enabled = false;
+}
+
+fn get_event_handler(name: usize) -> fn(&mut device::Device) {
+    match name {
+        EVENT_TYPE_AI => device::ai::dma_event,
+        EVENT_TYPE_SI => device::si::dma_event,
+        EVENT_TYPE_VI => device::vi::vertical_interrupt_event,
+        EVENT_TYPE_PI => device::pi::dma_event,
+        EVENT_TYPE_DP => device::rdp::rdp_interrupt_event,
+        EVENT_TYPE_SP => device::rsp_interface::rsp_event,
+        EVENT_TYPE_INT => device::exceptions::interrupt_exception,
+        EVENT_TYPE_SPDMA => device::rsp_interface::fifo_pop,
+        EVENT_TYPE_COMPARE => device::cop0::compare_event,
+        EVENT_TYPE_VRU => device::controller::vru::vru_talking_event,
+        EVENT_TYPE_PAK => device::controller::pak_switch_event,
+        _ => dummy_event,
+    }
 }
 
 pub fn trigger_event(device: &mut device::Device) {
     let next_event_name = device.cpu.next_event;
     device.cpu.events[next_event_name].enabled = false;
 
-    let handler = device.cpu.events[next_event_name].handler;
+    let handler = get_event_handler(next_event_name);
+    device.cpu.cop0.is_event = true;
     handler(device);
+    device.cpu.cop0.is_event = false;
     set_next_event(device);
 }
 
-pub fn set_next_event(device: &mut device::Device) {
+fn set_next_event(device: &mut device::Device) {
     device.cpu.next_event_count = u64::MAX;
     for (pos, i) in device.cpu.events.iter().enumerate() {
         if i.enabled && i.count < device.cpu.next_event_count {

src/device/exceptions.rs

@@ -1,15 +1,6 @@
 use crate::device;
 
 pub fn check_pending_interrupts(device: &mut device::Device) {
-    if (device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize]
-        & device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize]
-        & device::cop0::COP0_CAUSE_IP_MASK)
-        == 0
-    {
-        // interrupt disabled, or no pending interrupts
-        return;
-    }
-
     if (device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize]
         & (device::cop0::COP0_STATUS_IE
             | device::cop0::COP0_STATUS_EXL
@@ -20,6 +11,37 @@ pub fn check_pending_interrupts(device: &mut device::Device) {
         return;
     }
 
+    if device.mi.regs[device::mi::MI_INTR_REG as usize]
+        & device.mi.regs[device::mi::MI_INTR_MASK_REG as usize]
+        != 0
+    {
+        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] = device::cop0::COP0_CAUSE_IP2;
+    } else if device.cpu.cop0.pending_compare_interrupt {
+        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] = device::cop0::COP0_CAUSE_IP7;
+        device.cpu.cop0.pending_compare_interrupt = false;
+    }
+
+    if (device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize]
+        & device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize]
+        & device::cop0::COP0_CAUSE_IP_MASK)
+        == 0
+    {
+        // interrupt disabled, or no pending interrupts
+        return;
+    }
+
+    if device.cpu.cop0.is_event {
+        interrupt_exception(device);
+    } else {
+        device::events::create_event(
+            device,
+            device::events::EVENT_TYPE_INT,
+            device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize],
+        );
+    }
+}
+
+pub fn interrupt_exception(device: &mut device::Device) {
     exception_general(device, 0x180);
 }
 
@@ -133,7 +155,7 @@ pub fn tlb_miss_exception(
     exception_general(device, vector_offset)
 }
 
-pub fn exception_general(device: &mut device::Device, vector_offset: u32) {
+fn exception_general(device: &mut device::Device, vector_offset: u32) {
     if device.cpu.cop0.regs[device::cop0::COP0_STATUS_REG as usize] & device::cop0::COP0_STATUS_EXL
         == 0
     {

src/device/fpu_instructions.rs

@@ -8,7 +8,7 @@ pub fn ft(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn fd(opcode: u32) -> u32 {
+fn fd(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 

src/device/is_viewer.rs

@@ -1,6 +1,6 @@
 use crate::device;
 
-pub const IS_VIEWER_MASK: usize = 0xFFFF;
+const IS_VIEWER_MASK: usize = 0xFFFF;
 
 pub fn read_mem(
     device: &mut device::Device,
@@ -21,9 +21,10 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
         let length = (value & mask) as u64;
         let data = std::str::from_utf8(
             &device.cart.is_viewer_buffer[0x20_usize..(0x20 + length) as usize],
-        )
-        .unwrap();
-        print!("{}", data);
+        );
+        if data.is_ok() {
+            print!("{}", data.unwrap());
+        }
     } else {
         let mut data = u32::from_be_bytes(
             device.cart.is_viewer_buffer[masked_address..masked_address + 4]

src/device/memory.rs

@@ -1,24 +1,26 @@
-use crate::device;
+use crate::{device, savestates};
 
-pub const MM_RDRAM_DRAM: usize = 0x00000000;
-pub const MM_RDRAM_REGS: usize = 0x03f00000;
-pub const MM_RSP_MEM: usize = 0x04000000;
-pub const MM_RSP_REGS: usize = 0x04040000;
-pub const MM_RSP_REGS_PC: usize = 0x04080000;
-pub const MM_DPC_REGS: usize = 0x04100000;
-pub const MM_DPS_REGS: usize = 0x04200000;
-pub const MM_MI_REGS: usize = 0x04300000;
-pub const MM_VI_REGS: usize = 0x04400000;
-pub const MM_AI_REGS: usize = 0x04500000;
-pub const MM_PI_REGS: usize = 0x04600000;
-pub const MM_RI_REGS: usize = 0x04700000;
-pub const MM_SI_REGS: usize = 0x04800000;
+const MM_RDRAM_DRAM: usize = 0x00000000;
+const MM_RDRAM_REGS: usize = 0x03f00000;
+const MM_RSP_MEM: usize = 0x04000000;
+const MM_RSP_REGS: usize = 0x04040000;
+const MM_RSP_REGS_PC: usize = 0x04080000;
+const MM_DPC_REGS: usize = 0x04100000;
+const MM_DPS_REGS: usize = 0x04200000;
+const MM_MI_REGS: usize = 0x04300000;
+const MM_VI_REGS: usize = 0x04400000;
+const MM_AI_REGS: usize = 0x04500000;
+const MM_PI_REGS: usize = 0x04600000;
+const MM_RI_REGS: usize = 0x04700000;
+const MM_SI_REGS: usize = 0x04800000;
 //const MM_DOM2_ADDR1: usize = 0x05000000;
 pub const MM_DOM2_ADDR2: usize = 0x08000000;
 pub const MM_CART_ROM: usize = 0x10000000;
 pub const MM_PIF_MEM: usize = 0x1fc00000;
-//pub const MM_DOM1_ADDR3: usize = 0x1fd00000;
-pub const MM_IS_VIEWER: usize = 0x13ff0000;
+//const MM_DOM1_ADDR3: usize = 0x1fd00000;
+const MM_IS_VIEWER: usize = 0x13ff0000;
+pub const MM_SC64_BUFFER: usize = 0x1ffe0000;
+const MM_SC64_REGS: usize = 0x1fff0000;
 
 #[derive(PartialEq)]
 pub enum AccessType {
@@ -26,20 +28,27 @@ pub enum AccessType {
     Read,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, Default)]
 pub enum AccessSize {
-    // None = 0,
+    #[default]
+    None = 0,
     Word = 4,
     Dword = 8,
     Dcache = 16,
     Icache = 32,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Memory {
+    #[serde(skip, default = "savestates::default_memory_read")]
     pub fast_read: [fn(&mut device::Device, u64, AccessSize) -> u32; 0x2000], // fast_read is used for lookups that try to detect idle loops
+    #[serde(skip, default = "savestates::default_memory_read")]
     pub memory_map_read: [fn(&mut device::Device, u64, AccessSize) -> u32; 0x2000],
+    #[serde(skip, default = "savestates::default_memory_write")]
     pub memory_map_write: [fn(&mut device::Device, u64, u32, u32); 0x2000],
+    #[serde(with = "serde_big_array::BigArray")]
     pub icache: [device::cache::ICache; 512],
+    #[serde(with = "serde_big_array::BigArray")]
     pub dcache: [device::cache::DCache; 512],
 }
 
@@ -56,13 +65,10 @@ pub fn translate_address(
     address: u64,
     access_type: AccessType,
 ) -> (u64, bool, bool) {
-    let mut cached = false;
     if (address & 0xc0000000) != 0x80000000 {
         return device::tlb::get_physical_address(device, address, access_type);
-    } else if address & 0x20000000 == 0 {
-        cached = true;
     }
-    (address & 0x1FFFFFFF, cached, false)
+    (address & 0x1FFFFFFF, address & 0x20000000 == 0, false)
 }
 
 pub fn data_read(
@@ -145,19 +151,24 @@ pub fn init(device: &mut device::Device) {
             device.memory.memory_map_read[i] = device::si::read_regs;
             device.memory.memory_map_write[i] = device::si::write_regs;
         } else if (MM_DOM2_ADDR2 >> 16..=(MM_DOM2_ADDR2 + 0x1FFFF) >> 16).contains(&i) {
-            device.memory.memory_map_read[i] = device::sram::read_mem;
-            device.memory.memory_map_write[i] = device::sram::write_mem;
+            device.memory.memory_map_read[i] = device::cart::sram::read_mem;
+            device.memory.memory_map_write[i] = device::cart::sram::write_mem;
         } else if i >= MM_CART_ROM >> 16 && i <= (MM_CART_ROM + device.cart.rom.len() - 1) >> 16 {
-            device.memory.fast_read[i] = device::cart_rom::read_mem_fast;
-            device.memory.memory_map_read[i] = device::cart_rom::read_mem;
-            device.memory.memory_map_write[i] = device::cart_rom::write_mem;
+            device.memory.fast_read[i] = device::cart::rom::read_mem_fast;
+            device.memory.memory_map_read[i] = device::cart::rom::read_mem;
+            device.memory.memory_map_write[i] = device::cart::rom::write_mem;
         } else if i >= MM_IS_VIEWER >> 16 && i <= (MM_IS_VIEWER + 0xFFFF) >> 16 {
             device.memory.memory_map_read[i] = device::is_viewer::read_mem;
             device.memory.memory_map_write[i] = device::is_viewer::write_mem;
         } else if i >= MM_PIF_MEM >> 16 && i <= (MM_PIF_MEM + 0xFFFF) >> 16 {
             device.memory.memory_map_read[i] = device::pif::read_mem;
             device.memory.memory_map_write[i] = device::pif::write_mem;
+        } else if i >= MM_SC64_BUFFER >> 16 && i <= (MM_SC64_BUFFER + 0xFFFF) >> 16 {
+            device.memory.memory_map_read[i] = device::cart::sc64::read_mem;
+            device.memory.memory_map_write[i] = device::cart::sc64::write_mem;
+        } else if i >= MM_SC64_REGS >> 16 && i <= (MM_SC64_REGS + 0xFFFF) >> 16 {
+            device.memory.memory_map_read[i] = device::cart::sc64::read_regs;
+            device.memory.memory_map_write[i] = device::cart::sc64::write_regs;
         }
     }
-    device::cache::init(device)
 }

src/device/mi.rs

@@ -1,7 +1,7 @@
 use crate::device;
 
-pub const MI_INIT_MODE_REG: u32 = 0;
-pub const MI_VERSION_REG: u32 = 1;
+const MI_INIT_MODE_REG: u32 = 0;
+const MI_VERSION_REG: u32 = 1;
 pub const MI_INTR_REG: u32 = 2;
 pub const MI_INTR_MASK_REG: u32 = 3;
 pub const MI_REGS_COUNT: u32 = 4;
@@ -15,35 +15,36 @@ pub const MI_INTR_PI: u32 = 1 << 4;
 pub const MI_INTR_DP: u32 = 1 << 5;
 
 /* write */
-pub const MI_CLR_SP: u32 = 1 << 0;
-pub const MI_SET_SP: u32 = 1 << 1;
-pub const MI_CLR_SI: u32 = 1 << 2;
-pub const MI_SET_SI: u32 = 1 << 3;
-pub const MI_CLR_AI: u32 = 1 << 4;
-pub const MI_SET_AI: u32 = 1 << 5;
-pub const MI_CLR_VI: u32 = 1 << 6;
-pub const MI_SET_VI: u32 = 1 << 7;
-pub const MI_CLR_PI: u32 = 1 << 8;
-pub const MI_SET_PI: u32 = 1 << 9;
-pub const MI_CLR_DP: u32 = 1 << 10;
-pub const MI_SET_DP: u32 = 1 << 11;
+const MI_CLR_SP: u32 = 1 << 0;
+const MI_SET_SP: u32 = 1 << 1;
+const MI_CLR_SI: u32 = 1 << 2;
+const MI_SET_SI: u32 = 1 << 3;
+const MI_CLR_AI: u32 = 1 << 4;
+const MI_SET_AI: u32 = 1 << 5;
+const MI_CLR_VI: u32 = 1 << 6;
+const MI_SET_VI: u32 = 1 << 7;
+const MI_CLR_PI: u32 = 1 << 8;
+const MI_SET_PI: u32 = 1 << 9;
+const MI_CLR_DP: u32 = 1 << 10;
+const MI_SET_DP: u32 = 1 << 11;
 
 /* mode read */
-pub const MI_INIT_MODE: u32 = 1 << 7;
-pub const MI_EBUS_MODE: u32 = 1 << 8;
-pub const MI_RDRAM_MODE: u32 = 1 << 9;
+const MI_INIT_MODE: u32 = 1 << 7;
+const MI_EBUS_MODE: u32 = 1 << 8;
+const MI_RDRAM_MODE: u32 = 1 << 9;
 
 /* mode write */
-pub const MI_CLR_INIT: u32 = 1 << 7;
-pub const MI_SET_INIT: u32 = 1 << 8;
-pub const MI_CLR_EBUS: u32 = 1 << 9;
-pub const MI_SET_EBUS: u32 = 1 << 10;
-pub const MI_CLR_DP_INTR: u32 = 1 << 11;
-pub const MI_CLR_RDRAM: u32 = 1 << 12;
-pub const MI_SET_RDRAM: u32 = 1 << 13;
+const MI_CLR_INIT: u32 = 1 << 7;
+const MI_SET_INIT: u32 = 1 << 8;
+const MI_CLR_EBUS: u32 = 1 << 9;
+const MI_SET_EBUS: u32 = 1 << 10;
+const MI_CLR_DP_INTR: u32 = 1 << 11;
+const MI_CLR_RDRAM: u32 = 1 << 12;
+const MI_SET_RDRAM: u32 = 1 << 13;
 
-pub const MI_INIT_LENGTH_MASK: u32 = 0b1111111;
+const MI_INIT_LENGTH_MASK: u32 = 0b1111111;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Mi {
     pub regs: [u32; MI_REGS_COUNT as usize],
 }
@@ -53,6 +54,7 @@ pub fn read_regs(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, 20);
     device.mi.regs[((address & 0xFFFF) >> 2) as usize]
 }
 
@@ -64,18 +66,14 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
         _ => device::memory::masked_write_32(&mut device.mi.regs[reg as usize], value, mask),
     }
 
-    if device.mi.regs[MI_INTR_REG as usize] & device.mi.regs[MI_INTR_MASK_REG as usize] != 0 {
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] &=
-            !device::cop0::COP0_CAUSE_EXCCODE_MASK;
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] |= device::cop0::COP0_CAUSE_IP2;
-    } else {
+    if device.mi.regs[MI_INTR_REG as usize] & device.mi.regs[MI_INTR_MASK_REG as usize] == 0 {
         device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] &=
             !device::cop0::COP0_CAUSE_IP2;
     }
     device::exceptions::check_pending_interrupts(device)
 }
 
-pub fn update_init_mode(device: &mut device::Device, w: u32) {
+fn update_init_mode(device: &mut device::Device, w: u32) {
     device.mi.regs[MI_INIT_MODE_REG as usize] &= !MI_INIT_LENGTH_MASK;
     device.mi.regs[MI_INIT_MODE_REG as usize] |= w & MI_INIT_LENGTH_MASK;
 
@@ -103,7 +101,7 @@ pub fn update_init_mode(device: &mut device::Device, w: u32) {
     }
 }
 
-pub fn update_intr_mask(device: &mut device::Device, w: u32) {
+fn update_intr_mask(device: &mut device::Device, w: u32) {
     if w & MI_CLR_SP != 0 {
         device.mi.regs[MI_INTR_MASK_REG as usize] &= !MI_INTR_SP
     }
@@ -149,37 +147,13 @@ pub fn clear_rcp_interrupt(device: &mut device::Device, interrupt: u32) {
         device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] &=
             !device::cop0::COP0_CAUSE_IP2;
     }
-    device::exceptions::check_pending_interrupts(device)
 }
 
 pub fn set_rcp_interrupt(device: &mut device::Device, interrupt: u32) {
     device.mi.regs[MI_INTR_REG as usize] |= interrupt;
-
-    if device.mi.regs[MI_INTR_REG as usize] & device.mi.regs[MI_INTR_MASK_REG as usize] != 0 {
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] &=
-            !device::cop0::COP0_CAUSE_EXCCODE_MASK;
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] |= device::cop0::COP0_CAUSE_IP2;
-    }
     device::exceptions::check_pending_interrupts(device)
 }
 
-pub fn schedule_rcp_interrupt(device: &mut device::Device, interrupt: u32) {
-    device.mi.regs[MI_INTR_REG as usize] |= interrupt;
-
-    if device.mi.regs[MI_INTR_REG as usize] & device.mi.regs[MI_INTR_MASK_REG as usize] != 0 {
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] &=
-            !device::cop0::COP0_CAUSE_EXCCODE_MASK;
-        device.cpu.cop0.regs[device::cop0::COP0_CAUSE_REG as usize] |= device::cop0::COP0_CAUSE_IP2;
-    }
-
-    device::events::create_event(
-        device,
-        device::events::EventType::InterruptCheck,
-        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize],
-        device::exceptions::check_pending_interrupts,
-    )
-}
-
 pub fn init(device: &mut device::Device) {
     device.mi.regs[MI_VERSION_REG as usize] = 0x02020102
 }

src/device/pi.rs

@@ -1,35 +1,37 @@
-use crate::device;
+use crate::{device, ui};
 
-pub const PI_DRAM_ADDR_REG: u32 = 0;
-pub const PI_CART_ADDR_REG: u32 = 1;
-pub const PI_RD_LEN_REG: u32 = 2;
-pub const PI_WR_LEN_REG: u32 = 3;
+const PI_DRAM_ADDR_REG: u32 = 0;
+const PI_CART_ADDR_REG: u32 = 1;
+const PI_RD_LEN_REG: u32 = 2;
+const PI_WR_LEN_REG: u32 = 3;
 pub const PI_STATUS_REG: u32 = 4;
-pub const PI_BSD_DOM1_LAT_REG: u32 = 5;
-pub const PI_BSD_DOM1_PWD_REG: u32 = 6;
-pub const PI_BSD_DOM1_PGS_REG: u32 = 7;
-pub const PI_BSD_DOM1_RLS_REG: u32 = 8;
-pub const PI_BSD_DOM2_LAT_REG: u32 = 9;
-pub const PI_BSD_DOM2_PWD_REG: u32 = 10;
-pub const PI_BSD_DOM2_PGS_REG: u32 = 11;
-pub const PI_BSD_DOM2_RLS_REG: u32 = 12;
-pub const PI_REGS_COUNT: u32 = 13;
+const PI_BSD_DOM1_LAT_REG: u32 = 5;
+const PI_BSD_DOM1_PWD_REG: u32 = 6;
+const PI_BSD_DOM1_PGS_REG: u32 = 7;
+const PI_BSD_DOM1_RLS_REG: u32 = 8;
+const PI_BSD_DOM2_LAT_REG: u32 = 9;
+const PI_BSD_DOM2_PWD_REG: u32 = 10;
+const PI_BSD_DOM2_PGS_REG: u32 = 11;
+const PI_BSD_DOM2_RLS_REG: u32 = 12;
+//const UNKNOWN_REG: u32 = 13; //LibDragon
+pub const PI_REGS_COUNT: u32 = 14;
 
 /* PI_STATUS - read */
-pub const PI_STATUS_DMA_BUSY: u32 = 1 << 0;
+const PI_STATUS_DMA_BUSY: u32 = 1 << 0;
 pub const PI_STATUS_IO_BUSY: u32 = 1 << 1;
-//pub const PI_STATUS_ERROR: u32 = 1 << 2;
-pub const PI_STATUS_INTERRUPT: u32 = 1 << 3;
+//const PI_STATUS_ERROR: u32 = 1 << 2;
+const PI_STATUS_INTERRUPT: u32 = 1 << 3;
 
 /* PI_STATUS - write */
-pub const PI_STATUS_RESET: u32 = 1 << 0;
-pub const PI_STATUS_CLR_INTR: u32 = 1 << 1;
+const PI_STATUS_RESET: u32 = 1 << 0;
+const PI_STATUS_CLR_INTR: u32 = 1 << 1;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Pi {
     pub regs: [u32; PI_REGS_COUNT as usize],
 }
 
-pub struct PiHandler {
+struct PiHandler {
     read: fn(&mut device::Device, u32, u32, u32) -> u64,
     write: fn(&mut device::Device, u32, u32, u32) -> u64,
 }
@@ -39,6 +41,7 @@ pub fn read_regs(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, 20);
     let reg = (address & 0xFFFF) >> 2;
     match reg as u32 {
         PI_WR_LEN_REG | PI_RD_LEN_REG => 0x7F,
@@ -48,7 +51,7 @@ pub fn read_regs(
     }
 }
 
-pub fn dma_read(device: &mut device::Device) {
+fn dma_read(device: &mut device::Device) {
     let handler = get_handler(device.pi.regs[PI_CART_ADDR_REG as usize]);
 
     let cart_addr = device.pi.regs[PI_CART_ADDR_REG as usize] & !1;
@@ -64,9 +67,8 @@ pub fn dma_read(device: &mut device::Device) {
 
     device::events::create_event(
         device,
-        device::events::EventType::PI,
+        device::events::EVENT_TYPE_PI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + cycles,
-        dma_event,
     );
 
     /* Update PI_DRAM_ADDR_REG and PI_CART_ADDR_REG */
@@ -78,12 +80,13 @@ pub fn dma_read(device: &mut device::Device) {
     device.pi.regs[PI_STATUS_REG as usize] |= PI_STATUS_DMA_BUSY
 }
 
-pub fn dma_write(device: &mut device::Device) {
+fn dma_write(device: &mut device::Device) {
     let handler = get_handler(device.pi.regs[PI_CART_ADDR_REG as usize]);
 
     let cart_addr = device.pi.regs[PI_CART_ADDR_REG as usize] & !1;
     let dram_addr = device.pi.regs[PI_DRAM_ADDR_REG as usize] & 0xFFFFFE;
     let mut length = (device.pi.regs[PI_WR_LEN_REG as usize] & 0xFFFFFF) + 1;
+    ui::video::check_framebuffers(dram_addr);
 
     /* PI seems to treat the first 128 bytes differently, see https://n64brew.dev/wiki/Peripheral_Interface#Unaligned_DMA_transfer */
     if length >= 0x7f && (length & 1) != 0 {
@@ -97,9 +100,8 @@ pub fn dma_write(device: &mut device::Device) {
 
     device::events::create_event(
         device,
-        device::events::EventType::PI,
+        device::events::EVENT_TYPE_PI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + cycles,
-        dma_event,
     );
 
     /* Update PI_DRAM_ADDR_REG and PI_CART_ADDR_REG */
@@ -111,19 +113,29 @@ pub fn dma_write(device: &mut device::Device) {
     device.pi.regs[PI_STATUS_REG as usize] |= PI_STATUS_DMA_BUSY
 }
 
-pub fn get_handler(address: u32) -> PiHandler {
+fn get_handler(address: u32) -> PiHandler {
     let mut handler = PiHandler {
-        read: device::cart_rom::dma_read,
-        write: device::cart_rom::dma_write,
+        read: device::cart::rom::dma_read,
+        write: device::cart::rom::dma_write,
     };
-    if address >= device::memory::MM_CART_ROM as u32 {
-        handler.read = device::cart_rom::dma_read;
-        handler.write = device::cart_rom::dma_write;
-    } else if address >= device::memory::MM_DOM2_ADDR2 as u32 {
-        handler.read = device::sram::dma_read;
-        handler.write = device::sram::dma_write;
+    if address >= device::memory::MM_SC64_BUFFER as u32
+        && address < (device::memory::MM_SC64_BUFFER + 0x2000) as u32
+    {
+        handler.read = device::cart::sc64::dma_read;
+        handler.write = device::cart::sc64::dma_write;
+    } else if address >= device::memory::MM_CART_ROM as u32
+        && address < device::memory::MM_PIF_MEM as u32
+    {
+        handler.read = device::cart::rom::dma_read;
+        handler.write = device::cart::rom::dma_write;
+    } else if address >= device::memory::MM_DOM2_ADDR2 as u32
+        && address < device::memory::MM_CART_ROM as u32
+    {
+        handler.read = device::cart::sram::dma_read;
+        handler.write = device::cart::sram::dma_write;
     } else {
-        panic!("unknown pi handler")
+        handler.read = unknown_dma_read;
+        handler.write = unknown_dma_write;
     }
     handler
 }
@@ -148,10 +160,15 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
                 device.pi.regs[PI_STATUS_REG as usize] = 0
             }
         }
-        PI_BSD_DOM1_LAT_REG | PI_BSD_DOM1_PWD_REG | PI_BSD_DOM1_PGS_REG | PI_BSD_DOM1_RLS_REG
-        | PI_BSD_DOM2_LAT_REG | PI_BSD_DOM2_PWD_REG | PI_BSD_DOM2_PGS_REG | PI_BSD_DOM2_RLS_REG => {
+        PI_BSD_DOM1_LAT_REG | PI_BSD_DOM1_PWD_REG | PI_BSD_DOM2_LAT_REG | PI_BSD_DOM2_PWD_REG => {
             device::memory::masked_write_32(&mut device.pi.regs[reg as usize], value & 0xFF, mask)
         }
+        PI_BSD_DOM1_PGS_REG | PI_BSD_DOM2_PGS_REG => {
+            device::memory::masked_write_32(&mut device.pi.regs[reg as usize], value & 0xF, mask)
+        }
+        PI_BSD_DOM1_RLS_REG | PI_BSD_DOM2_RLS_REG => {
+            device::memory::masked_write_32(&mut device.pi.regs[reg as usize], value & 0x3, mask)
+        }
         _ => device::memory::masked_write_32(&mut device.pi.regs[reg as usize], value, mask),
     }
 }
@@ -188,3 +205,26 @@ pub fn dma_event(device: &mut device::Device) {
 
     device::mi::set_rcp_interrupt(device, device::mi::MI_INTR_PI)
 }
+
+fn unknown_dma_read(
+    device: &mut device::Device,
+    mut _cart_addr: u32,
+    mut _dram_addr: u32,
+    length: u32,
+) -> u64 {
+    device::pi::calculate_cycles(device, 1, length)
+}
+
+fn unknown_dma_write(
+    device: &mut device::Device,
+    mut _cart_addr: u32,
+    mut dram_addr: u32,
+    length: u32,
+) -> u64 {
+    dram_addr &= device::rdram::RDRAM_MASK as u32;
+
+    for i in 0..length {
+        device.rdram.mem[(dram_addr + i) as usize ^ device.byte_swap] = 0;
+    }
+    device::pi::calculate_cycles(device, 1, length)
+}

src/device/pif.rs

@@ -1,20 +1,25 @@
 mod rom;
 use crate::device;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Pif {
+    #[serde(with = "serde_big_array::BigArray")]
     pub rom: [u8; 1984],
+    #[serde(with = "serde_big_array::BigArray")]
     pub ram: [u8; 64],
     pub channels: [PifChannel; 5],
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct PifChannel {
     pub tx: Option<usize>,
     pub tx_buf: Option<usize>,
     pub rx: Option<usize>,
     pub rx_buf: Option<usize>,
+    #[serde(skip)]
     pub process: Option<fn(&mut device::Device, usize)>,
     pub pak_handler: Option<device::controller::PakHandler>,
+    pub change_pak: device::controller::PakType,
 }
 
 pub const PIF_RAM_SIZE: usize = 64;
@@ -64,15 +69,14 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
     device.si.dma_dir = device::si::DmaDir::Write;
     device::events::create_event(
         device,
-        device::events::EventType::SI,
+        device::events::EVENT_TYPE_SI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + 3200,
-        device::si::dma_event,
     ); //based on https://github.com/rasky/n64-systembench
     device.si.regs[device::si::SI_STATUS_REG as usize] |=
         device::si::SI_STATUS_DMA_BUSY | device::si::SI_STATUS_IO_BUSY
 }
 
-pub fn process_channel(device: &mut device::Device, channel: usize) -> usize {
+fn process_channel(device: &mut device::Device, channel: usize) -> usize {
     /* don't process channel if it has been disabled */
     if device.pif.channels[channel].tx.is_none() {
         return 0;
@@ -99,17 +103,18 @@ pub fn update_pif_ram(device: &mut device::Device) -> u64 {
     for k in 0..PIF_CHANNELS_COUNT {
         active_channels += process_channel(device, k)
     }
-    (24000 + (active_channels * 28000)) as u64
+
+    (24000 + (active_channels * 30000)) as u64
 }
 
-pub fn disable_pif_channel(channel: &mut PifChannel) {
+fn disable_pif_channel(channel: &mut PifChannel) {
     channel.tx = None;
     channel.rx = None;
     channel.tx_buf = None;
     channel.rx_buf = None;
 }
 
-pub fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize) -> usize {
+fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize) -> usize {
     let tx = device.pif.ram[buf] & 0x3f;
     let rx = device.pif.ram[buf + 1] & 0x3f;
 
@@ -123,7 +128,7 @@ pub fn setup_pif_channel(device: &mut device::Device, channel: usize, buf: usize
     (2 + tx + rx) as usize
 }
 
-pub fn setup_channels_format(device: &mut device::Device) {
+fn setup_channels_format(device: &mut device::Device) {
     let mut i: usize = 0;
     let mut k: usize = 0;
     while i < PIF_RAM_SIZE && k < PIF_CHANNELS_COUNT {
@@ -215,6 +220,22 @@ pub fn process_ram(device: &mut device::Device) {
     device.pif.ram[0x3F] &= !clrmask
 }
 
+pub fn connect_pif_channels(device: &mut device::Device) {
+    for i in 0..4 {
+        if device.netplay.is_none() {
+            if device.ui.config.input.controller_enabled[i] {
+                device.pif.channels[i].process = Some(device::controller::process);
+            }
+        } else if device.netplay.as_ref().unwrap().player_data[i].reg_id != 0 {
+            device.pif.channels[i].process = Some(device::controller::process);
+        }
+    }
+    if device.ui.config.input.emulate_vru {
+        device.pif.channels[3].process = Some(device::controller::vru::process);
+    }
+    device.pif.channels[4].process = Some(device::cart::process)
+}
+
 pub fn init(device: &mut device::Device) {
     if device.cart.pal {
         device.pif.rom = rom::PAL_PIF_ROM;
@@ -225,16 +246,28 @@ pub fn init(device: &mut device::Device) {
     device.pif.ram[0x27] = device.cart.cic_seed;
 
     let mempak_handler = device::controller::PakHandler {
-        read: device::mempak::read,
-        write: device::mempak::write,
+        read: device::controller::mempak::read,
+        write: device::controller::mempak::write,
+        pak_type: device::controller::PakType::MemPak,
     };
 
-    device.pif.channels[0].pak_handler = Some(mempak_handler);
-    device.pif.channels[0].process = Some(device::controller::process);
-    device.pif.channels[4].process = Some(device::cart::process)
+    connect_pif_channels(device);
+
+    for i in 0..4 {
+        if device.netplay.is_none() {
+            if device.ui.config.input.controller_enabled[i] {
+                device.pif.channels[i].pak_handler = Some(mempak_handler);
+            }
+        } else if device.netplay.as_ref().unwrap().player_data[i].reg_id != 0 {
+            device.pif.channels[i].pak_handler = Some(mempak_handler);
+        }
+    }
+    if device.ui.config.input.emulate_vru {
+        device.pif.channels[3].pak_handler = None;
+    }
 }
 
-pub fn process_cic_challenge(device: &mut device::Device) {
+fn process_cic_challenge(device: &mut device::Device) {
     let mut challenge: [u8; 30] = [0; 30];
     let mut response: [u8; 30] = [0; 30];
 
@@ -255,7 +288,7 @@ pub fn process_cic_challenge(device: &mut device::Device) {
     }
 }
 
-pub fn n64_cic_nus_6105(chl: [u8; 30], rsp: &mut [u8; 30], len: usize) {
+fn n64_cic_nus_6105(chl: [u8; 30], rsp: &mut [u8; 30], len: usize) {
     let lut0: [u8; 0x10] = [
         0x4, 0x7, 0xA, 0x7, 0xE, 0x5, 0xE, 0x1, 0xC, 0xF, 0x8, 0xF, 0x6, 0x3, 0x6, 0x9,
     ];

src/device/rdp.rs

@@ -1,50 +1,51 @@
-use crate::device;
-use crate::ui;
+use crate::{device, savestates, ui};
 
 pub const DPC_START_REG: u32 = 0;
 pub const DPC_END_REG: u32 = 1;
 pub const DPC_CURRENT_REG: u32 = 2;
 pub const DPC_STATUS_REG: u32 = 3;
-pub const DPC_CLOCK_REG: u32 = 4;
-pub const DPC_BUFBUSY_REG: u32 = 5;
-pub const DPC_PIPEBUSY_REG: u32 = 6;
-pub const DPC_TMEM_REG: u32 = 7;
+const DPC_CLOCK_REG: u32 = 4;
+const DPC_BUFBUSY_REG: u32 = 5;
+const DPC_PIPEBUSY_REG: u32 = 6;
+const DPC_TMEM_REG: u32 = 7;
 pub const DPC_REGS_COUNT: u32 = 8;
 
-//pub const DPS_TBIST_REG: u32 = 0;
-//pub const DPS_TEST_MODE_REG: u32 = 1;
-//pub const DPS_BUFTEST_ADDR_REG: u32 = 2;
-//pub const DPS_BUFTEST_DATA_REG: u32 = 3;
+//const DPS_TBIST_REG: u32 = 0;
+//const DPS_TEST_MODE_REG: u32 = 1;
+//const DPS_BUFTEST_ADDR_REG: u32 = 2;
+//const DPS_BUFTEST_DATA_REG: u32 = 3;
 pub const DPS_REGS_COUNT: u32 = 4;
 
 /* DPC status - read */
-pub const DPC_STATUS_XBUS_DMEM_DMA: u32 = 1 << 0;
-pub const DPC_STATUS_FREEZE: u32 = 1 << 1;
-pub const DPC_STATUS_FLUSH: u32 = 1 << 2;
-pub const DPC_STATUS_START_GCLK: u32 = 1 << 3;
-pub const DPC_STATUS_TMEM_BUSY: u32 = 1 << 4;
-pub const DPC_STATUS_PIPE_BUSY: u32 = 1 << 5;
-pub const DPC_STATUS_CMD_BUSY: u32 = 1 << 6;
-pub const DPC_STATUS_CBUF_READY: u32 = 1 << 7;
-//pub const DPC_STATUS_DMA_BUSY: u32 = 1 << 8;
-//pub const DPC_STATUS_END_VALID: u32 = 1 << 9;
-pub const DPC_STATUS_START_VALID: u32 = 1 << 10;
+const DPC_STATUS_XBUS_DMEM_DMA: u32 = 1 << 0;
+const DPC_STATUS_FREEZE: u32 = 1 << 1;
+const DPC_STATUS_FLUSH: u32 = 1 << 2;
+const DPC_STATUS_START_GCLK: u32 = 1 << 3;
+const DPC_STATUS_TMEM_BUSY: u32 = 1 << 4;
+const DPC_STATUS_PIPE_BUSY: u32 = 1 << 5;
+const DPC_STATUS_CMD_BUSY: u32 = 1 << 6;
+const DPC_STATUS_CBUF_READY: u32 = 1 << 7;
+//const DPC_STATUS_DMA_BUSY: u32 = 1 << 8;
+//const DPC_STATUS_END_VALID: u32 = 1 << 9;
+const DPC_STATUS_START_VALID: u32 = 1 << 10;
 /* DPC status - write */
-pub const DPC_CLR_XBUS_DMEM_DMA: u32 = 1 << 0;
-pub const DPC_SET_XBUS_DMEM_DMA: u32 = 1 << 1;
-pub const DPC_CLR_FREEZE: u32 = 1 << 2;
-pub const DPC_SET_FREEZE: u32 = 1 << 3;
-pub const DPC_CLR_FLUSH: u32 = 1 << 4;
-pub const DPC_SET_FLUSH: u32 = 1 << 5;
-pub const DPC_CLR_TMEM_CTR: u32 = 1 << 6;
-pub const DPC_CLR_PIPE_CTR: u32 = 1 << 7;
-pub const DPC_CLR_CMD_CTR: u32 = 1 << 8;
-pub const DPC_CLR_CLOCK_CTR: u32 = 1 << 9;
+const DPC_CLR_XBUS_DMEM_DMA: u32 = 1 << 0;
+const DPC_SET_XBUS_DMEM_DMA: u32 = 1 << 1;
+const DPC_CLR_FREEZE: u32 = 1 << 2;
+const DPC_SET_FREEZE: u32 = 1 << 3;
+const DPC_CLR_FLUSH: u32 = 1 << 4;
+const DPC_SET_FLUSH: u32 = 1 << 5;
+const DPC_CLR_TMEM_CTR: u32 = 1 << 6;
+const DPC_CLR_PIPE_CTR: u32 = 1 << 7;
+const DPC_CLR_CMD_CTR: u32 = 1 << 8;
+const DPC_CLR_CLOCK_CTR: u32 = 1 << 9;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Rdp {
     pub regs_dpc: [u32; DPC_REGS_COUNT as usize],
     pub regs_dps: [u32; DPS_REGS_COUNT as usize],
     pub wait_frozen: bool,
+    pub last_status_value: u32,
 }
 
 pub fn read_regs_dpc(
@@ -52,7 +53,29 @@ pub fn read_regs_dpc(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
-    device.rdp.regs_dpc[((address & 0xFFFF) >> 2) as usize]
+    if !device.rsp.cpu.running {
+        device::cop0::add_cycles(device, 20);
+    }
+    let reg = (address & 0xFFFF) >> 2;
+    match reg as u32 {
+        DPC_STATUS_REG => {
+            let value =
+                device.rdp.regs_dpc[reg as usize] & (DPC_STATUS_PIPE_BUSY | DPC_STATUS_CMD_BUSY);
+            if value == device.rdp.last_status_value && value != 0 {
+                device.rsp.cpu.sync_point = true;
+            }
+            device.rdp.last_status_value = value;
+            device.rdp.regs_dpc[reg as usize]
+        }
+        DPC_CLOCK_REG => 0xFFFFFF, // needed for JFG
+        DPC_CURRENT_REG => {
+            if device.rdp.wait_frozen {
+                device.rsp.cpu.sync_point = true;
+            }
+            device.rdp.regs_dpc[reg as usize]
+        }
+        _ => device.rdp.regs_dpc[reg as usize],
+    }
 }
 
 pub fn write_regs_dpc(device: &mut device::Device, address: u64, value: u32, mask: u32) {
@@ -91,15 +114,26 @@ pub fn write_regs_dpc(device: &mut device::Device, address: u64, value: u32, mas
     }
 }
 
-pub fn run_rdp(device: &mut device::Device) {
+fn run_rdp(device: &mut device::Device) {
     let timer = ui::video::process_rdp_list();
+    device.rdp.regs_dpc[DPC_STATUS_REG as usize] |=
+        DPC_STATUS_START_GCLK | DPC_STATUS_PIPE_BUSY | DPC_STATUS_CMD_BUSY;
+    device.rdp.regs_dpc[DPC_PIPEBUSY_REG as usize] = 0xFFFFFF;
 
     if timer != 0 {
+        if device.save_state {
+            // Right after full sync, good time for save state
+            device.save_state = false;
+            savestates::create_savestate(device);
+        } else if device.load_state {
+            // Right after full sync, good time for save state
+            device.load_state = false;
+            savestates::load_savestate(device);
+        }
         device::events::create_event(
             device,
-            device::events::EventType::DP,
+            device::events::EVENT_TYPE_DP,
             device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + timer,
-            rdp_interrupt_event,
         )
     }
 }
@@ -109,6 +143,7 @@ pub fn read_regs_dps(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, 20);
     device.rdp.regs_dps[((address & 0xFFFF) >> 2) as usize]
 }
 
@@ -120,7 +155,7 @@ pub fn write_regs_dps(device: &mut device::Device, address: u64, value: u32, mas
     )
 }
 
-pub fn update_dpc_status(device: &mut device::Device, w: u32) {
+fn update_dpc_status(device: &mut device::Device, w: u32) {
     /* clear / set xbus_dmem_dma */
     if w & DPC_CLR_XBUS_DMEM_DMA != 0 {
         device.rdp.regs_dpc[DPC_STATUS_REG as usize] &= !DPC_STATUS_XBUS_DMEM_DMA
@@ -171,10 +206,12 @@ pub fn update_dpc_status(device: &mut device::Device, w: u32) {
 pub fn init(device: &mut device::Device) {
     device.rdp.regs_dpc[DPC_STATUS_REG as usize] |=
         DPC_STATUS_START_GCLK | DPC_STATUS_PIPE_BUSY | DPC_STATUS_CBUF_READY;
+    device.rdp.regs_dpc[DPC_PIPEBUSY_REG as usize] = 0xFFFFFF;
 }
 
 pub fn rdp_interrupt_event(device: &mut device::Device) {
-    ui::video::full_sync();
+    device.rdp.regs_dpc[DPC_STATUS_REG as usize] &=
+        !(DPC_STATUS_START_GCLK | DPC_STATUS_PIPE_BUSY | DPC_STATUS_CMD_BUSY);
 
     device::mi::set_rcp_interrupt(device, device::mi::MI_INTR_DP)
 }

src/device/rdram.rs

@@ -1,11 +1,26 @@
 use crate::device;
-use std::alloc::{alloc_zeroed, Layout};
+use crate::ui;
+use std::alloc::{Layout, alloc_zeroed};
+
+//const RDRAM_CONFIG_REG: u32 = 0;
+//const RDRAM_DEVICE_ID_REG: u32 = 1;
+//const RDRAM_DELAY_REG: u32 = 2;
+const RDRAM_MODE_REG: u32 = 3;
+//const RDRAM_REF_INTERVAL_REG: u32 = 4;
+//const RDRAM_REF_ROW_REG: u32 = 5;
+//const RDRAM_RAS_INTERVAL_REG: u32 = 6;
+//const RDRAM_MIN_INTERVAL_REG: u32 = 7;
+//const RDRAM_ADDR_SELECT_REG: u32 = 8;
+//const RDRAM_DEVICE_MANUF_REG: u32 = 9;
+pub const RDRAM_REGS_COUNT: u32 = 10;
 
 pub const RDRAM_MASK: usize = 0xFFFFFF;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Rdram {
     pub mem: Vec<u8>,
     pub size: u32,
+    pub regs: [[u32; RDRAM_REGS_COUNT as usize]; 4],
 }
 
 pub fn read_mem_fast(
@@ -32,6 +47,7 @@ pub fn read_mem(
     );
     let masked_address = address as usize & RDRAM_MASK;
     if address < device.rdram.size as u64 {
+        ui::video::check_framebuffers(masked_address as u32);
         u32::from_ne_bytes(
             device.rdram.mem[masked_address..masked_address + 4]
                 .try_into()
@@ -44,6 +60,7 @@ pub fn read_mem(
 
 pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u32) {
     if address < device.rdram.size as u64 {
+        ui::video::check_framebuffers(address as u32);
         let mut data = u32::from_ne_bytes(
             device.rdram.mem[address as usize..(address + 4) as usize]
                 .try_into()
@@ -56,15 +73,28 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
 }
 
 pub fn read_regs(
-    _device: &mut device::Device,
-    _address: u64,
+    device: &mut device::Device,
+    address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
-    panic!("rdram read reg");
+    device::cop0::add_cycles(device, 20);
+    let chip_id = (address >> 13) & 3;
+    let reg = (address & 0x3FF) >> 2;
+    match reg as u32 {
+        RDRAM_MODE_REG => device.pi.regs[reg as usize] ^ 0xc0c0c0c0,
+        0x80 => 0x00000000, //Row, needed for libdragon
+        _ => device.rdram.regs[chip_id as usize][reg as usize],
+    }
 }
 
-pub fn write_regs(_device: &mut device::Device, _address: u64, _value: u32, _mask: u32) {
-    panic!("rdram write reg");
+pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u32) {
+    let chip_id = (address >> 13) & 3;
+    let reg = (address & 0x3FF) >> 2;
+    device::memory::masked_write_32(
+        &mut device.rdram.regs[chip_id as usize][reg as usize],
+        value,
+        mask,
+    )
 }
 
 pub fn init(device: &mut device::Device) {
@@ -78,6 +108,11 @@ pub fn init(device: &mut device::Device) {
     // hack, skip RDRAM initialization
     device.rdram.mem[device.cart.rdram_size_offset..device.cart.rdram_size_offset + 4]
         .copy_from_slice(&device.rdram.size.to_ne_bytes());
+
+    device.ri.regs[device::ri::RI_MODE_REG as usize] = 0x0e;
+    device.ri.regs[device::ri::RI_CONFIG_REG as usize] = 0x40;
+    device.ri.regs[device::ri::RI_SELECT_REG as usize] = 0x14;
+    device.ri.regs[device::ri::RI_REFRESH_REG as usize] = 0x00063634;
 }
 
 pub fn rdram_calculate_cycles(length: u64) -> u64 {

src/device/ri.rs

@@ -1,17 +1,19 @@
 use crate::device;
 
-//pub const RI_MODE_REG: u32 = 0;
-//pub const RI_CONFIG_REG: u32 = 1;
-//pub const RI_CURRENT_LOAD_REG: u32 = 2;
+pub const RI_MODE_REG: u32 = 0;
+pub const RI_CONFIG_REG: u32 = 1;
+//const RI_CURRENT_LOAD_REG: u32 = 2;
 pub const RI_SELECT_REG: u32 = 3;
-//pub const RI_REFRESH_REG: u32 = 4;
-//pub const RI_LATENCY_REG: u32 = 5;
-//pub const RI_ERROR_REG: u32 = 6;
-//pub const RI_WERROR_REG: u32 = 7;
+pub const RI_REFRESH_REG: u32 = 4;
+//const RI_LATENCY_REG: u32 = 5;
+//const RI_ERROR_REG: u32 = 6;
+//const RI_WERROR_REG: u32 = 7;
 pub const RI_REGS_COUNT: u32 = 8;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Ri {
     pub regs: [u32; RI_REGS_COUNT as usize],
+    pub ram_init: bool,
 }
 
 pub fn read_regs(
@@ -19,8 +21,10 @@ pub fn read_regs(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
-    if ((address & 0xFFFF) >> 2) as u32 == RI_SELECT_REG {
-        return 0x14; // hack, skip RDRAM initialization
+    device::cop0::add_cycles(device, 20);
+    if ((address & 0xFFFF) >> 2) as u32 == RI_SELECT_REG && !device.ri.ram_init {
+        device::cop0::add_cycles(device, device.cpu.clock_rate / 2); // hack, simulate RDRAM initialization
+        device.ri.ram_init = true;
     }
     device.ri.regs[((address & 0xFFFF) >> 2) as usize]
 }

src/device/rsp_cpu.rs

@@ -1,56 +1,116 @@
-use crate::device;
+#[cfg(target_arch = "aarch64")]
+use device::__m128i;
+#[cfg(target_arch = "aarch64")]
+include!(concat!(env!("OUT_DIR"), "/simd_bindings.rs"));
+use crate::{device, savestates};
+#[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct BranchState {
     pub state: device::cpu::State,
     pub pc: u32,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct Instructions {
+    #[serde(skip, default = "savestates::default_instruction")]
     pub func: fn(&mut device::Device, u32),
     pub opcode: u32,
 }
 
-#[derive(PartialEq, Copy, Clone)]
+#[derive(PartialEq, Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub enum InstructionType {
     Su,
     Vu,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Cpu {
+    #[serde(with = "serde_big_array::BigArray")]
     pub instructions: [Instructions; 0x1000 / 4],
     pub last_instruction_type: InstructionType,
     pub instruction_type: InstructionType,
     pub pipeline_full: bool,
     pub branch_state: BranchState,
     pub broken: bool,
+    pub running: bool,
     pub halted: bool,
     pub sync_point: bool,
     pub cycle_counter: u64,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i_array",
+        deserialize_with = "savestates::deserialize_m128i_array"
+    )]
     pub shuffle: [__m128i; 16],
     pub gpr: [u32; 32],
-    pub vpr: [u128; 32],
+    #[serde(
+        serialize_with = "savestates::serialize_m128i_array",
+        deserialize_with = "savestates::deserialize_m128i_array"
+    )]
+    pub vpr: [__m128i; 32],
+    #[serde(with = "serde_big_array::BigArray")]
     pub reciprocals: [u16; 512],
+    #[serde(with = "serde_big_array::BigArray")]
     pub inverse_square_roots: [u16; 512],
-    pub vcol: std::arch::x86_64::__m128i,
-    pub vcoh: std::arch::x86_64::__m128i,
-    pub vccl: std::arch::x86_64::__m128i,
-    pub vcch: std::arch::x86_64::__m128i,
-    pub vce: std::arch::x86_64::__m128i,
-    pub accl: std::arch::x86_64::__m128i,
-    pub accm: std::arch::x86_64::__m128i,
-    pub acch: std::arch::x86_64::__m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub vcol: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub vcoh: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub vccl: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub vcch: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub vce: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub accl: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub accm: __m128i,
+    #[serde(
+        serialize_with = "savestates::serialize_m128i",
+        deserialize_with = "savestates::deserialize_m128i"
+    )]
+    pub acch: __m128i,
     pub divdp: bool,
     pub divin: i16,
     pub divout: i16,
+    #[serde(skip, default = "savestates::default_instructions")]
     pub special_instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub regimm_instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub cop0_instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub cop2_instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub lwc2_instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub swc2_instrs: [fn(&mut device::Device, u32); 32],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub instrs: [fn(&mut device::Device, u32); 64],
+    #[serde(skip, default = "savestates::default_instructions")]
     pub vec_instrs: [fn(&mut device::Device, u32); 64],
 }
 
@@ -66,6 +126,7 @@ pub fn in_delay_slot_taken(device: &device::Device) -> bool {
 pub fn run(device: &mut device::Device) -> u64 {
     device.rsp.cpu.broken = false;
     device.rsp.cpu.cycle_counter = 0;
+    device.rsp.cpu.running = true;
     while !device.rsp.cpu.sync_point {
         device.rsp.cpu.instruction_type = InstructionType::Su;
         device.rsp.cpu.gpr[0] = 0; // gpr 0 is read only
@@ -127,6 +188,7 @@ pub fn run(device: &mut device::Device) -> u64 {
             }
         }
     }
+    device.rsp.cpu.running = false;
     (device.rsp.cpu.cycle_counter as f64 * 1.5) as u64 // converting RCP clock to CPU clock
 }
 
@@ -160,62 +222,7 @@ pub fn decode_opcode(device: &device::Device, opcode: u32) -> fn(&mut device::De
     }
 }
 
-pub fn init(device: &mut device::Device) {
-    device.rsp.cpu.reciprocals[0] = u16::MAX;
-    let mut index = 1;
-    while index < 512 {
-        let a = (index + 512) as u64;
-        let b = (1_u64 << 34) / a;
-        device.rsp.cpu.reciprocals[index] = ((b + 1) >> 8) as u16;
-        index += 1;
-    }
-
-    index = 0;
-    while index < 512 {
-        let mut shift = 0;
-        if index % 2 == 1 {
-            shift = 1
-        }
-        let a = ((index + 512) >> shift) as u64;
-        let mut b = (1 << 17) as u64;
-        //find the largest b where b < 1.0 / sqrt(a)
-        while a * (b + 1) * (b + 1) < (1_u64 << 44) {
-            b += 1;
-        }
-        device.rsp.cpu.inverse_square_roots[index] = (b >> 1) as u16;
-        index += 1;
-    }
-
-    device.rsp.cpu.shuffle = unsafe {
-        [
-            //vector
-            _mm_set_epi8(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0), //01234567
-            _mm_set_epi8(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0), //01234567
-            //scalar quarter
-            _mm_set_epi8(15, 14, 15, 14, 11, 10, 11, 10, 7, 6, 7, 6, 3, 2, 3, 2), //00224466
-            _mm_set_epi8(13, 12, 13, 12, 9, 8, 9, 8, 5, 4, 5, 4, 1, 0, 1, 0),     //11335577
-            //scalar half
-            _mm_set_epi8(15, 14, 15, 14, 15, 14, 15, 14, 7, 6, 7, 6, 7, 6, 7, 6), //00004444
-            _mm_set_epi8(13, 12, 13, 12, 13, 12, 13, 12, 5, 4, 5, 4, 5, 4, 5, 4), //11115555
-            _mm_set_epi8(11, 10, 11, 10, 11, 10, 11, 10, 3, 2, 3, 2, 3, 2, 3, 2), //22226666
-            _mm_set_epi8(9, 8, 9, 8, 9, 8, 9, 8, 1, 0, 1, 0, 1, 0, 1, 0),         //33337777
-            //scalar whole
-            _mm_set_epi8(
-                15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14,
-            ), //00000000
-            _mm_set_epi8(
-                13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12,
-            ), //11111111
-            _mm_set_epi8(
-                11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10,
-            ), //22222222
-            _mm_set_epi8(9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8), //33333333
-            _mm_set_epi8(7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6), //44444444
-            _mm_set_epi8(5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4), //55555555
-            _mm_set_epi8(3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2), //66666666
-            _mm_set_epi8(1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0), //77777777
-        ]
-    };
+pub fn map_instructions(device: &mut device::Device) {
     device.rsp.cpu.instrs = [
         device::rsp_su_instructions::reserved, // SPECIAL
         device::rsp_su_instructions::reserved, // REGIMM
@@ -284,70 +291,70 @@ pub fn init(device: &mut device::Device) {
     ];
 
     device.rsp.cpu.special_instrs = [
-        device::rsp_su_instructions::sll,      // 0
-        device::rsp_su_instructions::reserved, // 1
-        device::rsp_su_instructions::srl,      // 2
-        device::rsp_su_instructions::sra,      // 3
-        device::rsp_su_instructions::sllv,     // 4
-        device::rsp_su_instructions::reserved, // 5
-        device::rsp_su_instructions::srlv,     // 6
-        device::rsp_su_instructions::srav,     // 7
-        device::rsp_su_instructions::jr,       // 8
-        device::rsp_su_instructions::jalr,     // 9
-        device::rsp_su_instructions::reserved, // 10
-        device::rsp_su_instructions::reserved, // 11
-        device::rsp_su_instructions::reserved, // 12
-        device::rsp_su_instructions::break_,   // 13
-        device::rsp_su_instructions::reserved, // 14
-        device::rsp_su_instructions::reserved, // 15
-        device::rsp_su_instructions::reserved, // 16
-        device::rsp_su_instructions::reserved, // 17
-        device::rsp_su_instructions::reserved, // 18
-        device::rsp_su_instructions::reserved, // 19
-        device::rsp_su_instructions::reserved, // 20
-        device::rsp_su_instructions::reserved, // 21
-        device::rsp_su_instructions::reserved, // 22
-        device::rsp_su_instructions::reserved, // 23
-        device::rsp_su_instructions::reserved, // 24
-        device::rsp_su_instructions::reserved, // 25
-        device::rsp_su_instructions::reserved, // 26
-        device::rsp_su_instructions::reserved, // 27
-        device::rsp_su_instructions::reserved, // 28
-        device::rsp_su_instructions::reserved, // 29
-        device::rsp_su_instructions::reserved, // 30
-        device::rsp_su_instructions::reserved, // 31
-        device::rsp_su_instructions::add,      // 32
-        device::rsp_su_instructions::addu,     // 33
-        device::rsp_su_instructions::sub,      // 34
-        device::rsp_su_instructions::subu,     // 35
-        device::rsp_su_instructions::and,      // 36
-        device::rsp_su_instructions::or,       // 37
-        device::rsp_su_instructions::xor,      // 38
-        device::rsp_su_instructions::nor,      // 39
-        device::rsp_su_instructions::reserved, // 40
-        device::rsp_su_instructions::reserved, // 41
-        device::rsp_su_instructions::slt,      // 42
-        device::rsp_su_instructions::sltu,     // 43
-        device::rsp_su_instructions::reserved, // 44
-        device::rsp_su_instructions::reserved, // 45
-        device::rsp_su_instructions::reserved, // 46
-        device::rsp_su_instructions::reserved, // 47
-        device::rsp_su_instructions::reserved, // 48
-        device::rsp_su_instructions::reserved, // 49
-        device::rsp_su_instructions::reserved, // 50
-        device::rsp_su_instructions::reserved, // 51
-        device::rsp_su_instructions::reserved, // 52
-        device::rsp_su_instructions::reserved, // 53
-        device::rsp_su_instructions::reserved, // 54
-        device::rsp_su_instructions::reserved, // 55
-        device::rsp_su_instructions::reserved, // 56
-        device::rsp_su_instructions::reserved, // 57
-        device::rsp_su_instructions::reserved, // 58
-        device::rsp_su_instructions::reserved, // 59
-        device::rsp_su_instructions::reserved, // 60
-        device::rsp_su_instructions::reserved, // 61
-        device::rsp_su_instructions::reserved, // 62
-        device::rsp_su_instructions::reserved, // 63
+        device::rsp_su_instructions::sll,              // 0
+        device::rsp_su_instructions::special_reserved, // 1
+        device::rsp_su_instructions::srl,              // 2
+        device::rsp_su_instructions::sra,              // 3
+        device::rsp_su_instructions::sllv,             // 4
+        device::rsp_su_instructions::special_reserved, // 5
+        device::rsp_su_instructions::srlv,             // 6
+        device::rsp_su_instructions::srav,             // 7
+        device::rsp_su_instructions::jr,               // 8
+        device::rsp_su_instructions::jalr,             // 9
+        device::rsp_su_instructions::special_reserved, // 10
+        device::rsp_su_instructions::special_reserved, // 11
+        device::rsp_su_instructions::special_reserved, // 12
+        device::rsp_su_instructions::break_,           // 13
+        device::rsp_su_instructions::special_reserved, // 14
+        device::rsp_su_instructions::special_reserved, // 15
+        device::rsp_su_instructions::special_reserved, // 16
+        device::rsp_su_instructions::special_reserved, // 17
+        device::rsp_su_instructions::special_reserved, // 18
+        device::rsp_su_instructions::special_reserved, // 19
+        device::rsp_su_instructions::special_reserved, // 20
+        device::rsp_su_instructions::special_reserved, // 21
+        device::rsp_su_instructions::special_reserved, // 22
+        device::rsp_su_instructions::special_reserved, // 23
+        device::rsp_su_instructions::special_reserved, // 24
+        device::rsp_su_instructions::special_reserved, // 25
+        device::rsp_su_instructions::special_reserved, // 26
+        device::rsp_su_instructions::special_reserved, // 27
+        device::rsp_su_instructions::special_reserved, // 28
+        device::rsp_su_instructions::special_reserved, // 29
+        device::rsp_su_instructions::special_reserved, // 30
+        device::rsp_su_instructions::special_reserved, // 31
+        device::rsp_su_instructions::add,              // 32
+        device::rsp_su_instructions::addu,             // 33
+        device::rsp_su_instructions::sub,              // 34
+        device::rsp_su_instructions::subu,             // 35
+        device::rsp_su_instructions::and,              // 36
+        device::rsp_su_instructions::or,               // 37
+        device::rsp_su_instructions::xor,              // 38
+        device::rsp_su_instructions::nor,              // 39
+        device::rsp_su_instructions::special_reserved, // 40
+        device::rsp_su_instructions::special_reserved, // 41
+        device::rsp_su_instructions::slt,              // 42
+        device::rsp_su_instructions::sltu,             // 43
+        device::rsp_su_instructions::special_reserved, // 44
+        device::rsp_su_instructions::special_reserved, // 45
+        device::rsp_su_instructions::special_reserved, // 46
+        device::rsp_su_instructions::special_reserved, // 47
+        device::rsp_su_instructions::special_reserved, // 48
+        device::rsp_su_instructions::special_reserved, // 49
+        device::rsp_su_instructions::special_reserved, // 50
+        device::rsp_su_instructions::special_reserved, // 51
+        device::rsp_su_instructions::special_reserved, // 52
+        device::rsp_su_instructions::special_reserved, // 53
+        device::rsp_su_instructions::special_reserved, // 54
+        device::rsp_su_instructions::special_reserved, // 55
+        device::rsp_su_instructions::special_reserved, // 56
+        device::rsp_su_instructions::special_reserved, // 57
+        device::rsp_su_instructions::special_reserved, // 58
+        device::rsp_su_instructions::special_reserved, // 59
+        device::rsp_su_instructions::special_reserved, // 60
+        device::rsp_su_instructions::special_reserved, // 61
+        device::rsp_su_instructions::special_reserved, // 62
+        device::rsp_su_instructions::special_reserved, // 63
     ];
 
     device.rsp.cpu.regimm_instrs = [
@@ -592,3 +599,63 @@ pub fn init(device: &mut device::Device) {
         device::rsp_vu_instructions::vnop,  // 63
     ]
 }
+
+pub fn init(device: &mut device::Device) {
+    device.rsp.cpu.reciprocals[0] = u16::MAX;
+    let mut index = 1;
+    while index < 512 {
+        let a = (index + 512) as u64;
+        let b = (1_u64 << 34) / a;
+        device.rsp.cpu.reciprocals[index] = ((b + 1) >> 8) as u16;
+        index += 1;
+    }
+
+    index = 0;
+    while index < 512 {
+        let mut shift = 0;
+        if index % 2 == 1 {
+            shift = 1
+        }
+        let a = ((index + 512) >> shift) as u64;
+        let mut b = (1 << 17) as u64;
+        //find the largest b where b < 1.0 / sqrt(a)
+        while a * (b + 1) * (b + 1) < (1_u64 << 44) {
+            b += 1;
+        }
+        device.rsp.cpu.inverse_square_roots[index] = (b >> 1) as u16;
+        index += 1;
+    }
+
+    device.rsp.cpu.shuffle = unsafe {
+        [
+            //vector
+            _mm_set_epi8(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0), //01234567
+            _mm_set_epi8(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0), //01234567
+            //scalar quarter
+            _mm_set_epi8(15, 14, 15, 14, 11, 10, 11, 10, 7, 6, 7, 6, 3, 2, 3, 2), //00224466
+            _mm_set_epi8(13, 12, 13, 12, 9, 8, 9, 8, 5, 4, 5, 4, 1, 0, 1, 0),     //11335577
+            //scalar half
+            _mm_set_epi8(15, 14, 15, 14, 15, 14, 15, 14, 7, 6, 7, 6, 7, 6, 7, 6), //00004444
+            _mm_set_epi8(13, 12, 13, 12, 13, 12, 13, 12, 5, 4, 5, 4, 5, 4, 5, 4), //11115555
+            _mm_set_epi8(11, 10, 11, 10, 11, 10, 11, 10, 3, 2, 3, 2, 3, 2, 3, 2), //22226666
+            _mm_set_epi8(9, 8, 9, 8, 9, 8, 9, 8, 1, 0, 1, 0, 1, 0, 1, 0),         //33337777
+            //scalar whole
+            _mm_set_epi8(
+                15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14, 15, 14,
+            ), //00000000
+            _mm_set_epi8(
+                13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12, 13, 12,
+            ), //11111111
+            _mm_set_epi8(
+                11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10,
+            ), //22222222
+            _mm_set_epi8(9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8), //33333333
+            _mm_set_epi8(7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6), //44444444
+            _mm_set_epi8(5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4), //55555555
+            _mm_set_epi8(3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2), //66666666
+            _mm_set_epi8(1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0), //77777777
+        ]
+    };
+
+    map_instructions(device);
+}

src/device/rsp_interface.rs

@@ -1,73 +1,74 @@
 use crate::device;
+use crate::ui;
 
-pub const SP_MEM_ADDR_REG: u32 = 0;
-pub const SP_DRAM_ADDR_REG: u32 = 1;
-pub const SP_RD_LEN_REG: u32 = 2;
-pub const SP_WR_LEN_REG: u32 = 3;
+const SP_MEM_ADDR_REG: u32 = 0;
+const SP_DRAM_ADDR_REG: u32 = 1;
+const SP_RD_LEN_REG: u32 = 2;
+const SP_WR_LEN_REG: u32 = 3;
 pub const SP_STATUS_REG: u32 = 4;
-pub const SP_DMA_FULL_REG: u32 = 5;
-pub const SP_DMA_BUSY_REG: u32 = 6;
-pub const SP_SEMAPHORE_REG: u32 = 7;
+const SP_DMA_FULL_REG: u32 = 5;
+const SP_DMA_BUSY_REG: u32 = 6;
+const SP_SEMAPHORE_REG: u32 = 7;
 pub const SP_REGS_COUNT: u32 = 8;
 
 pub const SP_PC_REG: u32 = 0;
-//pub const SP_IBIST_REG: u32 = 1;
+//const SP_IBIST_REG: u32 = 1;
 pub const SP_REGS2_COUNT: u32 = 2;
 
 /* SP_STATUS - read */
 pub const SP_STATUS_HALT: u32 = 1 << 0;
-pub const SP_STATUS_BROKE: u32 = 1 << 1;
-pub const SP_STATUS_DMA_BUSY: u32 = 1 << 2;
-pub const SP_STATUS_DMA_FULL: u32 = 1 << 3;
-//pub const SP_STATUS_IO_FULL: u32 = 1 << 4;
-pub const SP_STATUS_SSTEP: u32 = 1 << 5;
-pub const SP_STATUS_INTR_BREAK: u32 = 1 << 6;
-pub const SP_STATUS_SIG0: u32 = 1 << 7;
-pub const SP_STATUS_SIG1: u32 = 1 << 8;
-pub const SP_STATUS_SIG2: u32 = 1 << 9;
-pub const SP_STATUS_SIG3: u32 = 1 << 10;
-pub const SP_STATUS_SIG4: u32 = 1 << 11;
-pub const SP_STATUS_SIG5: u32 = 1 << 12;
-pub const SP_STATUS_SIG6: u32 = 1 << 13;
-pub const SP_STATUS_SIG7: u32 = 1 << 14;
+const SP_STATUS_BROKE: u32 = 1 << 1;
+const SP_STATUS_DMA_BUSY: u32 = 1 << 2;
+const SP_STATUS_DMA_FULL: u32 = 1 << 3;
+//const SP_STATUS_IO_FULL: u32 = 1 << 4;
+const SP_STATUS_SSTEP: u32 = 1 << 5;
+const SP_STATUS_INTR_BREAK: u32 = 1 << 6;
+const SP_STATUS_SIG0: u32 = 1 << 7;
+const SP_STATUS_SIG1: u32 = 1 << 8;
+const SP_STATUS_SIG2: u32 = 1 << 9;
+const SP_STATUS_SIG3: u32 = 1 << 10;
+const SP_STATUS_SIG4: u32 = 1 << 11;
+const SP_STATUS_SIG5: u32 = 1 << 12;
+const SP_STATUS_SIG6: u32 = 1 << 13;
+const SP_STATUS_SIG7: u32 = 1 << 14;
 
 /* SP_STATUS - write */
-pub const SP_CLR_HALT: u32 = 1 << 0;
+const SP_CLR_HALT: u32 = 1 << 0;
 pub const SP_SET_HALT: u32 = 1 << 1;
-pub const SP_CLR_BROKE: u32 = 1 << 2;
-pub const SP_CLR_INTR: u32 = 1 << 3;
-pub const SP_SET_INTR: u32 = 1 << 4;
-pub const SP_CLR_SSTEP: u32 = 1 << 5;
-pub const SP_SET_SSTEP: u32 = 1 << 6;
-pub const SP_CLR_INTR_BREAK: u32 = 1 << 7;
-pub const SP_SET_INTR_BREAK: u32 = 1 << 8;
-pub const SP_CLR_SIG0: u32 = 1 << 9;
-pub const SP_SET_SIG0: u32 = 1 << 10;
-pub const SP_CLR_SIG1: u32 = 1 << 11;
-pub const SP_SET_SIG1: u32 = 1 << 12;
-pub const SP_CLR_SIG2: u32 = 1 << 13;
-pub const SP_SET_SIG2: u32 = 1 << 14;
-pub const SP_CLR_SIG3: u32 = 1 << 15;
-pub const SP_SET_SIG3: u32 = 1 << 16;
-pub const SP_CLR_SIG4: u32 = 1 << 17;
-pub const SP_SET_SIG4: u32 = 1 << 18;
-pub const SP_CLR_SIG5: u32 = 1 << 19;
-pub const SP_SET_SIG5: u32 = 1 << 20;
-pub const SP_CLR_SIG6: u32 = 1 << 21;
-pub const SP_SET_SIG6: u32 = 1 << 22;
-pub const SP_CLR_SIG7: u32 = 1 << 23;
-pub const SP_SET_SIG7: u32 = 1 << 24;
+const SP_CLR_BROKE: u32 = 1 << 2;
+const SP_CLR_INTR: u32 = 1 << 3;
+const SP_SET_INTR: u32 = 1 << 4;
+const SP_CLR_SSTEP: u32 = 1 << 5;
+const SP_SET_SSTEP: u32 = 1 << 6;
+const SP_CLR_INTR_BREAK: u32 = 1 << 7;
+const SP_SET_INTR_BREAK: u32 = 1 << 8;
+const SP_CLR_SIG0: u32 = 1 << 9;
+const SP_SET_SIG0: u32 = 1 << 10;
+const SP_CLR_SIG1: u32 = 1 << 11;
+const SP_SET_SIG1: u32 = 1 << 12;
+const SP_CLR_SIG2: u32 = 1 << 13;
+const SP_SET_SIG2: u32 = 1 << 14;
+const SP_CLR_SIG3: u32 = 1 << 15;
+const SP_SET_SIG3: u32 = 1 << 16;
+const SP_CLR_SIG4: u32 = 1 << 17;
+const SP_SET_SIG4: u32 = 1 << 18;
+const SP_CLR_SIG5: u32 = 1 << 19;
+const SP_SET_SIG5: u32 = 1 << 20;
+const SP_CLR_SIG6: u32 = 1 << 21;
+const SP_SET_SIG6: u32 = 1 << 22;
+const SP_CLR_SIG7: u32 = 1 << 23;
+const SP_SET_SIG7: u32 = 1 << 24;
 
-pub const RSP_MEM_MASK: usize = 0x1FFF;
+const RSP_MEM_MASK: usize = 0x1FFF;
 
-#[derive(PartialEq, Copy, Clone)]
+#[derive(PartialEq, Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub enum DmaDir {
     None,
     Write,
     Read,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct RspDma {
     pub dir: DmaDir,
     pub length: u32,
@@ -75,12 +76,16 @@ pub struct RspDma {
     pub dramaddr: u32,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Rsp {
     pub cpu: device::rsp_cpu::Cpu,
     pub regs: [u32; SP_REGS_COUNT as usize],
     pub regs2: [u32; SP_REGS2_COUNT as usize],
+    #[serde(with = "serde_big_array::BigArray")]
     pub mem: [u8; 0x2000],
     pub fifo: [RspDma; 2],
+    pub last_status_value: u32,
+    pub run_after_dma: bool,
 }
 
 pub fn read_mem_fast(
@@ -99,8 +104,10 @@ pub fn read_mem_fast(
 pub fn read_mem(
     device: &mut device::Device,
     address: u64,
-    _access_size: device::memory::AccessSize,
+    access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, access_size as u64 / 4);
+
     let masked_address = address as usize & RSP_MEM_MASK;
     u32::from_be_bytes(
         device.rsp.mem[masked_address..masked_address + 4]
@@ -129,7 +136,7 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, _mask: u
     // SH/SB are broken: They overwrite the whole 32 bit, filling everything that isn't written with zeroes
 }
 
-pub fn do_dma(device: &mut device::Device, dma: RspDma) {
+fn do_dma(device: &mut device::Device, dma: RspDma) {
     let l = dma.length;
 
     let length = ((l & 0xfff) | 7) + 1;
@@ -140,6 +147,7 @@ pub fn do_dma(device: &mut device::Device, dma: RspDma) {
     let mut dram_addr = dma.dramaddr & 0xfffff8;
     let offset = dma.memaddr & 0x1000;
 
+    ui::video::check_framebuffers(dram_addr);
     if dma.dir == DmaDir::Read {
         let mut j = 0;
         while j < count {
@@ -197,15 +205,14 @@ pub fn do_dma(device: &mut device::Device, dma: RspDma) {
 
     device::events::create_event(
         device,
-        device::events::EventType::SPDma,
+        device::events::EVENT_TYPE_SPDMA,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize]
             + device::rdram::rdram_calculate_cycles((count * length) as u64)
             + 9,
-        device::rsp_interface::fifo_pop,
     );
 }
 
-pub fn fifo_push(device: &mut device::Device, dir: DmaDir) {
+fn fifo_push(device: &mut device::Device, dir: DmaDir) {
     if device.rsp.regs[SP_DMA_FULL_REG as usize] != 0 {
         panic!("RSP DMA already full")
     }
@@ -249,7 +256,11 @@ pub fn fifo_pop(device: &mut device::Device) {
         do_dma(device, device.rsp.fifo[0])
     } else {
         device.rsp.regs[SP_DMA_BUSY_REG as usize] = 0;
-        device.rsp.regs[SP_STATUS_REG as usize] &= !SP_STATUS_DMA_BUSY
+        device.rsp.regs[SP_STATUS_REG as usize] &= !SP_STATUS_DMA_BUSY;
+        if device.rsp.run_after_dma {
+            device.rsp.run_after_dma = false;
+            do_task(device);
+        }
     }
 }
 
@@ -258,10 +269,34 @@ pub fn read_regs(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    if !device.rsp.cpu.running {
+        device::cop0::add_cycles(device, 20);
+    }
     let reg = (address & 0xFFFF) >> 2;
     match reg as u32 {
+        SP_DMA_BUSY_REG | SP_DMA_FULL_REG => {
+            if device.rsp.regs[reg as usize] != 0 {
+                device.rsp.cpu.sync_point = true;
+            }
+            device.rsp.regs[reg as usize]
+        }
+        SP_STATUS_REG => {
+            let value = device.rsp.regs[reg as usize]
+                & !(SP_STATUS_HALT | SP_STATUS_BROKE | SP_STATUS_INTR_BREAK);
+            if value == device.rsp.last_status_value && value != 0 {
+                device.rsp.cpu.sync_point = true;
+            }
+            if value & (SP_STATUS_DMA_BUSY | SP_STATUS_DMA_FULL) != 0 {
+                device.rsp.cpu.sync_point = true;
+            }
+            device.rsp.last_status_value = value;
+            device.rsp.regs[reg as usize]
+        }
         SP_SEMAPHORE_REG => {
             let value = device.rsp.regs[reg as usize];
+            if value == 1 {
+                device.rsp.cpu.sync_point = true;
+            }
             device.rsp.regs[reg as usize] = 1;
             value
         }
@@ -284,9 +319,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
         SP_SEMAPHORE_REG => {
             device::memory::masked_write_32(&mut device.rsp.regs[reg as usize], 0, mask)
         }
-        _ => {
-            device::memory::masked_write_32(&mut device.rsp.regs[reg as usize], value, mask);
-        }
+        _ => device::memory::masked_write_32(&mut device.rsp.regs[reg as usize], value, mask),
     }
 }
 
@@ -295,6 +328,7 @@ pub fn read_regs2(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, 20);
     device.rsp.regs2[((address & 0xFFFF) >> 2) as usize]
 }
 
@@ -312,7 +346,7 @@ pub fn write_regs2(device: &mut device::Device, address: u64, value: u32, mask:
     }
 }
 
-pub fn update_sp_status(device: &mut device::Device, w: u32) {
+fn update_sp_status(device: &mut device::Device, w: u32) {
     let was_halted = device.rsp.regs[SP_STATUS_REG as usize] & SP_STATUS_HALT != 0;
 
     /* clear / set halt */
@@ -320,7 +354,7 @@ pub fn update_sp_status(device: &mut device::Device, w: u32) {
         device.rsp.regs[SP_STATUS_REG as usize] &= !SP_STATUS_HALT
     }
     if w & SP_SET_HALT != 0 && w & SP_CLR_HALT == 0 {
-        device::events::remove_event(device, device::events::EventType::SP);
+        device::events::remove_event(device, device::events::EVENT_TYPE_SP);
         device.rsp.regs[SP_STATUS_REG as usize] |= SP_STATUS_HALT
     }
 
@@ -335,7 +369,7 @@ pub fn update_sp_status(device: &mut device::Device, w: u32) {
     }
     /* set SP interrupt */
     if (w & SP_SET_INTR) != 0 && (w & SP_CLR_INTR) == 0 {
-        device::mi::schedule_rcp_interrupt(device, device::mi::MI_INTR_SP);
+        device::mi::set_rcp_interrupt(device, device::mi::MI_INTR_SP);
     }
 
     /* clear / set single step */
@@ -421,20 +455,24 @@ pub fn update_sp_status(device: &mut device::Device, w: u32) {
     if device.rsp.regs[SP_STATUS_REG as usize] & SP_STATUS_HALT == 0 && was_halted {
         device.rsp.cpu.broken = false;
         device.rsp.cpu.halted = false;
-        device.rsp.cpu.sync_point = false;
         do_task(device);
     }
 }
 
-pub fn do_task(device: &mut device::Device) {
-    let timer = device::rsp_cpu::run(device);
+fn do_task(device: &mut device::Device) {
+    device.rsp.cpu.sync_point = false;
+    device.rsp.last_status_value = 0;
+    if device.rsp.regs[SP_DMA_BUSY_REG as usize] == 1 {
+        device.rsp.run_after_dma = true
+    } else {
+        let timer = device::rsp_cpu::run(device);
 
-    device::events::create_event(
-        device,
-        device::events::EventType::SP,
-        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + timer,
-        rsp_event,
-    )
+        device::events::create_event(
+            device,
+            device::events::EVENT_TYPE_SP,
+            device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + timer,
+        )
+    }
 }
 
 pub fn rsp_event(device: &mut device::Device) {
@@ -450,7 +488,6 @@ pub fn rsp_event(device: &mut device::Device) {
         device.rsp.regs[SP_STATUS_REG as usize] |= SP_STATUS_HALT;
         return;
     }
-    device.rsp.cpu.sync_point = false;
     do_task(device)
 }
 

src/device/rsp_su_instructions.rs

@@ -1,66 +1,181 @@
+#[cfg(target_arch = "aarch64")]
+use device::__m128i;
+#[cfg(target_arch = "aarch64")]
+include!(concat!(env!("OUT_DIR"), "/simd_bindings.rs"));
+#[cfg(target_arch = "aarch64")]
+include!("../compat/aarch64.rs");
 use crate::device;
+#[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
-pub fn rd(opcode: u32) -> u32 {
+fn rd(opcode: u32) -> u32 {
     (opcode >> 11) & 0x1F
 }
 
-pub fn rs(opcode: u32) -> u32 {
+fn rs(opcode: u32) -> u32 {
     (opcode >> 21) & 0x1F
 }
 
-pub fn rt(opcode: u32) -> u32 {
+fn rt(opcode: u32) -> u32 {
     (opcode >> 16) & 0x1F
 }
 
-pub fn sa(opcode: u32) -> u32 {
+fn sa(opcode: u32) -> u32 {
     (opcode >> 6) & 0x1F
 }
 
-pub fn imm(opcode: u32) -> u16 {
+fn imm(opcode: u32) -> u16 {
     opcode as u16
 }
 
-pub fn se16(value: i16) -> u32 {
+fn se16(value: i16) -> u32 {
     value as i32 as u32
 }
 
-pub fn voffset(opcode: u32) -> u8 {
+fn voffset(opcode: u32) -> u8 {
     (opcode & 0x7F) as u8
 }
 
-pub fn velement(opcode: u32) -> u8 {
+fn velement(opcode: u32) -> u8 {
     ((opcode >> 7) & 0xF) as u8
 }
 
-pub fn sign_extend_7bit_offset(offset: u8, shift_amount: u32) -> u32 {
+fn sign_extend_7bit_offset(offset: u8, shift_amount: u32) -> u32 {
     let soffset = (((offset << 1) & 0x80) | offset) as i8;
 
     (((soffset) as i32) as u32) << shift_amount
 }
 
-pub fn modify_vpr_byte(vpr: &mut u128, value: u8, element: u8) {
-    let pos = 15 - (element & 15);
-    let mask = 0xFF << (pos * 8);
-    *vpr &= !mask;
-    *vpr |= (value as u128) << (pos * 8);
+fn modify_vpr8(vpr: &mut __m128i, element: u8, value: u8) {
+    unsafe {
+        *vpr = match element & 15 {
+            0 => _mm_insert_epi8(*vpr, value as i32, 15),
+            1 => _mm_insert_epi8(*vpr, value as i32, 14),
+            2 => _mm_insert_epi8(*vpr, value as i32, 13),
+            3 => _mm_insert_epi8(*vpr, value as i32, 12),
+            4 => _mm_insert_epi8(*vpr, value as i32, 11),
+            5 => _mm_insert_epi8(*vpr, value as i32, 10),
+            6 => _mm_insert_epi8(*vpr, value as i32, 9),
+            7 => _mm_insert_epi8(*vpr, value as i32, 8),
+            8 => _mm_insert_epi8(*vpr, value as i32, 7),
+            9 => _mm_insert_epi8(*vpr, value as i32, 6),
+            10 => _mm_insert_epi8(*vpr, value as i32, 5),
+            11 => _mm_insert_epi8(*vpr, value as i32, 4),
+            12 => _mm_insert_epi8(*vpr, value as i32, 3),
+            13 => _mm_insert_epi8(*vpr, value as i32, 2),
+            14 => _mm_insert_epi8(*vpr, value as i32, 1),
+            15 => _mm_insert_epi8(*vpr, value as i32, 0),
+            _ => unreachable!(),
+        };
+    }
 }
 
-pub fn get_vpr_byte(vpr: u128, element: u8) -> u8 {
-    let pos = 15 - (element & 15);
-    (vpr >> (pos * 8)) as u8
+fn get_vpr8(vpr: __m128i, element: u8) -> u8 {
+    unsafe {
+        match element & 15 {
+            0 => _mm_extract_epi8(vpr, 15) as u8,
+            1 => _mm_extract_epi8(vpr, 14) as u8,
+            2 => _mm_extract_epi8(vpr, 13) as u8,
+            3 => _mm_extract_epi8(vpr, 12) as u8,
+            4 => _mm_extract_epi8(vpr, 11) as u8,
+            5 => _mm_extract_epi8(vpr, 10) as u8,
+            6 => _mm_extract_epi8(vpr, 9) as u8,
+            7 => _mm_extract_epi8(vpr, 8) as u8,
+            8 => _mm_extract_epi8(vpr, 7) as u8,
+            9 => _mm_extract_epi8(vpr, 6) as u8,
+            10 => _mm_extract_epi8(vpr, 5) as u8,
+            11 => _mm_extract_epi8(vpr, 4) as u8,
+            12 => _mm_extract_epi8(vpr, 3) as u8,
+            13 => _mm_extract_epi8(vpr, 2) as u8,
+            14 => _mm_extract_epi8(vpr, 1) as u8,
+            15 => _mm_extract_epi8(vpr, 0) as u8,
+            _ => unreachable!(),
+        }
+    }
 }
 
-pub fn modify_vpr_element(vpr: &mut u128, value: u16, element: u8) {
-    let pos = 7 - (element & 7);
-    let mask = 0xFFFF << (pos * 16);
-    *vpr &= !mask;
-    *vpr |= (value as u128) << (pos * 16);
+pub fn modify_vpr16(vpr: &mut __m128i, element: u8, value: u16) {
+    unsafe {
+        *vpr = match element & 7 {
+            0 => _mm_insert_epi16(*vpr, value as i32, 7),
+            1 => _mm_insert_epi16(*vpr, value as i32, 6),
+            2 => _mm_insert_epi16(*vpr, value as i32, 5),
+            3 => _mm_insert_epi16(*vpr, value as i32, 4),
+            4 => _mm_insert_epi16(*vpr, value as i32, 3),
+            5 => _mm_insert_epi16(*vpr, value as i32, 2),
+            6 => _mm_insert_epi16(*vpr, value as i32, 1),
+            7 => _mm_insert_epi16(*vpr, value as i32, 0),
+            _ => unreachable!(),
+        };
+    }
 }
 
-pub fn get_vpr_element(vpr: u128, element: u8) -> u16 {
-    let pos = 7 - (element & 7);
-    (vpr >> (pos * 16)) as u16
+pub fn get_vpr16(vpr: __m128i, element: u8) -> u16 {
+    unsafe {
+        match element & 7 {
+            0 => _mm_extract_epi16(vpr, 7) as u16,
+            1 => _mm_extract_epi16(vpr, 6) as u16,
+            2 => _mm_extract_epi16(vpr, 5) as u16,
+            3 => _mm_extract_epi16(vpr, 4) as u16,
+            4 => _mm_extract_epi16(vpr, 3) as u16,
+            5 => _mm_extract_epi16(vpr, 2) as u16,
+            6 => _mm_extract_epi16(vpr, 1) as u16,
+            7 => _mm_extract_epi16(vpr, 0) as u16,
+            _ => unreachable!(),
+        }
+    }
+}
+
+fn modify_vpr32(vpr: &mut __m128i, element: u8, value: u32) {
+    unsafe {
+        *vpr = match element & 3 {
+            0 => _mm_insert_epi32(*vpr, value as i32, 3),
+            1 => _mm_insert_epi32(*vpr, value as i32, 2),
+            2 => _mm_insert_epi32(*vpr, value as i32, 1),
+            3 => _mm_insert_epi32(*vpr, value as i32, 0),
+            _ => unreachable!(),
+        };
+    }
+}
+
+fn get_vpr32(vpr: __m128i, element: u8) -> u32 {
+    unsafe {
+        match element & 3 {
+            0 => _mm_extract_epi32(vpr, 3) as u32,
+            1 => _mm_extract_epi32(vpr, 2) as u32,
+            2 => _mm_extract_epi32(vpr, 1) as u32,
+            3 => _mm_extract_epi32(vpr, 0) as u32,
+            _ => unreachable!(),
+        }
+    }
+}
+
+fn modify_vpr64(vpr: &mut __m128i, element: u8, value: u64) {
+    unsafe {
+        *vpr = match element & 1 {
+            0 => _mm_insert_epi64(*vpr, value as i64, 1),
+            1 => _mm_insert_epi64(*vpr, value as i64, 0),
+            _ => unreachable!(),
+        };
+    }
+}
+
+fn get_vpr64(vpr: __m128i, element: u8) -> u64 {
+    unsafe {
+        match element & 1 {
+            0 => _mm_extract_epi64(vpr, 1) as u64,
+            1 => _mm_extract_epi64(vpr, 0) as u64,
+            _ => unreachable!(),
+        }
+    }
+}
+
+fn modify_vpr128(vpr: &mut __m128i, value: u128) {
+    unsafe { *vpr = std::mem::transmute::<u128, __m128i>(value) }
+}
+
+fn get_vpr128(vpr: __m128i) -> u128 {
+    unsafe { std::mem::transmute::<__m128i, u128>(vpr) }
 }
 
 pub fn j(device: &mut device::Device, opcode: u32) {
@@ -437,6 +552,7 @@ pub fn bgezal(device: &mut device::Device, opcode: u32) {
 }
 
 pub fn mfc0(device: &mut device::Device, opcode: u32) {
+    device.rsp.cpu.cycle_counter += 2;
     if rd(opcode) < device::rsp_interface::SP_REGS_COUNT {
         device.rsp.cpu.gpr[rt(opcode) as usize] = device::rsp_interface::read_regs(
             device,
@@ -450,8 +566,6 @@ pub fn mfc0(device: &mut device::Device, opcode: u32) {
             device::memory::AccessSize::Word,
         )
     }
-    device.rsp.cpu.cycle_counter += 4; // needed for DK64
-    device.rsp.cpu.sync_point = true;
 }
 
 pub fn mtc0(device: &mut device::Device, opcode: u32) {
@@ -477,12 +591,11 @@ pub fn mtc0(device: &mut device::Device, opcode: u32) {
             !device::rsp_interface::SP_STATUS_HALT; // set halt when event happens
         device.rsp.cpu.halted = true // the RSP can halt itself by setting SP_SET_HALT
     }
-    device.rsp.cpu.sync_point = true;
 }
 
 pub fn mfc2(device: &mut device::Device, opcode: u32) {
-    let hi = get_vpr_byte(device.rsp.cpu.vpr[rd(opcode) as usize], velement(opcode));
-    let lo = get_vpr_byte(
+    let hi = get_vpr8(device.rsp.cpu.vpr[rd(opcode) as usize], velement(opcode));
+    let lo = get_vpr8(
         device.rsp.cpu.vpr[rd(opcode) as usize],
         velement(opcode) + 1,
     );
@@ -508,7 +621,7 @@ pub fn cfc2(device: &mut device::Device, opcode: u32) {
             lo = &mut device.rsp.cpu.vce;
         }
         _ => {
-            panic!("unknown ctc2")
+            panic!("unknown cfc2")
         }
     }
 
@@ -520,16 +633,16 @@ pub fn cfc2(device: &mut device::Device, opcode: u32) {
 }
 
 pub fn mtc2(device: &mut device::Device, opcode: u32) {
-    modify_vpr_byte(
+    modify_vpr8(
         &mut device.rsp.cpu.vpr[rd(opcode) as usize],
-        (device.rsp.cpu.gpr[rt(opcode) as usize] >> 8) as u8,
         velement(opcode),
+        (device.rsp.cpu.gpr[rt(opcode) as usize] >> 8) as u8,
     );
     if velement(opcode) != 15 {
-        modify_vpr_byte(
+        modify_vpr8(
             &mut device.rsp.cpu.vpr[rd(opcode) as usize],
-            device.rsp.cpu.gpr[rt(opcode) as usize] as u8,
             velement(opcode) + 1,
+            device.rsp.cpu.gpr[rt(opcode) as usize] as u8,
         );
     }
 }
@@ -574,7 +687,7 @@ pub fn ctc2(device: &mut device::Device, opcode: u32) {
             ),
             _mm_setzero_si128(),
         );
-        *hi = std::arch::x86_64::_mm_cmpeq_epi8(
+        *hi = _mm_cmpeq_epi8(
             _mm_and_si128(
                 _mm_set1_epi8(!(device.rsp.cpu.gpr[rt(opcode) as usize] >> 8) as i8),
                 mask,
@@ -589,10 +702,10 @@ pub fn lbv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 0));
 
     let element = velement(opcode);
-    modify_vpr_byte(
+    modify_vpr8(
         &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-        device.rsp.mem[(address & 0xFFF) as usize],
         element,
+        device.rsp.mem[(address & 0xFFF) as usize],
     );
 }
 
@@ -601,15 +714,25 @@ pub fn lsv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 1));
 
     let mut element = velement(opcode);
-    let end = std::cmp::min(element + 2, 16);
-    while element < end {
-        modify_vpr_byte(
+
+    if element % 2 == 0 {
+        modify_vpr16(
             &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
-            element,
+            element / 2,
+            ((device.rsp.mem[(address & 0xFFF) as usize] as u16) << 8)
+                | (device.rsp.mem[((address + 1) & 0xFFF) as usize] as u16),
         );
-        address += 1;
-        element += 1;
+    } else {
+        let end = std::cmp::min(element + 2, 16);
+        while element < end {
+            modify_vpr8(
+                &mut device.rsp.cpu.vpr[rt(opcode) as usize],
+                element,
+                device.rsp.mem[(address & 0xFFF) as usize],
+            );
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -618,15 +741,28 @@ pub fn llv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 2));
 
     let mut element = velement(opcode);
-    let end = std::cmp::min(element + 4, 16);
-    while element < end {
-        modify_vpr_byte(
+
+    if element % 4 == 0 {
+        let mut value = 0;
+        for i in 0..4 {
+            value |= (device.rsp.mem[((address + i) & 0xFFF) as usize] as u32) << (8 * (3 - i));
+        }
+        modify_vpr32(
             &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
-            element,
+            element / 4,
+            value,
         );
-        address += 1;
-        element += 1;
+    } else {
+        let end = std::cmp::min(element + 4, 16);
+        while element < end {
+            modify_vpr8(
+                &mut device.rsp.cpu.vpr[rt(opcode) as usize],
+                element,
+                device.rsp.mem[(address & 0xFFF) as usize],
+            );
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -635,15 +771,28 @@ pub fn ldv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 3));
 
     let mut element = velement(opcode);
-    let end = std::cmp::min(element + 8, 16);
-    while element < end {
-        modify_vpr_byte(
+
+    if element % 8 == 0 {
+        let mut value = 0;
+        for i in 0..8 {
+            value |= (device.rsp.mem[((address + i) & 0xFFF) as usize] as u64) << (8 * (7 - i));
+        }
+        modify_vpr64(
             &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
-            element,
+            element / 8,
+            value,
         );
-        address += 1;
-        element += 1;
+    } else {
+        let end = std::cmp::min(element + 8, 16);
+        while element < end {
+            modify_vpr8(
+                &mut device.rsp.cpu.vpr[rt(opcode) as usize],
+                element,
+                device.rsp.mem[(address & 0xFFF) as usize],
+            );
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -652,15 +801,24 @@ pub fn lqv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 4));
 
     let mut element = velement(opcode);
-    let end = std::cmp::min(16 + element - ((address & 15) as u8), 16);
-    while element < end {
-        modify_vpr_byte(
-            &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
-            element,
-        );
-        address += 1;
-        element += 1;
+
+    if element == 0 && address % 16 == 0 {
+        let mut value = 0;
+        for i in 0..16 {
+            value |= (device.rsp.mem[((address + i) & 0xFFF) as usize] as u128) << (8 * (15 - i));
+        }
+        modify_vpr128(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value);
+    } else {
+        let end = std::cmp::min(16 + element - ((address & 15) as u8), 16);
+        while element < end {
+            modify_vpr8(
+                &mut device.rsp.cpu.vpr[rt(opcode) as usize],
+                element,
+                device.rsp.mem[(address & 0xFFF) as usize],
+            );
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -670,14 +828,22 @@ pub fn lrv(device: &mut device::Device, opcode: u32) {
 
     let mut element = 16u8.wrapping_sub(((address & 15) as u8).wrapping_sub(velement(opcode)));
     address &= !15;
-    while element < 16 {
-        modify_vpr_byte(
-            &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
-            element,
-        );
-        address += 1;
-        element += 1;
+    if element == 0 {
+        let mut value = 0;
+        for i in 0..16 {
+            value |= (device.rsp.mem[((address + i) & 0xFFF) as usize] as u128) << (8 * (15 - i));
+        }
+        modify_vpr128(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value);
+    } else {
+        while element < 16 {
+            modify_vpr8(
+                &mut device.rsp.cpu.vpr[rt(opcode) as usize],
+                element,
+                device.rsp.mem[(address & 0xFFF) as usize],
+            );
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -687,17 +853,15 @@ pub fn lpv(device: &mut device::Device, opcode: u32) {
 
     let index = ((address & 7) as u8).wrapping_sub(velement(opcode));
     address &= !7;
-    let mut offset: u8 = 0;
-    while offset < 8 {
-        modify_vpr_element(
-            &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            (device.rsp.mem[((address.wrapping_add(((index.wrapping_add(offset)) & 15) as u32))
-                & 0xFFF) as usize] as u16)
-                << 8,
-            offset,
-        );
-        offset += 1;
+    let mut value = 0;
+    for i in 0..8 {
+        value |= (((device.rsp.mem
+            [((address.wrapping_add(((index.wrapping_add(i)) & 15) as u32)) & 0xFFF) as usize]
+            as u16)
+            << 8) as u128)
+            << (16 * (7 - i));
     }
+    modify_vpr128(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value);
 }
 
 pub fn luv(device: &mut device::Device, opcode: u32) {
@@ -706,17 +870,15 @@ pub fn luv(device: &mut device::Device, opcode: u32) {
 
     let index = ((address & 7) as u8).wrapping_sub(velement(opcode));
     address &= !7;
-    let mut offset: u8 = 0;
-    while offset < 8 {
-        modify_vpr_element(
-            &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            (device.rsp.mem[((address.wrapping_add(((index.wrapping_add(offset)) & 15) as u32))
-                & 0xFFF) as usize] as u16)
-                << 7,
-            offset,
-        );
-        offset += 1;
+    let mut value = 0;
+    for i in 0..8 {
+        value |= (((device.rsp.mem
+            [((address.wrapping_add(((index.wrapping_add(i)) & 15) as u32)) & 0xFFF) as usize]
+            as u16)
+            << 7) as u128)
+            << (16 * (7 - i));
     }
+    modify_vpr128(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value);
 }
 
 pub fn lhv(device: &mut device::Device, opcode: u32) {
@@ -725,17 +887,15 @@ pub fn lhv(device: &mut device::Device, opcode: u32) {
 
     let index = ((address & 7) as u8).wrapping_sub(velement(opcode));
     address &= !7;
-    let mut offset: u8 = 0;
-    while offset < 8 {
-        modify_vpr_element(
-            &mut device.rsp.cpu.vpr[rt(opcode) as usize],
-            (device.rsp.mem[((address.wrapping_add(((index.wrapping_add(offset * 2)) & 15) as u32))
-                & 0xFFF) as usize] as u16)
-                << 7,
-            offset,
-        );
-        offset += 1;
+    let mut value = 0;
+    for i in 0..8 {
+        value |= (((device.rsp.mem
+            [((address.wrapping_add(((index.wrapping_add(i * 2)) & 15) as u32)) & 0xFFF) as usize]
+            as u16)
+            << 7) as u128)
+            << (16 * (7 - i));
     }
+    modify_vpr128(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value);
 }
 
 pub fn lfv(device: &mut device::Device, opcode: u32) {
@@ -746,30 +906,30 @@ pub fn lfv(device: &mut device::Device, opcode: u32) {
     address &= !7;
     let start = velement(opcode);
     let end = std::cmp::min(start + 8, 16);
-    let mut tmp: u128 = 0;
+    let mut tmp: __m128i = unsafe { _mm_setzero_si128() };
     let mut offset: u8 = 0;
     while offset < 4 {
-        modify_vpr_element(
+        modify_vpr16(
             &mut tmp,
+            offset,
             (device.rsp.mem[((address.wrapping_add(((index.wrapping_add(offset * 4)) & 15) as u32))
                 & 0xFFF) as usize] as u16)
                 << 7,
-            offset,
         );
-        modify_vpr_element(
+        modify_vpr16(
             &mut tmp,
+            offset + 4,
             (device.rsp.mem[((address
                 .wrapping_add(((index.wrapping_add(offset * 4).wrapping_add(8)) & 15) as u32))
                 & 0xFFF) as usize] as u16)
                 << 7,
-            offset + 4,
         );
         offset += 1;
     }
     offset = start;
     while offset < end {
-        let value = get_vpr_byte(tmp, offset);
-        modify_vpr_byte(&mut device.rsp.cpu.vpr[rt(opcode) as usize], value, offset);
+        let value = get_vpr8(tmp, offset);
+        modify_vpr8(&mut device.rsp.cpu.vpr[rt(opcode) as usize], offset, value);
         offset += 1;
     }
 }
@@ -784,28 +944,26 @@ pub fn ltv(device: &mut device::Device, opcode: u32) {
     address = begin + (((velement(opcode)) as u32 + (address & 8)) & 15);
     let vtbase = rt(opcode) & !7;
     let mut vtoff = (velement(opcode)) as u32 >> 1;
-    let mut i = 0;
-    while i < 8 {
-        modify_vpr_byte(
+    for i in 0..8 {
+        modify_vpr8(
             &mut device.rsp.cpu.vpr[(vtbase + vtoff) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
             i * 2,
+            device.rsp.mem[(address & 0xFFF) as usize],
         );
         address += 1;
         if address == begin + 16 {
             address = begin
         }
-        modify_vpr_byte(
+        modify_vpr8(
             &mut device.rsp.cpu.vpr[(vtbase + vtoff) as usize],
-            device.rsp.mem[(address & 0xFFF) as usize],
             i * 2 + 1,
+            device.rsp.mem[(address & 0xFFF) as usize],
         );
         address += 1;
         if address == begin + 16 {
             address = begin
         }
         vtoff = (vtoff + 1) & 7;
-        i += 1;
     }
 }
 
@@ -814,7 +972,7 @@ pub fn sbv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 0));
 
     device.rsp.mem[(address & 0xFFF) as usize] =
-        get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], velement(opcode))
+        get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], velement(opcode))
 }
 
 pub fn ssv(device: &mut device::Device, opcode: u32) {
@@ -822,12 +980,20 @@ pub fn ssv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 1));
 
     let mut element = velement(opcode);
-    let end = element + 2;
-    while element < end {
-        device.rsp.mem[(address & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element);
-        address += 1;
-        element += 1;
+
+    if element % 2 == 0 {
+        let start = (address & 0xFFF) as usize;
+        device.rsp.mem[start..start + 2].copy_from_slice(
+            &get_vpr16(device.rsp.cpu.vpr[rt(opcode) as usize], element / 2).to_be_bytes(),
+        );
+    } else {
+        let end = element + 2;
+        while element < end {
+            device.rsp.mem[(address & 0xFFF) as usize] =
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element);
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -836,12 +1002,20 @@ pub fn slv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 2));
 
     let mut element = velement(opcode);
-    let end = element + 4;
-    while element < end {
-        device.rsp.mem[(address & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element);
-        address += 1;
-        element += 1;
+
+    if element % 4 == 0 {
+        let start = (address & 0xFFF) as usize;
+        device.rsp.mem[start..start + 4].copy_from_slice(
+            &get_vpr32(device.rsp.cpu.vpr[rt(opcode) as usize], element / 4).to_be_bytes(),
+        );
+    } else {
+        let end = element + 4;
+        while element < end {
+            device.rsp.mem[(address & 0xFFF) as usize] =
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element);
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -850,12 +1024,20 @@ pub fn sdv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 3));
 
     let mut element = velement(opcode);
-    let end = element + 8;
-    while element < end {
-        device.rsp.mem[(address & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element);
-        address += 1;
-        element += 1;
+
+    if element % 8 == 0 {
+        let start = (address & 0xFFF) as usize;
+        device.rsp.mem[start..start + 8].copy_from_slice(
+            &get_vpr64(device.rsp.cpu.vpr[rt(opcode) as usize], element / 8).to_be_bytes(),
+        );
+    } else {
+        let end = element + 8;
+        while element < end {
+            device.rsp.mem[(address & 0xFFF) as usize] =
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element);
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -864,12 +1046,19 @@ pub fn sqv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 4));
 
     let mut element = velement(opcode);
-    let end = element + (16 - (address & 15)) as u8;
-    while element < end {
-        device.rsp.mem[(address & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element);
-        address += 1;
-        element += 1;
+
+    if element == 0 && address % 16 == 0 {
+        let start = (address & 0xFFF) as usize;
+        device.rsp.mem[start..start + 16]
+            .copy_from_slice(&get_vpr128(device.rsp.cpu.vpr[rt(opcode) as usize]).to_be_bytes());
+    } else {
+        let end = element + (16 - (address & 15)) as u8;
+        while element < end {
+            device.rsp.mem[(address & 0xFFF) as usize] =
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element);
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -881,11 +1070,18 @@ pub fn srv(device: &mut device::Device, opcode: u32) {
     let end = element + (address & 15) as u8;
     let base = (16 - (address & 15)) as u8;
     address &= !15;
-    while element < end {
-        device.rsp.mem[(address & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element + base);
-        address += 1;
-        element += 1;
+
+    if element == 0 && base == 0 {
+        let start = (address & 0xFFF) as usize;
+        device.rsp.mem[start..start + 16]
+            .copy_from_slice(&get_vpr128(device.rsp.cpu.vpr[rt(opcode) as usize]).to_be_bytes());
+    } else {
+        while element < end {
+            device.rsp.mem[(address & 0xFFF) as usize] =
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element + base);
+            address += 1;
+            element += 1;
+        }
     }
 }
 
@@ -898,10 +1094,10 @@ pub fn spv(device: &mut device::Device, opcode: u32) {
     while element < end {
         if (element & 15) < 8 {
             device.rsp.mem[(address & 0xFFF) as usize] =
-                get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], (element & 7) << 1);
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], (element & 7) << 1);
         } else {
             device.rsp.mem[(address & 0xFFF) as usize] =
-                (get_vpr_element(device.rsp.cpu.vpr[rt(opcode) as usize], element) >> 7) as u8;
+                (get_vpr16(device.rsp.cpu.vpr[rt(opcode) as usize], element) >> 7) as u8;
         }
         address += 1;
         element += 1;
@@ -917,10 +1113,10 @@ pub fn suv(device: &mut device::Device, opcode: u32) {
     while element < end {
         if (element & 15) < 8 {
             device.rsp.mem[(address & 0xFFF) as usize] =
-                (get_vpr_element(device.rsp.cpu.vpr[rt(opcode) as usize], element) >> 7) as u8;
+                (get_vpr16(device.rsp.cpu.vpr[rt(opcode) as usize], element) >> 7) as u8;
         } else {
             device.rsp.mem[(address & 0xFFF) as usize] =
-                get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], (element & 7) << 1);
+                get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], (element & 7) << 1);
         }
         address += 1;
         element += 1;
@@ -934,13 +1130,11 @@ pub fn shv(device: &mut device::Device, opcode: u32) {
     let element = velement(opcode);
     let index = (address & 7) as u8;
     address &= !7;
-    let mut offset = 0;
-    while offset < 8 {
+    for offset in 0..8 {
         let byte_val = element + offset * 2;
-        let value = (get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], byte_val) << 1)
-            | (get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], byte_val + 1) >> 7);
+        let value = (get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], byte_val) << 1)
+            | (get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], byte_val + 1) >> 7);
         device.rsp.mem[((address + ((index + offset * 2) & 15) as u32) & 0xFFF) as usize] = value;
-        offset += 1;
     }
 }
 
@@ -949,8 +1143,7 @@ pub fn sfv(device: &mut device::Device, opcode: u32) {
         .wrapping_add(sign_extend_7bit_offset(voffset(opcode), 4));
     let base = address & 7;
     address &= !7;
-    let element = velement(opcode);
-    let elements = match element {
+    let elements = match velement(opcode) {
         0 | 15 => [0, 1, 2, 3],
         1 => [6, 7, 4, 5],
         4 => [1, 2, 3, 0],
@@ -967,12 +1160,10 @@ pub fn sfv(device: &mut device::Device, opcode: u32) {
         }
     };
     let mut offset = 0;
-    let mut i = 0;
-    while i < 4 {
+    for element in elements {
         device.rsp.mem[((address + ((base + offset) & 15)) & 0xFFF) as usize] =
-            (get_vpr_element(device.rsp.cpu.vpr[rt(opcode) as usize], elements[i]) >> 7) as u8;
+            (get_vpr16(device.rsp.cpu.vpr[rt(opcode) as usize], element) >> 7) as u8;
         offset += 4;
-        i += 1;
     }
 }
 
@@ -986,7 +1177,7 @@ pub fn swv(device: &mut device::Device, opcode: u32) {
     address &= !7;
     while element < end {
         device.rsp.mem[((address + (base & 15)) & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[rt(opcode) as usize], element);
+            get_vpr8(device.rsp.cpu.vpr[rt(opcode) as usize], element);
         base += 1;
         element += 1;
     }
@@ -1003,17 +1194,20 @@ pub fn stv(device: &mut device::Device, opcode: u32) {
     let mut offset = start;
     while offset < end {
         device.rsp.mem[((address + (base & 15)) & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[offset as usize], element);
+            get_vpr8(device.rsp.cpu.vpr[offset as usize], element);
         base = base.wrapping_add(1);
         element += 1;
         device.rsp.mem[((address + (base & 15)) & 0xFFF) as usize] =
-            get_vpr_byte(device.rsp.cpu.vpr[offset as usize], element);
+            get_vpr8(device.rsp.cpu.vpr[offset as usize], element);
         base = base.wrapping_add(1);
         element += 1;
         offset += 1;
     }
 }
 
-pub fn reserved(_device: &mut device::Device, _opcode: u32) {
-    panic!("rsp su reserved")
+pub fn special_reserved(device: &mut device::Device, opcode: u32) {
+    device.rsp.cpu.gpr[rd(opcode) as usize] =
+        device.rsp.cpu.gpr[rs(opcode) as usize] >> (device.rsp.cpu.gpr[rs(opcode) as usize] & 31)
 }
+
+pub fn reserved(_device: &mut device::Device, _opcode: u32) {}

src/device/si.rs

@@ -1,26 +1,27 @@
 use crate::device;
 
-pub const SI_DRAM_ADDR_REG: u32 = 0;
-pub const SI_PIF_ADDR_RD64B_REG: u32 = 1;
-//pub const SI_R2_REG: u32 = 2;
-//pub const SI_R3_REG: u32 = 3;
-pub const SI_PIF_ADDR_WR64B_REG: u32 = 4;
-//pub const SI_R5_REG: u32 = 5;
+const SI_DRAM_ADDR_REG: u32 = 0;
+const SI_PIF_ADDR_RD64B_REG: u32 = 1;
+//const SI_R2_REG: u32 = 2;
+//const SI_R3_REG: u32 = 3;
+const SI_PIF_ADDR_WR64B_REG: u32 = 4;
+//const SI_R5_REG: u32 = 5;
 pub const SI_STATUS_REG: u32 = 6;
 pub const SI_REGS_COUNT: u32 = 7;
 
 pub const SI_STATUS_DMA_BUSY: u32 = 1 << 0;
 pub const SI_STATUS_IO_BUSY: u32 = 1 << 1;
-//pub const SI_STATUS_DMA_ERROR: u32 = 1 << 3;
-pub const SI_STATUS_INTERRUPT: u32 = 1 << 12;
+//const SI_STATUS_DMA_ERROR: u32 = 1 << 3;
+const SI_STATUS_INTERRUPT: u32 = 1 << 12;
 
-#[derive(PartialEq)]
+#[derive(PartialEq, serde::Serialize, serde::Deserialize)]
 pub enum DmaDir {
     None,
     Write,
     Read,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Si {
     pub regs: [u32; SI_REGS_COUNT as usize],
     pub dma_dir: DmaDir,
@@ -31,10 +32,11 @@ pub fn read_regs(
     address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
+    device::cop0::add_cycles(device, 20);
     device.si.regs[((address & 0xFFFF) >> 2) as usize]
 }
 
-pub fn dma_read(device: &mut device::Device) {
+fn dma_read(device: &mut device::Device) {
     device.si.dma_dir = DmaDir::Read;
 
     let duration = device::pif::update_pif_ram(device);
@@ -43,13 +45,12 @@ pub fn dma_read(device: &mut device::Device) {
 
     device::events::create_event(
         device,
-        device::events::EventType::SI,
+        device::events::EVENT_TYPE_SI,
         device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + duration,
-        dma_event,
     )
 }
 
-pub fn dma_write(device: &mut device::Device) {
+fn dma_write(device: &mut device::Device) {
     device.si.dma_dir = DmaDir::Write;
 
     copy_pif_rdram(device);
@@ -58,9 +59,8 @@ pub fn dma_write(device: &mut device::Device) {
 
     device::events::create_event(
         device,
-        device::events::EventType::SI,
-        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + 5200, //based on https://github.com/rasky/n64-systembench
-        dma_event,
+        device::events::EVENT_TYPE_SI,
+        device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + 6000, //based on https://github.com/rasky/n64-systembench
     )
 }
 
@@ -78,7 +78,7 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
 }
 
 //rdram is in native endian format, and pif memory is in big endian format
-pub fn copy_pif_rdram(device: &mut device::Device) {
+fn copy_pif_rdram(device: &mut device::Device) {
     let dram_addr = device.si.regs[SI_DRAM_ADDR_REG as usize] as usize & device::rdram::RDRAM_MASK;
     if device.si.dma_dir == DmaDir::Write {
         let mut i = 0;

src/device/tlb.rs

@@ -1,12 +1,12 @@
 use crate::device;
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct TlbLut {
     pub address: u64,
     pub cached: bool,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
 pub struct TlbEntry {
     pub mask: u64,
     pub vpn2: u64,
@@ -145,7 +145,7 @@ pub fn probe(device: &mut device::Device) {
     }
 }
 
-pub fn tlb_unmap(device: &mut device::Device, index: u64) {
+fn tlb_unmap(device: &mut device::Device, index: u64) {
     let e = &mut device.cpu.cop0.tlb_entries[index as usize];
 
     if e.v_even != 0 {
@@ -183,7 +183,7 @@ pub fn tlb_unmap(device: &mut device::Device, index: u64) {
     }
 }
 
-pub fn tlb_map(device: &mut device::Device, index: u64) {
+fn tlb_map(device: &mut device::Device, index: u64) {
     let e = &mut device.cpu.cop0.tlb_entries[index as usize];
 
     if e.v_even != 0

src/device/vi.rs

@@ -1,67 +1,81 @@
-use crate::device;
-use crate::ui;
+use crate::{device, netplay, ui};
 use governor::clock::Clock;
 
-pub const VI_STATUS_REG: u32 = 0;
-//pub const VI_ORIGIN_REG: u32 = 1;
-pub const VI_WIDTH_REG: u32 = 2;
-//pub const VI_V_INTR_REG: u32 = 3;
-pub const VI_CURRENT_REG: u32 = 4;
-//pub const VI_BURST_REG: u32 = 5;
-pub const VI_V_SYNC_REG: u32 = 6;
-pub const VI_H_SYNC_REG: u32 = 7;
-//pub const VI_LEAP_REG: u32 = 8;
-pub const VI_H_START_REG: u32 = 9;
-pub const VI_V_START_REG: u32 = 10;
-//pub const VI_V_BURST_REG: u32 = 11;
-pub const VI_X_SCALE_REG: u32 = 12;
-pub const VI_Y_SCALE_REG: u32 = 13;
+const VI_STATUS_REG: u32 = 0;
+const VI_ORIGIN_REG: u32 = 1;
+//const VI_WIDTH_REG: u32 = 2;
+//const VI_V_INTR_REG: u32 = 3;
+const VI_CURRENT_REG: u32 = 4;
+//const VI_BURST_REG: u32 = 5;
+const VI_V_SYNC_REG: u32 = 6;
+const VI_H_SYNC_REG: u32 = 7;
+//const VI_LEAP_REG: u32 = 8;
+//const VI_H_START_REG: u32 = 9;
+//const VI_V_START_REG: u32 = 10;
+//const VI_V_BURST_REG: u32 = 11;
+//const VI_X_SCALE_REG: u32 = 12;
+//const VI_Y_SCALE_REG: u32 = 13;
 pub const VI_REGS_COUNT: u32 = 14;
 
+#[derive(serde::Serialize, serde::Deserialize)]
 pub struct Vi {
     pub regs: [u32; VI_REGS_COUNT as usize],
     pub clock: u64,
     pub delay: u64,
     pub field: u32,
+    #[serde(skip)]
     pub limiter: Option<governor::DefaultDirectRateLimiter>,
     pub count_per_scanline: u64,
+    pub enable_speed_limiter: bool,
     pub vi_counter: u64,
+    pub last_origin: u32,
+    pub internal_frame_counter: u64,
+    pub min_wait_time: std::time::Duration,
+    pub frame_time: f64,
+    pub limit_freq: u64,
+    #[serde(skip)]
+    #[serde(default = "std::time::Instant::now")]
+    pub limit_freq_check: std::time::Instant,
 }
 
-//static mut FRAME_COUNTER: u64 = 0;
-
-const LIMIT_BUFFER: u64 = 3;
+const MAX_LIMIT_FREQ: u64 = 3;
 
 pub fn set_expected_refresh_rate(device: &mut device::Device) {
     let expected_refresh_rate = device.vi.clock as f64
         / (device.vi.regs[VI_V_SYNC_REG as usize] + 1) as f64
         / ((device.vi.regs[VI_H_SYNC_REG as usize] & 0xFFF) + 1) as f64
         * 2.0;
+    device.vi.frame_time = 1.0 / expected_refresh_rate;
     device.vi.delay = (device.cpu.clock_rate as f64 / expected_refresh_rate) as u64;
     device.vi.count_per_scanline =
         device.vi.delay / (device.vi.regs[VI_V_SYNC_REG as usize] + 1) as u64;
 
-    let quota = governor::Quota::with_period(std::time::Duration::from_secs_f64(
-        (1.0 / expected_refresh_rate) * LIMIT_BUFFER as f64,
-    ))
-    .unwrap();
-    device.vi.limiter = Some(governor::RateLimiter::direct(quota))
+    create_limiter(device);
 }
 
-pub fn set_vertical_interrupt(device: &mut device::Device) {
-    if device::events::get_event(device, device::events::EventType::VI).is_none() {
+fn create_limiter(device: &mut device::Device) {
+    let quota = governor::Quota::with_period(std::time::Duration::from_secs_f64(
+        device.vi.frame_time * device.vi.limit_freq as f64,
+    ))
+    .unwrap();
+    device.vi.limiter = Some(governor::RateLimiter::direct(quota));
+    let _ = device.vi.limiter.as_ref().unwrap().check();
+    //println!("new limit freq: {}", device.vi.limit_freq);
+}
+
+fn set_vertical_interrupt(device: &mut device::Device) {
+    if device::events::get_event(device, device::events::EVENT_TYPE_VI).is_none() {
         device::events::create_event(
             device,
-            device::events::EventType::VI,
+            device::events::EVENT_TYPE_VI,
             device.cpu.cop0.regs[device::cop0::COP0_COUNT_REG as usize] + device.vi.delay,
-            vertical_interrupt_event,
         )
     }
 }
 
-pub fn set_current_line(device: &mut device::Device) {
+fn set_current_line(device: &mut device::Device) {
     let delay = device.vi.delay;
-    let next_vi = device::events::get_event(device, device::events::EventType::VI);
+    let next_vi = device::events::get_event(device, device::events::EVENT_TYPE_VI);
     if next_vi.is_some() {
         device.vi.regs[VI_CURRENT_REG as usize] = ((delay
             - (next_vi.unwrap().count
@@ -88,6 +102,7 @@ pub fn read_regs(
     if reg as u32 == VI_CURRENT_REG {
         set_current_line(device)
     }
+    device::cop0::add_cycles(device, 20);
     device.vi.regs[reg as usize]
 }
 
@@ -108,6 +123,13 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
                 set_expected_refresh_rate(device);
             }
         }
+        VI_ORIGIN_REG => {
+            device::memory::masked_write_32(&mut device.vi.regs[reg as usize], value, mask);
+            if device.vi.regs[reg as usize] != device.vi.last_origin {
+                device.vi.last_origin = device.vi.regs[reg as usize];
+                device.vi.internal_frame_counter += 1;
+            }
+        }
         _ => {
             device::memory::masked_write_32(&mut device.vi.regs[reg as usize], value, mask);
         }
@@ -116,18 +138,26 @@ pub fn write_regs(device: &mut device::Device, address: u64, value: u32, mask: u
 }
 
 pub fn vertical_interrupt_event(device: &mut device::Device) {
-    device.cpu.running = ui::video::update_screen();
+    ui::video::check_callback(device);
 
-    /*
-        unsafe {
-            FRAME_COUNTER += 1;
-        }
-    */
+    if device.netplay.is_some() {
+        netplay::send_sync_check(device);
+        device.vi.enable_speed_limiter = !device.netplay.as_ref().unwrap().fast_forward;
+    }
 
     device.vi.vi_counter += 1;
-    if device.vi.vi_counter % LIMIT_BUFFER == 0 {
+    if device.vi.vi_counter % device.vi.limit_freq == 0 && device.vi.enable_speed_limiter {
         speed_limiter(device);
     }
+    ui::video::update_screen();
+
+    /*
+    let vis = if device.cart.pal { 50 } else { 60 };
+    if device.vi.vi_counter % vis == 0 {
+        println!("FPS: {}", device.vi.internal_frame_counter);
+        device.vi.internal_frame_counter = 0;
+    }
+    */
 
     /* toggle vi field if in interlaced mode */
     device.vi.field ^= (device.vi.regs[VI_STATUS_REG as usize] >> 6) & 0x1;
@@ -136,9 +166,8 @@ pub fn vertical_interrupt_event(device: &mut device::Device) {
 
     device::events::create_event(
         device,
-        device::events::EventType::VI,
+        device::events::EVENT_TYPE_VI,
         device.cpu.next_event_count + device.vi.delay,
-        vertical_interrupt_event,
     )
 }
 
@@ -148,27 +177,40 @@ pub fn init(device: &mut device::Device) {
     } else {
         device.vi.clock = 48681812
     }
-    /*
-    std::thread::spawn(move || {
-        let mut last_count = 0;
-        loop {
-            unsafe {
-                println!("{:?}", FRAME_COUNTER - last_count);
-                last_count = FRAME_COUNTER;
-            }
-            std::thread::sleep(std::time::Duration::from_secs(1));
-        }
-    });
-    */
 }
 
-pub fn speed_limiter(device: &device::Device) {
+fn speed_limiter(device: &mut device::Device) {
     let result = device.vi.limiter.as_ref().unwrap().check();
     if result.is_err() {
         let outcome = result.unwrap_err();
         let dur = outcome.wait_time_from(governor::clock::DefaultClock::default().now());
         spin_sleep::sleep(dur);
+        if dur < device.vi.min_wait_time {
+            device.vi.min_wait_time = dur;
+        }
 
-        device.vi.limiter.as_ref().unwrap().check().unwrap();
+        let _ = device.vi.limiter.as_ref().unwrap().check();
+    } else {
+        device.vi.min_wait_time = std::time::Duration::from_secs(0);
+    }
+
+    if std::time::Instant::now()
+        .duration_since(device.vi.limit_freq_check)
+        .as_secs_f64()
+        > 1.0
+    {
+        if device.vi.min_wait_time.as_secs_f64() == 0.0 && device.vi.limit_freq < MAX_LIMIT_FREQ {
+            device.vi.limit_freq += 1;
+            create_limiter(device);
+        } else if device.vi.min_wait_time.as_secs_f64() > device.vi.frame_time
+            && device.vi.limit_freq > 1
+        {
+            device.vi.limit_freq -= 1;
+            create_limiter(device);
+        }
+
+        //println!("limit freq: {}", device.vi.limit_freq);
+        device.vi.min_wait_time = std::time::Duration::from_secs(1);
+        device.vi.limit_freq_check = std::time::Instant::now();
     }
 }

src/main.rs

@@ -1,8 +1,14 @@
+#![deny(warnings)]
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
 
 mod device;
+mod netplay;
+mod savestates;
 mod ui;
 use clap::Parser;
+use ui::gui;
 
 /// N64 emulator
 #[derive(Parser, Debug)]
@@ -18,6 +24,12 @@ struct Args {
         help = "Create a new input profile (keyboard/gamepad mappings)."
     )]
     configure_input_profile: Option<String>,
+    #[arg(
+        short,
+        long,
+        help = "Use DirectInput when configuring a new input profile."
+    )]
+    use_dinput: bool,
     #[arg(
         short,
         long,
@@ -37,7 +49,7 @@ struct Args {
         value_name = "CONTROLLER_NUMBER",
         help = "Must also specify --port. Used to assign a controller listed in --list-controllers to a port"
     )]
-    assign_controller: Option<u32>,
+    assign_controller: Option<i32>,
     #[arg(
         short,
         long,
@@ -53,22 +65,42 @@ struct Args {
     clear_input_bindings: bool,
 }
 
-fn main() {
-    let config_dir = dirs::config_dir().unwrap().join("gopher64");
-    let cache_dir = dirs::cache_dir().unwrap().join("gopher64");
+#[tokio::main]
+async fn main() {
+    let dirs = ui::get_dirs();
 
-    let _ = std::fs::create_dir_all(config_dir.clone());
-    let _ = std::fs::create_dir_all(cache_dir.clone());
-    let _ = std::fs::remove_file(cache_dir.clone().join("game_running"));
+    let mut result = std::fs::create_dir_all(dirs.config_dir);
+    if result.is_err() {
+        panic!("could not create config dir: {}", result.err().unwrap())
+    }
+    result = std::fs::create_dir_all(dirs.cache_dir.clone());
+    if result.is_err() {
+        panic!("could not create cache dir: {}", result.err().unwrap())
+    }
+    result = std::fs::create_dir_all(dirs.data_dir.join("saves"));
+    if result.is_err() {
+        panic!("could not create save dir: {}", result.err().unwrap())
+    }
+    result = std::fs::create_dir_all(dirs.data_dir.join("states"));
+    if result.is_err() {
+        panic!("could not create state dir: {}", result.err().unwrap())
+    }
+    let running_file = dirs.cache_dir.join("game_running");
+    if running_file.exists() {
+        result = std::fs::remove_file(running_file);
+        if result.is_err() {
+            panic!("could not remove running file: {}", result.err().unwrap())
+        }
+    }
 
     let args = Args::parse();
     let args_as_strings: Vec<String> = std::env::args().collect();
     let args_count = args_as_strings.len();
-    if args_count > 1 {
-        let mut device = device::Device::new();
+    if args_count > 1 && args.game.is_none() {
+        let mut ui = ui::Ui::new();
 
         if args.clear_input_bindings {
-            ui::input::clear_bindings(&mut device.ui);
+            ui::input::clear_bindings(&mut ui);
             return;
         }
         if args.port.is_some() {
@@ -79,7 +111,10 @@ fn main() {
             }
         }
         if args.list_controllers {
-            ui::input::list_controllers(&device.ui);
+            let controllers = gui::get_controller_names(&ui);
+            for (i, controller) in controllers.iter().enumerate() {
+                println!("Controller {}: {}", i, controller);
+            }
             return;
         }
         if args.assign_controller.is_some() {
@@ -88,7 +123,7 @@ fn main() {
                 return;
             }
             ui::input::assign_controller(
-                &mut device.ui,
+                &mut ui,
                 args.assign_controller.unwrap(),
                 args.port.unwrap(),
             );
@@ -100,7 +135,7 @@ fn main() {
                 return;
             }
             ui::input::bind_input_profile(
-                &mut device.ui,
+                &mut ui,
                 args.bind_input_profile.unwrap(),
                 args.port.unwrap(),
             );
@@ -108,25 +143,58 @@ fn main() {
         }
         if args.configure_input_profile.is_some() {
             ui::input::configure_input_profile(
-                &mut device.ui,
+                &mut ui,
                 args.configure_input_profile.unwrap(),
+                args.use_dinput,
             );
             return;
         }
-
-        if args.game.is_some() {
-            let file_path = std::path::Path::new(args.game.as_ref().unwrap());
-            device::run_game(file_path, &mut device, args.fullscreen);
+    } else if args.game.is_some() {
+        let file_path = std::path::Path::new(args.game.as_ref().unwrap());
+        let rom_contents = device::get_rom_contents(file_path);
+        if rom_contents.is_empty() {
+            println!("Could not read rom file");
+            return;
         }
+        let handle = std::thread::Builder::new()
+            .name("n64".to_string())
+            .stack_size(env!("N64_STACK_SIZE").parse().unwrap())
+            .spawn(move || {
+                let mut device = device::Device::new();
+                device.ui.fullscreen = args.fullscreen;
+                device::run_game(rom_contents, &mut device);
+            })
+            .unwrap();
+
+        handle.join().unwrap();
     } else {
         let options = eframe::NativeOptions {
-            viewport: eframe::egui::ViewportBuilder::default().with_inner_size([640.0, 480.0]),
+            viewport: eframe::egui::ViewportBuilder::default()
+                .with_inner_size([640.0, 480.0])
+                .with_icon(
+                    eframe::icon_data::from_png_bytes(include_bytes!("../data/gopher64.png"))
+                        .unwrap(),
+                ),
             ..Default::default()
         };
+
+        let controllers_paths;
+        let controller_names;
+        {
+            let game_ui = ui::Ui::new();
+            controllers_paths = gui::get_controller_paths(&game_ui);
+            controller_names = gui::get_controller_names(&game_ui);
+        }
         eframe::run_native(
             "gopher64",
             options,
-            Box::new(|_cc| Ok(Box::new(ui::gui::GopherEguiApp::new()))),
+            Box::new(|cc| {
+                Ok(Box::new(ui::gui::GopherEguiApp::new(
+                    cc,
+                    controllers_paths,
+                    controller_names,
+                )))
+            }),
         )
         .unwrap();
     }

src/netplay.rs

@@ -0,0 +1,321 @@
+use crate::{device, ui};
+use std::io::{Read, Write};
+//UDP packet formats
+const UDP_SEND_KEY_INFO: u8 = 0;
+const UDP_RECEIVE_KEY_INFO: u8 = 1;
+const UDP_REQUEST_KEY_INFO: u8 = 2;
+const UDP_RECEIVE_KEY_INFO_GRATUITOUS: u8 = 3;
+const UDP_SYNC_DATA: u8 = 4;
+
+//TCP packet formats
+const TCP_SEND_SAVE: u8 = 1;
+//const TCP_RECEIVE_SAVE: u8 = 2;
+//const TCP_SEND_SETTINGS: u8 = 3;
+//const TCP_RECEIVE_SETTINGS: u8 = 4;
+const TCP_REGISTER_PLAYER: u8 = 5;
+const TCP_GET_REGISTRATION: u8 = 6;
+const TCP_DISCONNECT_NOTICE: u8 = 7;
+const TCP_RECEIVE_SAVE_WITH_SIZE: u8 = 8;
+
+const CS4: u32 = 32;
+
+pub struct Netplay {
+    udp_socket: std::net::UdpSocket,
+    tcp_stream: std::net::TcpStream,
+    pub player_number: u8,
+    pub player_data: [PlayerData; 4],
+    vi_counter: u32,
+    status: u8,
+    buffer_target: u8,
+    pub fast_forward: bool,
+}
+
+pub struct PlayerData {
+    lag: u8,
+    count: u32,
+    pub reg_id: u32,
+    input_events: std::collections::HashMap<u32, InputEvent>,
+}
+
+struct InputEvent {
+    input: u32,
+    plugin: u8,
+}
+
+pub const NETPLAY_ERROR_DESYNC: u32 = 0;
+pub const NETPLAY_ERROR_LOST_CONNECTION: u32 = 1;
+pub const NETPLAY_ERROR_PLAYER_DISCONNECTED: u32 = 2;
+pub const NETPLAY_ERROR_PLAYER_1_DISCONNECTED: u32 = 3;
+pub const NETPLAY_ERROR_PLAYER_2_DISCONNECTED: u32 = 4;
+pub const NETPLAY_ERROR_PLAYER_3_DISCONNECTED: u32 = 5;
+pub const NETPLAY_ERROR_PLAYER_4_DISCONNECTED: u32 = 6;
+
+pub fn send_save(netplay: &mut Netplay, save_type: &str, save_data: &[u8], size: usize) {
+    let mut request: Vec<u8> = [TCP_SEND_SAVE].to_vec();
+    request.extend_from_slice(save_type.as_bytes());
+    request.push(0); // null terminate string
+    request.extend_from_slice(&(size as u32).to_be_bytes());
+
+    if size > 0 {
+        request.extend(save_data.to_owned());
+    }
+    netplay.tcp_stream.write_all(&request).unwrap();
+}
+
+pub fn receive_save(netplay: &mut Netplay, save_type: &str, save_data: &mut Vec<u8>) {
+    let mut request: Vec<u8> = [TCP_RECEIVE_SAVE_WITH_SIZE].to_vec();
+    request.extend_from_slice(save_type.as_bytes());
+    request.push(0); // null terminate string
+    netplay.tcp_stream.write_all(&request).unwrap();
+
+    let mut size: [u8; 4] = [0; 4];
+    netplay.tcp_stream.read_exact(&mut size).unwrap();
+    let mut response: Vec<u8> = vec![0; u32::from_be_bytes(size) as usize];
+    netplay.tcp_stream.read_exact(&mut response).unwrap();
+    *save_data = response;
+}
+
+pub fn send_sync_check(device: &mut device::Device) {
+    let netplay = device.netplay.as_mut().unwrap();
+    if netplay.vi_counter % 600 == 0 {
+        let mut request: Vec<u8> = [UDP_SYNC_DATA].to_vec();
+        request.extend_from_slice(&(netplay.vi_counter).to_be_bytes());
+
+        for i in 0..device::cop0::COP0_REGS_COUNT as usize {
+            request.extend_from_slice(&(device.cpu.cop0.regs[i] as u32).to_be_bytes());
+        }
+
+        netplay.udp_socket.send(&request).unwrap();
+    }
+    netplay.vi_counter = netplay.vi_counter.wrapping_add(1);
+}
+
+pub fn send_input(netplay: &Netplay, input: ui::input::InputData) {
+    let mut request: Vec<u8> = [UDP_SEND_KEY_INFO].to_vec();
+    request.push(netplay.player_number);
+    request.extend_from_slice(
+        &(netplay.player_data[netplay.player_number as usize].count).to_be_bytes(),
+    );
+    request.extend_from_slice(&(input.data).to_be_bytes());
+    request.push(input.pak_change_pressed as u8);
+    netplay.udp_socket.send(&request).unwrap();
+}
+
+pub fn get_input(device: &mut device::Device, channel: usize) -> ui::input::InputData {
+    let netplay = device.netplay.as_mut().unwrap();
+    let mut input = None;
+
+    let timeout = std::time::Instant::now() + std::time::Duration::from_secs(10);
+    let mut request_timer = std::time::Instant::now() - std::time::Duration::from_millis(5);
+    while input.is_none() {
+        process_incoming(netplay, &mut device.ui); // we execute process_incoming before request_input so that we send an accurate buffer count
+        if std::time::Instant::now() > request_timer {
+            // sends a request packet every 5ms
+            request_input(netplay, channel);
+            request_timer = std::time::Instant::now() + std::time::Duration::from_millis(5);
+        }
+        input = netplay.player_data[channel]
+            .input_events
+            .remove(&netplay.player_data[channel].count);
+
+        if std::time::Instant::now() > timeout {
+            ui::audio::play_netplay_audio(&mut device.ui, NETPLAY_ERROR_LOST_CONNECTION);
+            input = Some(InputEvent {
+                input: 0,
+                plugin: 0,
+            });
+            device.cpu.running = false;
+        }
+    }
+
+    netplay.fast_forward = netplay.player_data[channel].lag > 0
+        && netplay.player_data[channel].input_events.len() as u8 > netplay.buffer_target;
+
+    netplay.player_data[channel].count = netplay.player_data[channel].count.wrapping_add(1);
+    ui::input::InputData {
+        data: input.as_ref().unwrap().input,
+        pak_change_pressed: input.as_ref().unwrap().plugin != 0,
+    }
+}
+
+fn request_input(netplay: &Netplay, channel: usize) {
+    let mut request: Vec<u8> = [UDP_REQUEST_KEY_INFO].to_vec();
+    request.push(channel as u8); //The player we need input for
+    request.extend_from_slice(
+        &(netplay.player_data[netplay.player_number as usize].reg_id).to_be_bytes(),
+    );
+    request.extend_from_slice(&(netplay.player_data[channel].count).to_be_bytes());
+    request.push(0); //spectator mode
+    request.push(netplay.player_data[channel].input_events.len() as u8);
+    netplay.udp_socket.send(&request).unwrap();
+}
+
+fn process_incoming(netplay: &mut Netplay, ui: &mut ui::Ui) {
+    let mut buf: [u8; 1024] = [0; 1024];
+    while let Ok(_incoming) = netplay.udp_socket.recv(&mut buf) {
+        match buf[0] {
+            UDP_RECEIVE_KEY_INFO | UDP_RECEIVE_KEY_INFO_GRATUITOUS => {
+                let player = buf[1] as usize;
+                //current_status is a status update from the server
+                //it will let us know if another player has disconnected, or the games have desynced
+                let current_status = buf[2];
+                if buf[0] == UDP_RECEIVE_KEY_INFO {
+                    netplay.player_data[player].lag = buf[3];
+                }
+                if current_status != netplay.status {
+                    if ((current_status & 0x1) ^ (netplay.status & 0x1)) != 0 {
+                        ui::audio::play_netplay_audio(ui, NETPLAY_ERROR_DESYNC);
+                    }
+                    for dis in 1..5 {
+                        if ((current_status & (0x1 << dis)) ^ (netplay.status & (0x1 << dis))) != 0
+                        {
+                            ui::audio::play_netplay_audio(
+                                ui,
+                                NETPLAY_ERROR_PLAYER_DISCONNECTED + dis,
+                            );
+                        }
+                    }
+                    netplay.status = current_status;
+                }
+
+                let mut buffer_offset = 5;
+                for _i in 0..buf[4] {
+                    let count = u32::from_be_bytes(
+                        buf[buffer_offset..buffer_offset + 4].try_into().unwrap(),
+                    );
+                    buffer_offset += 4;
+
+                    if (count.wrapping_sub(netplay.player_data[player].count)) > (u32::MAX / 2) {
+                        //event doesn't need to be recorded
+                        buffer_offset += 5;
+                        continue;
+                    }
+
+                    let input = u32::from_be_bytes(
+                        buf[buffer_offset..buffer_offset + 4].try_into().unwrap(),
+                    );
+                    buffer_offset += 4;
+                    let plugin = buf[buffer_offset];
+                    buffer_offset += 1;
+                    let input_event = InputEvent { input, plugin };
+                    netplay.player_data[player]
+                        .input_events
+                        .insert(count, input_event);
+                }
+            }
+            _ => {
+                panic! {"unknown UDP packet"}
+            }
+        }
+    }
+}
+
+pub fn init(
+    mut peer_addr: std::net::SocketAddr,
+    session: ui::gui::gui_netplay::NetplayRoom,
+    player_number: u8,
+) -> Netplay {
+    peer_addr.set_port(session.port.unwrap() as u16);
+    let udp_socket;
+    if peer_addr.is_ipv4() {
+        udp_socket = std::net::UdpSocket::bind((std::net::Ipv4Addr::UNSPECIFIED, 0))
+            .expect("couldn't bind to address");
+        socket2::SockRef::from(&udp_socket)
+            .set_tos(CS4 << 2)
+            .unwrap();
+    } else {
+        udp_socket = std::net::UdpSocket::bind((std::net::Ipv6Addr::UNSPECIFIED, 0))
+            .expect("couldn't bind to address");
+        #[cfg(not(target_os = "windows"))]
+        socket2::SockRef::from(&udp_socket)
+            .set_tclass_v6(CS4 << 2)
+            .unwrap();
+    };
+
+    udp_socket.connect(peer_addr).unwrap();
+    udp_socket.set_nonblocking(true).unwrap();
+
+    let mut stream = std::net::TcpStream::connect(peer_addr).unwrap();
+
+    let regid = (player_number + 1) as u32;
+    let mut request: [u8; 8] = [
+        TCP_REGISTER_PLAYER,
+        player_number,
+        0, //plugin/pak
+        0, //rawdata
+        0, //regid (u32)
+        0, //regid (u32)
+        0, //regid (u32)
+        0, //regid (u32)
+    ];
+
+    request[4..8].copy_from_slice(&regid.to_be_bytes());
+    stream.write_all(&request).unwrap();
+
+    let mut response: [u8; 2] = [0, 0];
+    stream.read_exact(&mut response).unwrap();
+    if response[0] != 1 {
+        panic!("Failed to register player");
+    }
+    let buffer_target = response[1];
+
+    let request: [u8; 1] = [TCP_GET_REGISTRATION];
+    stream.write_all(&request).unwrap();
+    let mut response: [u8; 24] = [0; 24];
+    stream.read_exact(&mut response).unwrap();
+
+    let mut reg_id: [u32; 4] = [0; 4];
+    for i in 0..4 {
+        // reg_id of 0 means no player connected
+        reg_id[i] = u32::from_be_bytes(response[(i * 6)..(i * 6) + 4].try_into().unwrap());
+    }
+    Netplay {
+        udp_socket,
+        tcp_stream: stream,
+        player_number,
+        vi_counter: 0,
+        status: 0,
+        buffer_target,
+        fast_forward: false,
+        player_data: [
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[0],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[1],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[2],
+                input_events: std::collections::HashMap::new(),
+            },
+            PlayerData {
+                lag: 0,
+                count: 0,
+                reg_id: reg_id[3],
+                input_events: std::collections::HashMap::new(),
+            },
+        ],
+    }
+}
+
+pub fn close(device: &mut device::Device) {
+    let netplay = device.netplay.as_mut().unwrap();
+    let regid = (netplay.player_number + 1) as u32;
+    let mut request: [u8; 5] = [TCP_DISCONNECT_NOTICE, 0, 0, 0, 0];
+    request[1..5].copy_from_slice(&regid.to_be_bytes());
+
+    netplay.tcp_stream.write_all(&request).unwrap();
+    netplay.tcp_stream.flush().unwrap();
+    netplay
+        .tcp_stream
+        .shutdown(std::net::Shutdown::Both)
+        .unwrap();
+}

src/savestates.rs

@@ -0,0 +1,201 @@
+use crate::{device, ui};
+#[cfg(target_arch = "aarch64")]
+use device::__m128i;
+use serde::de::{Deserialize, Deserializer, SeqAccess, Visitor};
+use serde::ser::{Serialize, SerializeSeq, Serializer};
+#[cfg(target_arch = "x86_64")]
+use std::arch::x86_64::*;
+
+struct M128iArrayVisitor<const N: usize>;
+
+impl<'de, const N: usize> Visitor<'de> for M128iArrayVisitor<N> {
+    type Value = [__m128i; N];
+
+    fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
+        formatter.write_str(&format!("an array of {} 128-bit integers", N))
+    }
+
+    fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
+    where
+        A: SeqAccess<'de>,
+    {
+        let mut arr: [__m128i; N] = [device::zero_m128i(); N];
+        for (index, item) in arr.iter_mut().enumerate().take(N) {
+            match seq.next_element::<u128>()? {
+                Some(value) => *item = unsafe { std::mem::transmute::<u128, __m128i>(value) },
+                None => return Err(serde::de::Error::invalid_length(index, &self)),
+            }
+        }
+        Ok(arr)
+    }
+}
+
+pub fn deserialize_m128i_array<'de, D, const N: usize>(
+    deserializer: D,
+) -> Result<[__m128i; N], D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    deserializer.deserialize_seq(M128iArrayVisitor)
+}
+
+pub fn serialize_m128i<S>(data: &__m128i, serializer: S) -> Result<S::Ok, S::Error>
+where
+    S: Serializer,
+{
+    let bytes: u128 = unsafe { std::mem::transmute(*data) };
+    bytes.serialize(serializer)
+}
+
+pub fn deserialize_m128i<'de, D>(deserializer: D) -> Result<__m128i, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    let bytes = u128::deserialize(deserializer)?;
+    Ok(unsafe { std::mem::transmute::<u128, __m128i>(bytes) })
+}
+
+pub fn serialize_m128i_array<S>(value: &[__m128i], serializer: S) -> Result<S::Ok, S::Error>
+where
+    S: serde::Serializer,
+{
+    let mut seq = serializer.serialize_seq(Some(value.len()))?;
+
+    for item in value {
+        let bytes: u128 = unsafe { std::mem::transmute(*item) };
+        seq.serialize_element(&bytes)?;
+    }
+
+    seq.end()
+}
+
+pub fn create_savestate(device: &device::Device) {
+    ui::video::full_sync();
+
+    let data: &[(&[u8], &str)] = &[
+        (&postcard::to_stdvec(device).unwrap(), "device"),
+        (&postcard::to_stdvec(&device.ui.saves).unwrap(), "saves"),
+    ];
+    let compressed_file = ui::storage::compress_file(data);
+    std::fs::write(device.ui.paths.savestate_file_path.clone(), compressed_file).unwrap();
+}
+
+pub fn load_savestate(device: &mut device::Device) {
+    let savestate = std::fs::read(&mut device.ui.paths.savestate_file_path);
+    if savestate.is_ok() {
+        let device_bytes = ui::storage::decompress_file(savestate.as_ref().unwrap(), "device");
+        let save_bytes = ui::storage::decompress_file(savestate.as_ref().unwrap(), "saves");
+        let state: device::Device = postcard::from_bytes(&device_bytes).unwrap();
+
+        device.ui.saves = postcard::from_bytes(&save_bytes).unwrap();
+
+        device.cpu = state.cpu;
+        device.pif = state.pif;
+
+        let rom = device.cart.rom.clone();
+        device.cart = state.cart;
+        device.cart.rom = rom;
+
+        device.memory = state.memory;
+        device.rsp = state.rsp;
+        device.rdp = state.rdp;
+        device.rdram = state.rdram;
+        device.mi = state.mi;
+        device.pi = state.pi;
+        device.vi = state.vi;
+        device.ai = state.ai;
+        device.si = state.si;
+        device.ri = state.ri;
+        device.vru = state.vru;
+
+        device::memory::init(device);
+        device::vi::set_expected_refresh_rate(device);
+        device::cpu::map_instructions(device);
+        device::cop0::map_instructions(device);
+        device::cop1::map_instructions(device);
+        device::cop2::map_instructions(device);
+        device::rsp_cpu::map_instructions(device);
+
+        let mut mem_addr = 0x1000;
+        while mem_addr < 0x2000 {
+            let data =
+                u32::from_be_bytes(device.rsp.mem[mem_addr..mem_addr + 4].try_into().unwrap());
+            device.rsp.cpu.instructions[(mem_addr & 0xFFF) / 4].func =
+                device::rsp_cpu::decode_opcode(device, data);
+            device.rsp.cpu.instructions[(mem_addr & 0xFFF) / 4].opcode = data;
+            mem_addr += 4;
+        }
+
+        for line_index in 0..512 {
+            device.memory.icache[line_index].instruction[0] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[0]);
+            device.memory.icache[line_index].instruction[1] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[1]);
+            device.memory.icache[line_index].instruction[2] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[2]);
+            device.memory.icache[line_index].instruction[3] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[3]);
+            device.memory.icache[line_index].instruction[4] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[4]);
+            device.memory.icache[line_index].instruction[5] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[5]);
+            device.memory.icache[line_index].instruction[6] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[6]);
+            device.memory.icache[line_index].instruction[7] =
+                device::cpu::decode_opcode(device, device.memory.icache[line_index].words[7]);
+        }
+
+        device::pif::connect_pif_channels(device);
+        for i in 0..4 {
+            if device.pif.channels[i].pak_handler.is_some() {
+                if device.pif.channels[i].pak_handler.unwrap().pak_type
+                    == device::controller::PakType::RumblePak
+                {
+                    let rumblepak_handler = device::controller::PakHandler {
+                        read: device::controller::rumble::read,
+                        write: device::controller::rumble::write,
+                        pak_type: device::controller::PakType::RumblePak,
+                    };
+                    device.pif.channels[i].pak_handler = Some(rumblepak_handler);
+                } else if device.pif.channels[i].pak_handler.unwrap().pak_type
+                    == device::controller::PakType::MemPak
+                {
+                    let mempak_handler = device::controller::PakHandler {
+                        read: device::controller::mempak::read,
+                        write: device::controller::mempak::write,
+                        pak_type: device::controller::PakType::MemPak,
+                    };
+                    device.pif.channels[i].pak_handler = Some(mempak_handler);
+                }
+            }
+        }
+
+        ui::audio::close(&mut device.ui);
+        ui::audio::init(&mut device.ui, device.ai.freq);
+        ui::video::load_state(device);
+    }
+}
+
+pub fn default_pak_handler() -> fn(&mut device::Device, usize, u16, usize, usize) {
+    device::controller::mempak::read
+}
+
+pub fn default_instruction() -> fn(&mut device::Device, u32) {
+    device::cop0::reserved
+}
+
+pub fn default_instructions<const N: usize>() -> [fn(&mut device::Device, u32); N]
+where
+    [fn(&mut device::Device, u32); N]: Sized,
+{
+    [device::cop0::reserved; N]
+}
+
+pub fn default_memory_read()
+-> [fn(&mut device::Device, u64, device::memory::AccessSize) -> u32; 0x2000] {
+    [device::rdram::read_mem; 0x2000]
+}
+
+pub fn default_memory_write() -> [fn(&mut device::Device, u64, u32, u32); 0x2000] {
+    [device::rdram::write_mem; 0x2000]
+}

src/ui.rs

@@ -4,79 +4,111 @@ pub mod gui;
 pub mod input;
 pub mod storage;
 pub mod video;
+pub mod vru;
+
+pub struct Dirs {
+    pub config_dir: std::path::PathBuf,
+    pub cache_dir: std::path::PathBuf,
+    pub data_dir: std::path::PathBuf,
+}
 
 pub struct Ui {
+    pub dirs: Dirs,
+    pub keyboard_state: *const bool,
     pub controllers: [input::Controllers; 4],
-    pub config_file_path: std::path::PathBuf,
     pub config: config::Config,
     pub save_type: Vec<storage::SaveTypes>,
     pub game_id: String,
     pub game_hash: String,
     pub paths: storage::Paths,
     pub saves: storage::Saves,
-    pub sdl_context: Option<sdl2::Sdl>,
-    pub video_subsystem: Option<sdl2::VideoSubsystem>,
-    pub audio_subsystem: Option<sdl2::AudioSubsystem>,
-    pub joystick_subsystem: Option<sdl2::JoystickSubsystem>,
-    #[allow(dead_code)]
-    pub controller_subsystem: Option<sdl2::GameControllerSubsystem>,
-    pub window: Option<sdl2::video::Window>,
-    pub audio_device: Option<sdl2::audio::AudioQueue<i16>>,
+    pub event_audio: audio::EventAudio,
+    pub window: *mut sdl3_sys::video::SDL_Window,
+    pub audio_stream: *mut sdl3_sys::audio::SDL_AudioStream,
+    pub event_audio_stream: *mut sdl3_sys::audio::SDL_AudioStream,
+    pub audio_device: u32,
+    pub num_joysticks: i32,
+    pub fullscreen: bool,
+    pub joysticks: *mut sdl3_sys::joystick::SDL_JoystickID,
+    pub with_sdl: bool,
 }
 
 impl Drop for Ui {
     fn drop(&mut self) {
-        write_config(self);
+        if self.with_sdl {
+            unsafe {
+                sdl3_sys::stdinc::SDL_free(self.joysticks as *mut std::ffi::c_void);
+                sdl3_sys::init::SDL_Quit();
+            }
+        }
     }
 }
 
-fn write_config(ui: &Ui) {
-    let f = std::fs::File::create(ui.config_file_path.clone()).unwrap();
-    serde_json::to_writer_pretty(f, &ui.config).unwrap();
+pub fn sdl_init(flag: sdl3_sys::init::SDL_InitFlags) {
+    unsafe {
+        let init = sdl3_sys::init::SDL_WasInit(0);
+        if init & flag == 0 && !sdl3_sys::init::SDL_InitSubSystem(flag) {
+            let err = std::ffi::CStr::from_ptr(sdl3_sys::error::SDL_GetError())
+                .to_str()
+                .unwrap();
+            panic!("Could not initialize SDL subsystem: {}, {}", flag, err);
+        }
+    }
+}
+
+pub fn get_dirs() -> Dirs {
+    let exe_path = std::env::current_exe().unwrap();
+    let portable_dir = exe_path.parent();
+    let portable = portable_dir.unwrap().join("portable.txt").exists();
+    let config_dir;
+    let cache_dir;
+    let data_dir;
+    if portable {
+        config_dir = portable_dir.unwrap().join("portable_data").join("config");
+        cache_dir = portable_dir.unwrap().join("portable_data").join("cache");
+        data_dir = portable_dir.unwrap().join("portable_data").join("data");
+    } else {
+        config_dir = dirs::config_dir().unwrap().join("gopher64");
+        cache_dir = dirs::cache_dir().unwrap().join("gopher64");
+        data_dir = dirs::data_dir().unwrap().join("gopher64");
+    };
+
+    Dirs {
+        config_dir,
+        cache_dir,
+        data_dir,
+    }
 }
 
 impl Ui {
-    pub fn new() -> Ui {
-        let sdl_context = sdl2::init().unwrap();
-        let video_subsystem = sdl_context.video().unwrap();
-        let audio_subsystem = sdl_context.audio().unwrap();
-        let joystick_subsystem = sdl_context.joystick().unwrap();
-        let controller_subsystem = sdl_context.game_controller().unwrap();
-
-        let config_file_path = dirs::config_dir()
-            .unwrap()
-            .join("gopher64")
-            .join("config.json");
-        let config_file = std::fs::read(config_file_path.clone());
-        let mut config_map = config::Config::new();
-        if config_file.is_ok() {
-            let result = serde_json::from_slice(config_file.unwrap().as_ref());
-            if result.is_ok() {
-                config_map = result.unwrap();
-            }
-        }
+    fn construct_ui(num_joysticks: i32, joysticks: *mut u32, with_sdl: bool) -> Ui {
+        let dirs = get_dirs();
 
         Ui {
             controllers: [
                 input::Controllers {
-                    game_controller: None,
-                    joystick: None,
+                    game_controller: std::ptr::null_mut(),
+                    joystick: std::ptr::null_mut(),
+                    rumble: false,
                 },
                 input::Controllers {
-                    game_controller: None,
-                    joystick: None,
+                    game_controller: std::ptr::null_mut(),
+                    joystick: std::ptr::null_mut(),
+                    rumble: false,
                 },
                 input::Controllers {
-                    game_controller: None,
-                    joystick: None,
+                    game_controller: std::ptr::null_mut(),
+                    joystick: std::ptr::null_mut(),
+                    rumble: false,
                 },
                 input::Controllers {
-                    game_controller: None,
-                    joystick: None,
+                    game_controller: std::ptr::null_mut(),
+                    joystick: std::ptr::null_mut(),
+                    rumble: false,
                 },
             ],
-            config_file_path,
-            config: config_map,
+            keyboard_state: std::ptr::null_mut(),
+            config: config::Config::new(),
             save_type: vec![],
             game_id: String::new(),
             game_hash: String::new(),
@@ -85,22 +117,73 @@ impl Ui {
                 fla_file_path: std::path::PathBuf::new(),
                 sra_file_path: std::path::PathBuf::new(),
                 pak_file_path: std::path::PathBuf::new(),
+                sdcard_file_path: std::path::PathBuf::new(),
                 romsave_file_path: std::path::PathBuf::new(),
+                savestate_file_path: std::path::PathBuf::new(),
             },
             saves: storage::Saves {
-                eeprom: (Vec::new(), false),
-                sram: (Vec::new(), false),
-                flash: (Vec::new(), false),
-                mempak: (Vec::new(), false),
-                romsave: (serde_json::Map::new(), false),
+                eeprom: storage::Save {
+                    data: Vec::new(),
+                    written: false,
+                },
+                sram: storage::Save {
+                    data: Vec::new(),
+                    written: false,
+                },
+                flash: storage::Save {
+                    data: Vec::new(),
+                    written: false,
+                },
+                mempak: storage::Save {
+                    data: Vec::new(),
+                    written: false,
+                },
+                sdcard: storage::Save {
+                    data: Vec::new(),
+                    written: false,
+                },
+                romsave: storage::RomSave {
+                    data: std::collections::HashMap::new(),
+                    written: false,
+                },
             },
-            sdl_context: Some(sdl_context),
-            video_subsystem: Some(video_subsystem),
-            audio_subsystem: Some(audio_subsystem),
-            joystick_subsystem: Some(joystick_subsystem),
-            controller_subsystem: Some(controller_subsystem),
-            window: None,
-            audio_device: None,
+            event_audio: audio::EventAudio {
+                mempak: include_bytes!("../data/mempak.wav").to_vec(),
+                rumblepak: include_bytes!("../data/rumblepak.wav").to_vec(),
+                transferpak: include_bytes!("../data/transferpak.wav").to_vec(),
+                netplay_desync: include_bytes!("../data/netplay_desync.wav").to_vec(),
+                netplay_lost_connection: include_bytes!("../data/netplay_lost_connection.wav")
+                    .to_vec(),
+                netplay_disconnected: [
+                    include_bytes!("../data/netplay_p1_disconnected.wav").to_vec(),
+                    include_bytes!("../data/netplay_p2_disconnected.wav").to_vec(),
+                    include_bytes!("../data/netplay_p3_disconnected.wav").to_vec(),
+                    include_bytes!("../data/netplay_p4_disconnected.wav").to_vec(),
+                ],
+            },
+            window: std::ptr::null_mut(),
+            audio_stream: std::ptr::null_mut(),
+            event_audio_stream: std::ptr::null_mut(),
+            audio_device: 0,
+            fullscreen: false,
+            num_joysticks,
+            joysticks,
+            dirs,
+            with_sdl,
         }
     }
+
+    pub fn default() -> Ui {
+        Self::construct_ui(0, std::ptr::null_mut(), false)
+    }
+
+    pub fn new() -> Ui {
+        sdl_init(sdl3_sys::init::SDL_INIT_GAMEPAD);
+        let mut num_joysticks = 0;
+        let joysticks = unsafe { sdl3_sys::joystick::SDL_GetJoysticks(&mut num_joysticks) };
+        if joysticks.is_null() {
+            panic!("Could not get joystick list");
+        }
+        Self::construct_ui(num_joysticks, joysticks, true)
+    }
 }

src/ui/audio.rs

@@ -1,24 +1,128 @@
 use crate::device;
+use crate::netplay;
 use crate::ui;
 
+pub struct EventAudio {
+    pub mempak: Vec<u8>,
+    pub rumblepak: Vec<u8>,
+    pub transferpak: Vec<u8>,
+    pub netplay_desync: Vec<u8>,
+    pub netplay_lost_connection: Vec<u8>,
+    pub netplay_disconnected: [Vec<u8>; 4],
+}
+
 pub fn init(ui: &mut ui::Ui, frequency: u64) {
-    let desired_spec = sdl2::audio::AudioSpecDesired {
-        freq: Some(frequency as i32),
-        channels: Some(2),
-        samples: None,
+    ui::sdl_init(sdl3_sys::init::SDL_INIT_AUDIO);
+
+    let audio_spec = sdl3_sys::audio::SDL_AudioSpec {
+        format: sdl3_sys::audio::SDL_AUDIO_S16LE,
+        freq: frequency as i32,
+        channels: 2,
     };
-    ui.audio_device = Some(
-        ui.audio_subsystem
-            .as_mut()
-            .unwrap()
-            .open_queue::<i16, _>(None, &desired_spec)
-            .unwrap(),
-    );
-    ui.audio_device.as_mut().unwrap().resume();
+    ui.audio_device = unsafe {
+        sdl3_sys::audio::SDL_OpenAudioDevice(
+            sdl3_sys::audio::SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK,
+            &audio_spec,
+        )
+    };
+    if ui.audio_device == 0 {
+        panic!("Could not open audio device");
+    }
+
+    let mut dst = Default::default();
+    if !unsafe {
+        sdl3_sys::audio::SDL_GetAudioDeviceFormat(ui.audio_device, &mut dst, std::ptr::null_mut())
+    } {
+        panic!("Could not get audio device format");
+    }
+
+    ui.audio_stream = unsafe { sdl3_sys::audio::SDL_CreateAudioStream(&audio_spec, &dst) };
+    if ui.audio_stream.is_null() {
+        return;
+    }
+    if !unsafe { sdl3_sys::audio::SDL_BindAudioStream(ui.audio_device, ui.audio_stream) } {
+        panic!("Could not bind audio stream");
+    }
+
+    let wav_audio_spec = sdl3_sys::audio::SDL_AudioSpec {
+        format: sdl3_sys::audio::SDL_AUDIO_S16LE,
+        freq: 24000,
+        channels: 1,
+    };
+
+    ui.event_audio_stream =
+        unsafe { sdl3_sys::audio::SDL_CreateAudioStream(&wav_audio_spec, &dst) };
+    if !unsafe { sdl3_sys::audio::SDL_BindAudioStream(ui.audio_device, ui.event_audio_stream) } {
+        panic!("Could not bind audio stream");
+    }
+}
+
+pub fn close(ui: &mut ui::Ui) {
+    unsafe {
+        if !ui.audio_stream.is_null() {
+            sdl3_sys::audio::SDL_DestroyAudioStream(ui.audio_stream);
+            ui.audio_stream = std::ptr::null_mut();
+        }
+        if !ui.event_audio_stream.is_null() {
+            sdl3_sys::audio::SDL_DestroyAudioStream(ui.event_audio_stream);
+            ui.event_audio_stream = std::ptr::null_mut();
+        }
+        sdl3_sys::audio::SDL_CloseAudioDevice(ui.audio_device);
+        ui.audio_device = 0;
+    }
+}
+
+pub fn play_netplay_audio(ui: &mut ui::Ui, error: u32) {
+    if ui.event_audio_stream.is_null() {
+        return;
+    }
+    let sound = match error {
+        netplay::NETPLAY_ERROR_DESYNC => &ui.event_audio.netplay_desync,
+        netplay::NETPLAY_ERROR_LOST_CONNECTION => &ui.event_audio.netplay_lost_connection,
+        netplay::NETPLAY_ERROR_PLAYER_1_DISCONNECTED => &ui.event_audio.netplay_disconnected[0],
+        netplay::NETPLAY_ERROR_PLAYER_2_DISCONNECTED => &ui.event_audio.netplay_disconnected[1],
+        netplay::NETPLAY_ERROR_PLAYER_3_DISCONNECTED => &ui.event_audio.netplay_disconnected[2],
+        netplay::NETPLAY_ERROR_PLAYER_4_DISCONNECTED => &ui.event_audio.netplay_disconnected[3],
+        _ => panic!("Invalid netplay error"),
+    };
+    if !unsafe {
+        sdl3_sys::audio::SDL_PutAudioStreamData(
+            ui.event_audio_stream,
+            sound.as_ptr() as *const std::ffi::c_void,
+            sound.len() as i32,
+        )
+    } {
+        panic!("Could not play audio");
+    }
+}
+
+pub fn play_pak_switch(ui: &mut ui::Ui, pak: device::controller::PakType) {
+    if ui.event_audio_stream.is_null() {
+        return;
+    }
+
+    let sound = match pak {
+        device::controller::PakType::RumblePak => &ui.event_audio.rumblepak,
+        device::controller::PakType::MemPak => &ui.event_audio.mempak,
+        device::controller::PakType::TransferPak => &ui.event_audio.transferpak,
+        _ => panic!("Invalid pak type"),
+    };
+    if !unsafe {
+        sdl3_sys::audio::SDL_PutAudioStreamData(
+            ui.event_audio_stream,
+            sound.as_ptr() as *const std::ffi::c_void,
+            sound.len() as i32,
+        )
+    } {
+        panic!("Could not play audio");
+    }
 }
 
 pub fn play_audio(device: &mut device::Device, dram_addr: usize, length: u64) {
-    let audio_device = device.ui.audio_device.as_mut().unwrap();
+    if device.ui.audio_stream.is_null() {
+        return;
+    }
+
     let mut primary_buffer: Vec<i16> = vec![0; length as usize / 2];
     let mut i = 0;
     while i < length as usize / 2 {
@@ -32,16 +136,33 @@ pub fn play_audio(device: &mut device::Device, dram_addr: usize, length: u64) {
         i += 2;
     }
 
-    let audio_queued = audio_device.size() as f64;
-    let acceptable_latency = (audio_device.spec().freq as f64 * 0.2) * 4.0;
-    let min_latency = (audio_device.spec().freq as f64 * 0.02) * 4.0;
+    let audio_queued =
+        unsafe { sdl3_sys::audio::SDL_GetAudioStreamQueued(device.ui.audio_stream) } as f64;
+    let acceptable_latency = (device.ai.freq as f64 * 0.2) * 4.0;
+    let min_latency = (device.ai.freq as f64 * 0.02) * 4.0;
 
     if audio_queued < min_latency {
-        let silence_buffer: Vec<i16> = vec![0; ((min_latency - audio_queued) * 2.0) as usize & !1];
-        audio_device.queue_audio(&silence_buffer).unwrap();
+        let silence_buffer: Vec<u8> = vec![0; min_latency as usize & !3];
+        if !unsafe {
+            sdl3_sys::audio::SDL_PutAudioStreamData(
+                device.ui.audio_stream,
+                silence_buffer.as_ptr() as *const std::ffi::c_void,
+                silence_buffer.len() as i32,
+            )
+        } {
+            panic!("Could not play audio");
+        }
     }
 
-    if audio_queued < acceptable_latency {
-        audio_device.queue_audio(&primary_buffer).unwrap();
+    if audio_queued < acceptable_latency
+        && !unsafe {
+            sdl3_sys::audio::SDL_PutAudioStreamData(
+                device.ui.audio_stream,
+                primary_buffer.as_ptr() as *const std::ffi::c_void,
+                primary_buffer.len() as i32 * 2,
+            )
+        }
+    {
+        panic!("Could not play audio");
     }
 }

src/ui/config.rs

@@ -1,13 +1,34 @@
 use crate::ui;
 
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
+pub struct InputKeyButton {
+    pub enabled: bool,
+    pub id: i32,
+}
+
+#[derive(PartialEq, Copy, Clone, serde::Serialize, serde::Deserialize)]
+pub struct InputControllerAxis {
+    pub enabled: bool,
+    pub id: i32,
+    pub axis: i16,
+}
+
+#[derive(Copy, Clone, serde::Serialize, serde::Deserialize)]
+pub struct InputJoystickHat {
+    pub enabled: bool,
+    pub id: i32,
+    pub direction: u8,
+}
+
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct InputProfile {
-    pub keys: [(bool, i32); 18],
-    pub controller_buttons: [(bool, i32); 14],
-    pub controller_axis: [(bool, i32, i16); 18],
-    pub joystick_buttons: [(bool, u32); 14],
-    pub joystick_hat: [(bool, u32, i8); 14],
-    pub joystick_axis: [(bool, u32, i16); 18],
+    pub keys: [InputKeyButton; ui::input::PROFILE_SIZE],
+    pub controller_buttons: [InputKeyButton; ui::input::PROFILE_SIZE],
+    pub controller_axis: [InputControllerAxis; ui::input::PROFILE_SIZE],
+    pub joystick_buttons: [InputKeyButton; ui::input::PROFILE_SIZE],
+    pub joystick_hat: [InputJoystickHat; ui::input::PROFILE_SIZE],
+    pub joystick_axis: [InputControllerAxis; ui::input::PROFILE_SIZE],
+    pub dinput: bool,
 }
 
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -15,14 +36,45 @@ pub struct Input {
     pub input_profiles: std::collections::HashMap<String, InputProfile>,
     pub input_profile_binding: [String; 4],
     pub controller_assignment: [Option<String>; 4],
+    pub controller_enabled: [bool; 4],
+    pub emulate_vru: bool,
+}
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Video {
+    pub upscale: u32,
+    pub integer_scaling: bool,
+    pub fullscreen: bool,
 }
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct Config {
     pub input: Input,
+    pub video: Video,
+}
+
+impl Drop for Config {
+    fn drop(&mut self) {
+        write_config(self);
+    }
+}
+
+fn write_config(config: &Config) {
+    let dirs = ui::get_dirs();
+    let file_path = dirs.config_dir.join("config.json");
+    let f = std::fs::File::create(file_path).unwrap();
+    serde_json::to_writer_pretty(f, &config).unwrap();
 }
 
 impl Config {
     pub fn new() -> Config {
+        let dirs = ui::get_dirs();
+        let file_path = dirs.config_dir.join("config.json");
+        let config_file = std::fs::read(file_path);
+        if config_file.is_ok() {
+            let result = serde_json::from_slice(config_file.unwrap().as_ref());
+            if let Ok(result) = result {
+                return result;
+            }
+        }
         let mut input_profiles = std::collections::HashMap::new();
         input_profiles.insert("default".to_string(), ui::input::get_default_profile());
         Config {
@@ -35,6 +87,13 @@ impl Config {
                 ],
                 controller_assignment: [None, None, None, None],
                 input_profiles,
+                controller_enabled: [true, false, false, false],
+                emulate_vru: false,
+            },
+            video: Video {
+                upscale: 1,
+                integer_scaling: false,
+                fullscreen: false,
             },
         }
     }

src/ui/gui.rs

@@ -1,56 +1,95 @@
-use crate::device;
-use crate::ui;
+use crate::{device, netplay, ui};
 use eframe::egui;
 
+pub mod gui_netplay;
+
 pub struct GopherEguiApp {
+    dirs: ui::Dirs,
     configure_profile: bool,
     profile_name: String,
-    controllers: Vec<String>,
+    controller_names: Vec<String>,
     selected_controller: [i32; 4],
     selected_profile: [String; 4],
     input_profiles: Vec<String>,
+    controller_enabled: [bool; 4],
+    controller_paths: Vec<String>,
+    upscale: u32,
+    integer_scaling: bool,
+    fullscreen: bool,
+    emulate_vru: bool,
+    dinput: bool,
+    show_vru_dialog: bool,
+    vru_window_receiver: Option<tokio::sync::mpsc::Receiver<Vec<String>>>,
+    vru_word_notifier: Option<tokio::sync::mpsc::Sender<String>>,
+    vru_word_list: Vec<String>,
+    pub netplay: gui_netplay::GuiNetplay,
 }
 
-fn get_input_profiles(game_ui: &ui::Ui) -> Vec<String> {
+struct SaveConfig {
+    selected_controller: [i32; 4],
+    selected_profile: [String; 4],
+    controller_enabled: [bool; 4],
+    upscale: u32,
+    integer_scaling: bool,
+    fullscreen: bool,
+    emulate_vru: bool,
+}
+
+fn get_input_profiles(config: &ui::config::Config) -> Vec<String> {
     let mut profiles = vec![];
-    for key in game_ui.config.input.input_profiles.keys() {
-        profiles.push((*key).clone())
+    for key in config.input.input_profiles.keys() {
+        profiles.push(key.clone())
     }
     profiles
 }
 
-fn get_controllers(game_ui: &ui::Ui) -> Vec<String> {
+pub fn get_controller_names(game_ui: &ui::Ui) -> Vec<String> {
     let mut controllers: Vec<String> = vec![];
 
-    let joystick_subsystem = game_ui.joystick_subsystem.as_ref().unwrap();
-    let num_joysticks = joystick_subsystem.num_joysticks().unwrap();
-    for i in 0..num_joysticks {
-        controllers.push(joystick_subsystem.name_for_index(i).unwrap());
+    for offset in 0..game_ui.num_joysticks as isize {
+        let name = unsafe {
+            std::ffi::CStr::from_ptr(sdl3_sys::joystick::SDL_GetJoystickNameForID(
+                *(game_ui.joysticks.offset(offset)),
+            ))
+        };
+        controllers.push(name.to_string_lossy().to_string());
     }
+
     controllers
 }
 
+pub fn get_controller_paths(game_ui: &ui::Ui) -> Vec<String> {
+    let mut controller_paths: Vec<String> = vec![];
+
+    for offset in 0..game_ui.num_joysticks as isize {
+        let path = unsafe {
+            std::ffi::CStr::from_ptr(sdl3_sys::joystick::SDL_GetJoystickPathForID(
+                *(game_ui.joysticks.offset(offset)),
+            ))
+            .to_string_lossy()
+            .to_string()
+        };
+        controller_paths.push(path);
+    }
+
+    controller_paths
+}
+
 impl GopherEguiApp {
-    pub fn new() -> GopherEguiApp {
-        let game_ui = ui::Ui::new();
-        let joystick_subsystem = game_ui.joystick_subsystem.as_ref().unwrap();
-        let num_joysticks = joystick_subsystem.num_joysticks().unwrap();
-        let mut guids: Vec<String> = vec![];
-        for i in 0..num_joysticks {
-            guids.push(joystick_subsystem.device_guid(i).unwrap().to_string());
-        }
+    pub fn new(
+        cc: &eframe::CreationContext<'_>,
+        controller_paths: Vec<String>,
+        controller_names: Vec<String>,
+    ) -> GopherEguiApp {
+        add_fonts(&cc.egui_ctx);
+        let config = ui::config::Config::new();
+
         let mut selected_controller = [-1, -1, -1, -1];
-        for (pos, item) in game_ui
-            .config
-            .input
-            .controller_assignment
-            .iter()
-            .enumerate()
-        {
+        for (pos, item) in config.input.controller_assignment.iter().enumerate() {
             if item.is_some() {
-                for (guid_pos, guid) in guids.iter().enumerate() {
-                    if item.as_deref().unwrap() == *guid {
-                        selected_controller[pos] = guid_pos as i32;
+                for (path_pos, path) in controller_paths.iter().enumerate() {
+                    if item.as_deref().unwrap() == *path {
+                        selected_controller[pos] = path_pos as i32;
                         break;
                     }
                 }
@@ -59,125 +98,327 @@ impl GopherEguiApp {
         GopherEguiApp {
             configure_profile: false,
             profile_name: "".to_string(),
-            selected_profile: game_ui.config.input.input_profile_binding.clone(),
+            selected_profile: config.input.input_profile_binding.clone(),
             selected_controller,
-            controllers: get_controllers(&game_ui),
-            input_profiles: get_input_profiles(&game_ui),
+            controller_names,
+            input_profiles: get_input_profiles(&config),
+            controller_enabled: config.input.controller_enabled,
+            upscale: config.video.upscale,
+            integer_scaling: config.video.integer_scaling,
+            fullscreen: config.video.fullscreen,
+            emulate_vru: config.input.emulate_vru,
+            show_vru_dialog: false,
+            dinput: false,
+            controller_paths,
+            vru_window_receiver: None,
+            vru_word_notifier: None,
+            vru_word_list: Vec::new(),
+            netplay: Default::default(),
+            dirs: ui::get_dirs(),
         }
     }
 }
 
-fn save_config(game_ui: &mut ui::Ui, selected_controller: [i32; 4], selected_profile: [String; 4]) {
-    let joystick_subsystem = game_ui.joystick_subsystem.as_ref().unwrap();
-    for (pos, item) in selected_controller.iter().enumerate() {
+fn save_config(
+    config: &mut ui::config::Config,
+    controller_paths: Vec<String>,
+    save_config_items: SaveConfig,
+) {
+    for (pos, item) in save_config_items.selected_controller.iter().enumerate() {
         if *item != -1 {
-            game_ui.config.input.controller_assignment[pos] = Some(
-                joystick_subsystem
-                    .device_guid(*item as u32)
-                    .unwrap()
-                    .to_string(),
-            );
+            config.input.controller_assignment[pos] =
+                Some(controller_paths[*item as usize].clone());
         } else {
-            game_ui.config.input.controller_assignment[pos] = None
+            config.input.controller_assignment[pos] = None
         }
     }
 
-    game_ui.config.input.input_profile_binding = selected_profile;
+    config.input.input_profile_binding = save_config_items.selected_profile;
+    config.input.controller_enabled = save_config_items.controller_enabled;
+
+    config.video.upscale = save_config_items.upscale;
+    config.video.integer_scaling = save_config_items.integer_scaling;
+    config.video.fullscreen = save_config_items.fullscreen;
+    config.input.emulate_vru = save_config_items.emulate_vru;
 }
 
 impl Drop for GopherEguiApp {
     fn drop(&mut self) {
-        let mut game_ui = ui::Ui::new();
+        let save_config_items = SaveConfig {
+            selected_controller: self.selected_controller,
+            selected_profile: self.selected_profile.clone(),
+            controller_enabled: self.controller_enabled,
+            upscale: self.upscale,
+            integer_scaling: self.integer_scaling,
+            fullscreen: self.fullscreen,
+            emulate_vru: self.emulate_vru,
+        };
+        let mut config = ui::config::Config::new();
         save_config(
-            &mut game_ui,
-            self.selected_controller,
-            self.selected_profile.clone(),
+            &mut config,
+            self.controller_paths.clone(),
+            save_config_items,
         );
     }
 }
 
+fn configure_profile(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    egui::Window::new("Configure Input Profile")
+        // .open(&mut self.configure_profile)
+        .show(ctx, |ui| {
+            ui.horizontal(|ui| {
+                let name_label = ui.label("Profile Name:");
+                ui.text_edit_singleline(&mut app.profile_name)
+                    .labelled_by(name_label.id);
+            });
+            ui.checkbox(&mut app.dinput, "Use DirectInput");
+            ui.horizontal(|ui| {
+                if ui.button("Configure Profile").clicked() {
+                    let profile_name = app.profile_name.clone();
+                    let dinput = app.dinput;
+                    std::thread::spawn(move || {
+                        let mut game_ui = ui::Ui::new();
+                        ui::input::configure_input_profile(&mut game_ui, profile_name, dinput);
+                    });
+                    app.configure_profile = false;
+                    if !app.profile_name.is_empty()
+                        && !app.input_profiles.contains(&app.profile_name)
+                    {
+                        app.input_profiles.push(app.profile_name.clone())
+                    }
+                };
+                ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                    if ui.button("Close").clicked() {
+                        app.configure_profile = false
+                    };
+                })
+            });
+        });
+}
+
+fn show_vru_dialog(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    ctx.show_viewport_immediate(
+        egui::ViewportId::from_hash_of("vru_dialog"),
+        egui::ViewportBuilder::default()
+            .with_title("What would you like to say?")
+            .with_always_on_top(),
+        |ctx, class| {
+            assert!(
+                class == egui::ViewportClass::Immediate,
+                "This egui backend doesn't support multiple viewports"
+            );
+            egui::CentralPanel::default().show(ctx, |ui| {
+                egui::Grid::new("vru_words").show(ui, |ui| {
+                    for (i, v) in app.vru_word_list.iter().enumerate() {
+                        if i % 5 == 0 {
+                            ui.end_row();
+                        }
+                        if ui.button((*v).to_string()).clicked() {
+                            app.vru_word_notifier
+                                .as_ref()
+                                .unwrap()
+                                .try_send(v.clone())
+                                .unwrap();
+                            app.show_vru_dialog = false;
+                        }
+                    }
+                });
+            });
+
+            if ctx.input(|i| i.viewport().close_requested()) {
+                app.vru_word_notifier
+                    .as_ref()
+                    .unwrap()
+                    .try_send(String::from(""))
+                    .unwrap();
+                app.show_vru_dialog = false;
+            }
+        },
+    );
+}
+
+pub fn open_rom(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    let netplay;
+
+    let selected_controller = app.selected_controller;
+    let selected_profile = app.selected_profile.clone();
+    let controller_enabled = app.controller_enabled;
+    let upscale = app.upscale;
+    let integer_scaling = app.integer_scaling;
+    let fullscreen = app.fullscreen;
+    let emulate_vru = app.emulate_vru;
+    let peer_addr;
+    let session;
+    let player_number;
+    let cache_dir = app.dirs.cache_dir.clone();
+    let controller_paths = app.controller_paths.clone();
+
+    if app.netplay.player_name.is_empty() {
+        netplay = false;
+        peer_addr = None;
+        session = None;
+        player_number = None;
+    } else {
+        netplay = true;
+        peer_addr = app.netplay.peer_addr;
+        session = app.netplay.waiting_session.clone();
+        player_number = Some(app.netplay.player_number);
+    }
+
+    let (vru_window_notifier, vru_window_receiver): (
+        tokio::sync::mpsc::Sender<Vec<String>>,
+        tokio::sync::mpsc::Receiver<Vec<String>>,
+    ) = tokio::sync::mpsc::channel(1);
+
+    let (vru_word_notifier, vru_word_receiver): (
+        tokio::sync::mpsc::Sender<String>,
+        tokio::sync::mpsc::Receiver<String>,
+    ) = tokio::sync::mpsc::channel(1);
+
+    if emulate_vru && !netplay {
+        app.vru_window_receiver = Some(vru_window_receiver);
+        app.vru_word_notifier = Some(vru_word_notifier);
+    } else {
+        app.vru_window_receiver = None;
+        app.vru_word_notifier = None;
+    }
+
+    let rom_contents = app.netplay.rom_contents.clone();
+    let gui_ctx = ctx.clone();
+
+    let mut task = None;
+    if !netplay {
+        task = Some(rfd::AsyncFileDialog::new().pick_file());
+    }
+    tokio::spawn(async move {
+        let file = if !netplay { task.unwrap().await } else { None };
+
+        std::thread::Builder::new()
+            .name("n64".to_string())
+            .stack_size(env!("N64_STACK_SIZE").parse().unwrap())
+            .spawn(move || {
+                let save_config_items = SaveConfig {
+                    selected_controller,
+                    selected_profile,
+                    controller_enabled,
+                    upscale,
+                    integer_scaling,
+                    fullscreen,
+                    emulate_vru,
+                };
+
+                if file.is_some() || netplay {
+                    let running_file = cache_dir.join("game_running");
+                    if running_file.exists() {
+                        println!("Game already running");
+                        return;
+                    }
+                    let result = std::fs::File::create(running_file.clone());
+                    if result.is_err() {
+                        panic!("could not create running file: {}", result.err().unwrap())
+                    }
+
+                    let mut device = device::Device::new();
+                    save_config(&mut device.ui.config, controller_paths, save_config_items);
+
+                    if netplay {
+                        device.netplay = Some(netplay::init(
+                            peer_addr.unwrap(),
+                            session.unwrap(),
+                            player_number.unwrap(),
+                        ));
+                        device.ui.fullscreen = fullscreen;
+                        device::run_game(rom_contents, &mut device);
+                        netplay::close(&mut device);
+                    } else {
+                        if emulate_vru {
+                            device.vru_window.window_notifier = Some(vru_window_notifier);
+                            device.vru_window.word_receiver = Some(vru_word_receiver);
+                            device.vru_window.gui_ctx = Some(gui_ctx);
+                        }
+
+                        let rom_contents = device::get_rom_contents(file.unwrap().path());
+                        if rom_contents.is_empty() {
+                            println!("Could not read rom file");
+                        } else {
+                            device.ui.fullscreen = fullscreen;
+                            device::run_game(rom_contents, &mut device);
+                        }
+                    }
+                    let result = std::fs::remove_file(running_file);
+                    if result.is_err() {
+                        panic!("could not remove running file: {}", result.err().unwrap())
+                    }
+                }
+            })
+            .unwrap();
+    });
+}
+
 impl eframe::App for GopherEguiApp {
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        if self.netplay.create {
+            gui_netplay::netplay_create(self, ctx);
+        }
+
+        if self.netplay.join {
+            gui_netplay::netplay_join(self, ctx);
+        }
+
+        if self.netplay.wait {
+            gui_netplay::netplay_wait(self, ctx);
+        }
+
+        if !self.netplay.error.is_empty() {
+            gui_netplay::netplay_error(self, ctx, self.netplay.error.clone());
+        }
+
         if self.configure_profile {
-            egui::Window::new("Configure Input Profile")
-                // .open(&mut self.configure_profile)
-                .show(ctx, |ui| {
-                    ui.horizontal(|ui| {
-                        let name_label = ui.label("Profile Name: ");
-                        ui.text_edit_singleline(&mut self.profile_name)
-                            .labelled_by(name_label.id);
-                    });
-                    ui.horizontal(|ui| {
-                        if ui.button("Configure Profile").clicked() {
-                            let profile_name = self.profile_name.clone();
-                            execute(async {
-                                let mut game_ui = ui::Ui::new();
-                                ui::input::configure_input_profile(&mut game_ui, profile_name);
-                            });
-                            self.configure_profile = false;
-                            if !self.profile_name.is_empty()
-                                && !self.input_profiles.contains(&self.profile_name)
-                            {
-                                self.input_profiles.push(self.profile_name.clone())
-                            }
-                        };
-                        if ui.button("Close").clicked() {
-                            self.configure_profile = false
-                        };
-                    });
-                });
+            configure_profile(self, ctx);
         }
 
         egui::CentralPanel::default().show(ctx, |ui| {
             if self.configure_profile {
                 ui.disable()
             }
+            egui::Grid::new("button_grid")
+                .min_col_width(200.0)
+                .show(ui, |ui| {
+                    if ui.button("Open ROM").clicked() {
+                        open_rom(self, ctx);
+                    }
+                    if ui.button("Netplay: Create Session").clicked()
+                        && !self.dirs.cache_dir.join("game_running").exists()
+                    {
+                        self.netplay.create = true;
+                    }
 
-            if ui.button("Open ROM").clicked() {
-                // Spawn dialog on main thread
-                let task = rfd::AsyncFileDialog::new().pick_file();
-                let selected_controller = self.selected_controller;
-                let selected_profile = self.selected_profile.clone();
-                execute(async move {
-                    let file = task.await;
+                    ui.end_row();
 
-                    if let Some(file) = file {
-                        let running_file = dirs::cache_dir()
-                            .unwrap()
-                            .join("gopher64")
-                            .join("game_running");
-                        if running_file.exists() {
-                            return;
-                        }
-                        let _ = std::fs::File::create(running_file.clone());
-                        let mut device = device::Device::new();
-                        save_config(&mut device.ui, selected_controller, selected_profile);
-                        device::run_game(std::path::Path::new(file.path()), &mut device, false);
-                        let _ = std::fs::remove_file(running_file.clone());
+                    if ui.button("Configure Input Profile").clicked()
+                        && !self.dirs.cache_dir.join("game_running").exists()
+                    {
+                        self.configure_profile = true;
+                    }
+
+                    if ui.button("Netplay: Join Session").clicked()
+                        && !self.dirs.cache_dir.join("game_running").exists()
+                    {
+                        self.netplay.join = true;
                     }
                 });
-            }
-
-            if ui.button("Configure Input Profile").clicked() {
-                let running_file = dirs::cache_dir()
-                    .unwrap()
-                    .join("gopher64")
-                    .join("game_running");
-                if running_file.exists() {
-                    return;
-                }
-                self.configure_profile = true;
-            }
 
             ui.add_space(32.0);
             ui.label("Controller Config:");
-            egui::Grid::new("some_unique_id").show(ui, |ui| {
+            egui::Grid::new("controller_config").show(ui, |ui| {
                 ui.label("Port");
+                ui.label("Enabled");
                 ui.label("Profile");
                 ui.label("Controller");
                 ui.end_row();
                 for i in 0..4 {
                     ui.label(format!("{}", i + 1));
+                    ui.checkbox(&mut self.controller_enabled[i], "");
 
                     egui::ComboBox::from_id_salt(format!("profile-combo-{}", i))
                         .selected_text(self.selected_profile[i].clone())
@@ -194,7 +435,7 @@ impl eframe::App for GopherEguiApp {
                     let controller_text = if self.selected_controller[i] == -1 {
                         "None".to_string()
                     } else {
-                        self.controllers[self.selected_controller[i] as usize].clone()
+                        self.controller_names[self.selected_controller[i] as usize].clone()
                     };
                     egui::ComboBox::from_id_salt(format!("controller-combo-{}", i))
                         .selected_text(controller_text)
@@ -204,23 +445,90 @@ impl eframe::App for GopherEguiApp {
                                 -1,
                                 "None".to_string(),
                             );
-                            for j in 0..self.controllers.len() {
+                            for j in 0..self.controller_names.len() {
                                 ui.selectable_value(
                                     &mut self.selected_controller[i],
                                     j as i32,
-                                    self.controllers[j].clone(),
+                                    self.controller_names[j].clone(),
                                 );
                             }
                         });
                     ui.end_row();
                 }
             });
+            ui.add_space(32.0);
+            let upscale_values = [1, 2, 4];
+            let mut slider_value = match self.upscale {
+                1 => 0,
+                2 => 1,
+                4 => 2,
+                _ => 0,
+            };
+            let display_text = format!("{}x Resolution", upscale_values[slider_value]);
+            if ui
+                .add(
+                    egui::Slider::new(&mut slider_value, 0..=2)
+                        .show_value(false)
+                        .text(display_text),
+                )
+                .changed()
+            {
+                self.upscale = upscale_values[slider_value];
+            };
+            ui.checkbox(&mut self.integer_scaling, "Integer Scaling");
+            ui.checkbox(&mut self.fullscreen, "Fullscreen (Esc closes game)");
+            ui.add_space(32.0);
+
+            ui.checkbox(
+                &mut self.emulate_vru,
+                "Emulate VRU (connects VRU to controller port 4)",
+            );
+
             ui.add_space(32.0);
             ui.label(format!("Version: {}", env!("CARGO_PKG_VERSION")));
         });
+
+        if self.emulate_vru && self.vru_window_receiver.is_some() {
+            let result = self.vru_window_receiver.as_mut().unwrap().try_recv();
+            if result.is_ok() {
+                self.show_vru_dialog = true;
+                self.vru_word_list = result.unwrap();
+            }
+        }
+
+        if self.show_vru_dialog {
+            show_vru_dialog(self, ctx);
+        }
     }
 }
 
-fn execute<F: std::future::Future<Output = ()> + Send + 'static>(f: F) {
-    std::thread::spawn(move || futures::executor::block_on(f));
+fn add_fonts(ctx: &egui::Context) {
+    ctx.add_font(eframe::epaint::text::FontInsert::new(
+        "regular_font",
+        egui::FontData::from_static(include_bytes!("../../data/Roboto-Regular.ttf")),
+        vec![
+            eframe::epaint::text::InsertFontFamily {
+                family: egui::FontFamily::Proportional,
+                priority: egui::epaint::text::FontPriority::Highest,
+            },
+            eframe::epaint::text::InsertFontFamily {
+                family: egui::FontFamily::Monospace,
+                priority: egui::epaint::text::FontPriority::Highest,
+            },
+        ],
+    ));
+    ctx.add_font(eframe::epaint::text::FontInsert::new(
+        "japanese_font",
+        egui::FontData::from_static(include_bytes!("../../data/NotoSansJP-Regular.ttf")),
+        vec![
+            eframe::epaint::text::InsertFontFamily {
+                family: egui::FontFamily::Proportional,
+                priority: egui::epaint::text::FontPriority::Lowest,
+            },
+            eframe::epaint::text::InsertFontFamily {
+                family: egui::FontFamily::Monospace,
+                priority: egui::epaint::text::FontPriority::Lowest,
+            },
+        ],
+    ));
 }

src/ui/gui/gui_netplay.rs

@@ -0,0 +1,913 @@
+use crate::device;
+use crate::ui::gui::GopherEguiApp;
+use crate::ui::{self, gui};
+use eframe::egui;
+use sha2::{Digest, Sha256};
+
+const NETPLAY_VERSION: i32 = 17;
+const EMU_NAME: &str = "gopher64";
+
+#[derive(Default)]
+pub struct GameInfo {
+    pub md5: String,
+    pub game_name: String,
+    pub rom_label: String,
+    pub rom_contents: Vec<u8>,
+}
+
+#[derive(PartialEq, Default)]
+pub struct NetplayServer {
+    pub name: String,
+    pub ip: String,
+}
+
+#[derive(Default)]
+pub struct GuiNetplay {
+    pub create: bool,
+    pub join: bool,
+    pub wait: bool,
+    pub session_name: String,
+    pub password: String,
+    pub player_name: String,
+    pub error: String,
+    pub create_rom_label: String,
+    pub join_rom_label: String,
+    pub send_chat: bool,
+    pub have_sessions: Option<NetplayServer>,
+    pub begin_game: bool,
+    pub chat_log: String,
+    pub chat_message: String,
+    pub selected_session: Option<NetplayRoom>,
+    pub pending_begin: bool,
+    pub peer_addr: Option<std::net::SocketAddr>,
+    pub motd: String,
+    pub sessions: Vec<NetplayRoom>,
+    pub rom_contents: Vec<u8>,
+    pub player_number: u8,
+    pub player_names: [String; 4],
+    pub server: NetplayServer,
+    pub socket_waiting: bool,
+    pub game_info: GameInfo,
+    pub servers: Vec<NetplayServer>,
+    pub waiting_session: Option<NetplayRoom>,
+    pub socket:
+        Option<tungstenite::WebSocket<tungstenite::stream::MaybeTlsStream<std::net::TcpStream>>>,
+    pub server_receiver:
+        Option<tokio::sync::mpsc::Receiver<std::collections::HashMap<String, String>>>,
+    pub game_info_receiver: Option<tokio::sync::mpsc::Receiver<GameInfo>>,
+    pub broadcast_socket: Option<std::net::UdpSocket>,
+    pub broadcast_timer: Option<std::time::Instant>,
+}
+
+#[derive(serde::Serialize, serde::Deserialize, PartialEq, Default, Clone)]
+pub struct NetplayRoom {
+    room_name: Option<String>,
+    password: Option<String>,
+    protected: Option<bool>,
+    #[serde(rename = "MD5")]
+    md5: Option<String>,
+    game_name: Option<String>,
+    pub port: Option<i32>,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct NetplayMessage {
+    #[serde(rename = "type")]
+    message_type: String,
+    player_name: Option<String>,
+    client_sha: Option<String>,
+    netplay_version: Option<i32>,
+    emulator: Option<String>,
+    room: Option<NetplayRoom>,
+    accept: Option<i32>,
+    message: Option<String>,
+    auth: Option<String>,
+    player_names: Option<[String; 4]>,
+    #[serde(rename = "authTime")]
+    auth_time: Option<String>,
+    rooms: Option<Vec<NetplayRoom>>,
+}
+
+fn get_servers(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.servers.is_empty() {
+        if app.netplay.broadcast_socket.is_none() {
+            app.netplay.broadcast_socket = Some(
+                std::net::UdpSocket::bind((std::net::Ipv4Addr::UNSPECIFIED, 0))
+                    .expect("couldn't bind to address"),
+            );
+            let socket = app.netplay.broadcast_socket.as_ref().unwrap();
+            socket
+                .set_broadcast(true)
+                .expect("set_broadcast call failed");
+            socket
+                .set_nonblocking(true)
+                .expect("could not set up socket");
+            let data: [u8; 1] = [1];
+            socket
+                .send_to(&data, (std::net::Ipv4Addr::BROADCAST, 45000))
+                .expect("couldn't send data");
+            app.netplay.broadcast_timer =
+                Some(std::time::Instant::now() + std::time::Duration::from_secs(5));
+            ctx.request_repaint();
+        }
+        if app.netplay.server_receiver.is_none() {
+            let (tx, rx) = tokio::sync::mpsc::channel(1);
+            app.netplay.server_receiver = Some(rx);
+            let gui_ctx = ctx.clone();
+            let task = reqwest::get("https://m64p.s3.amazonaws.com/servers.json");
+            tokio::spawn(async move {
+                let response = task.await;
+                if let Ok(response) = response {
+                    tx.send(response.json().await.unwrap()).await.unwrap();
+                    gui_ctx.request_repaint();
+                }
+            });
+        }
+    }
+    if app.netplay.broadcast_timer.is_some()
+        && std::time::Instant::now() > app.netplay.broadcast_timer.unwrap()
+    {
+        app.netplay.broadcast_timer = None;
+    }
+    if app.netplay.broadcast_socket.is_some() && app.netplay.broadcast_timer.is_some() {
+        let mut buffer = [0; 1024];
+        let result = app
+            .netplay
+            .broadcast_socket
+            .as_ref()
+            .unwrap()
+            .recv_from(&mut buffer);
+        if result.is_ok() {
+            let (amt, _src) = result.unwrap();
+            let data: std::collections::HashMap<String, String> =
+                serde_json::from_slice(&buffer[..amt]).unwrap();
+            for server in data.iter() {
+                let (server_name, server_ip) = server;
+                app.netplay.servers.push(NetplayServer {
+                    name: server_name.to_string(),
+                    ip: server_ip.to_string(),
+                });
+                app.netplay.server = NetplayServer {
+                    name: server.0.clone(),
+                    ip: server.1.clone(),
+                };
+            }
+            app.netplay.broadcast_socket = None;
+        }
+        ctx.request_repaint();
+    }
+    if app.netplay.server_receiver.is_some() {
+        let result = app.netplay.server_receiver.as_mut().unwrap().try_recv();
+        if result.is_ok() {
+            for server in result.unwrap().iter() {
+                app.netplay.servers.push(NetplayServer {
+                    name: server.0.clone(),
+                    ip: server.1.clone(),
+                });
+            }
+            app.netplay.server_receiver = None;
+            if app.netplay.server.name.is_empty() {
+                let first_server = app.netplay.servers.first().unwrap();
+                app.netplay.server = NetplayServer {
+                    name: first_server.name.clone(),
+                    ip: first_server.ip.clone(),
+                };
+            }
+        }
+        ctx.request_repaint();
+    }
+}
+
+pub fn netplay_create(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    egui::Window::new("Create Netplay Session").show(ctx, |ui| {
+        egui::Grid::new("netplay_create_grid").show(ui, |ui| {
+            let profile_name_label = ui.label("Session Name:");
+            let mut size = ui.spacing().interact_size;
+            size.x = 200.0;
+            ui.add_sized(size, |ui: &mut egui::Ui| {
+                ui.text_edit_singleline(&mut app.netplay.session_name)
+                    .labelled_by(profile_name_label.id)
+            });
+
+            ui.end_row();
+
+            let password_label = ui.label("Password (Optional):");
+
+            ui.text_edit_singleline(&mut app.netplay.password)
+                .labelled_by(password_label.id);
+
+            ui.end_row();
+
+            ui.label("ROM");
+            if app.netplay.create_rom_label.is_empty() {
+                app.netplay.create_rom_label = "Open ROM".to_string();
+            }
+            if ui.button(&app.netplay.create_rom_label).clicked() {
+                let (tx, rx) = tokio::sync::mpsc::channel(1);
+                app.netplay.game_info_receiver = Some(rx);
+                let gui_ctx = ctx.clone();
+                app.netplay.create_rom_label = "Inspecting ROM".to_string();
+                let task = rfd::AsyncFileDialog::new().pick_file();
+                tokio::spawn(async move {
+                    let file = task.await;
+
+                    if let Some(file) = file {
+                        parse_rom_file(file, tx).await;
+                    } else {
+                        tx.send(GameInfo {
+                            md5: "".to_string(),
+                            game_name: "".to_string(),
+                            rom_label: "Open ROM".to_string(),
+                            rom_contents: vec![],
+                        })
+                        .await
+                        .unwrap();
+                    }
+                    gui_ctx.request_repaint();
+                });
+            }
+
+            ui.end_row();
+
+            let player_name_label = ui.label("Player Name:");
+
+            ui.text_edit_singleline(&mut app.netplay.player_name)
+                .labelled_by(player_name_label.id);
+
+            ui.end_row();
+
+            ui.label("Server:");
+
+            get_servers(app, ctx);
+
+            if app.netplay.game_info_receiver.is_some() {
+                let result = app.netplay.game_info_receiver.as_mut().unwrap().try_recv();
+                if result.is_ok() {
+                    app.netplay.game_info_receiver = None;
+                    let data = result.unwrap();
+                    if !data.md5.is_empty() {
+                        app.netplay.game_info = data;
+                        app.netplay.rom_contents = app.netplay.game_info.rom_contents.clone();
+                        app.netplay.create_rom_label = app.netplay.game_info.rom_label.clone();
+                    } else {
+                        app.netplay.create_rom_label = data.rom_label;
+                    }
+                }
+                ctx.request_repaint();
+            }
+
+            egui::ComboBox::from_id_salt("server-combobox")
+                .selected_text(app.netplay.server.name.to_string())
+                .show_ui(ui, |ui| {
+                    for server in app.netplay.servers.iter() {
+                        ui.selectable_value(
+                            &mut app.netplay.server,
+                            NetplayServer {
+                                name: server.name.clone(),
+                                ip: server.ip.clone(),
+                            },
+                            server.name.clone(),
+                        );
+                    }
+                });
+
+            ui.end_row();
+
+            if app.netplay.socket_waiting {
+                let data = app.netplay.socket.as_mut().unwrap().read();
+                if data.is_ok() {
+                    let message: NetplayMessage =
+                        serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+                    if message.accept.unwrap() == 0 {
+                        if message.message_type == "reply_create_room" {
+                            app.netplay.create = false;
+                            app.netplay.wait = true;
+                            app.netplay.waiting_session = Some(message.room.unwrap());
+                        }
+                    } else {
+                        app.netplay.error = message.message.unwrap();
+                    }
+                    app.netplay.socket_waiting = false;
+                }
+                ctx.request_repaint();
+            }
+        });
+        ui.horizontal(|ui| {
+            if ui.button("Create Session").clicked() {
+                if app.netplay.player_name.is_empty() {
+                    app.netplay.error = "Player Name cannot be empty".to_string();
+                } else if app.netplay.session_name.is_empty() {
+                    app.netplay.error = "Session Name cannot be empty".to_string();
+                } else if app.netplay.game_info.md5.is_empty() {
+                    app.netplay.error = "ROM not loaded".to_string();
+                } else {
+                    let now_utc = chrono::Utc::now().timestamp_millis().to_string();
+                    let hasher = Sha256::new().chain_update(&now_utc).chain_update(EMU_NAME);
+                    let mut game_name = app.netplay.game_info.game_name.to_string();
+                    if game_name.is_empty() {
+                        // If the ROM doesn't report a name, use the filename
+                        game_name = app.netplay.create_rom_label.clone();
+                    }
+                    let netplay_message = NetplayMessage {
+                        message_type: "request_create_room".to_string(),
+                        player_name: Some(app.netplay.player_name.clone()),
+                        client_sha: Some(env!("GIT_HASH").to_string()),
+                        netplay_version: Some(NETPLAY_VERSION),
+                        emulator: Some(EMU_NAME.to_string()),
+                        accept: None,
+                        message: None,
+                        rooms: None,
+                        auth_time: Some(now_utc),
+                        player_names: None,
+                        auth: Some(format!("{:x}", hasher.finalize())),
+                        room: Some(NetplayRoom {
+                            room_name: Some(app.netplay.session_name.clone()),
+                            password: Some(app.netplay.password.clone()),
+                            game_name: Some(game_name),
+                            md5: Some(app.netplay.game_info.md5.clone()),
+                            protected: None,
+                            port: None,
+                        }),
+                    };
+                    let (mut socket, _response) =
+                        tungstenite::connect(&app.netplay.server.ip).expect("Can't connect");
+                    socket
+                        .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                            serde_json::to_vec(&netplay_message).unwrap(),
+                        )))
+                        .unwrap();
+                    match socket.get_mut() {
+                        tungstenite::stream::MaybeTlsStream::Plain(stream) => {
+                            app.netplay.peer_addr = Some(stream.peer_addr().unwrap());
+                            stream.set_nonblocking(true)
+                        }
+                        _ => unimplemented!(),
+                    }
+                    .expect("could not set socket to non-blocking");
+                    app.netplay.socket_waiting = true;
+                    app.netplay.socket = Some(socket);
+                }
+            }
+
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        loop {
+                            match socket.read() {
+                                Err(tungstenite::Error::ConnectionClosed) => break,
+                                _ => continue,
+                            };
+                        }
+                    }
+                    app.netplay = Default::default();
+                };
+            })
+        });
+    });
+}
+
+fn get_sessions(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.have_sessions.is_some()
+        && app.netplay.server != *app.netplay.have_sessions.as_ref().unwrap()
+    {
+        // User has changed the server
+        app.netplay.have_sessions = None;
+        app.netplay.socket = None;
+    }
+    if app.netplay.socket.is_none() {
+        let (mut sock, _response) =
+            tungstenite::connect(&app.netplay.server.ip).expect("Can't connect");
+        match sock.get_mut() {
+            tungstenite::stream::MaybeTlsStream::Plain(stream) => {
+                app.netplay.peer_addr = Some(stream.peer_addr().unwrap());
+                stream.set_nonblocking(true)
+            }
+            _ => unimplemented!(),
+        }
+        .expect("could not set socket to non-blocking");
+        app.netplay.socket = Some(sock);
+    }
+    let socket = app.netplay.socket.as_mut().unwrap();
+    if app.netplay.have_sessions.is_none() {
+        let now_utc = chrono::Utc::now().timestamp_millis().to_string();
+        let hasher = Sha256::new().chain_update(&now_utc).chain_update(EMU_NAME);
+        let request_rooms = NetplayMessage {
+            message_type: "request_get_rooms".to_string(),
+            player_name: None,
+            client_sha: None,
+            netplay_version: Some(NETPLAY_VERSION),
+            player_names: None,
+            emulator: Some(EMU_NAME.to_string()),
+            accept: None,
+            rooms: None,
+            message: None,
+            auth_time: Some(now_utc),
+            auth: Some(format!("{:x}", hasher.finalize())),
+            room: None,
+        };
+
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&request_rooms).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.have_sessions = Some(NetplayServer {
+            name: app.netplay.server.name.clone(),
+            ip: app.netplay.server.ip.clone(),
+        });
+        app.netplay.socket_waiting = true;
+        ctx.request_repaint();
+    }
+}
+
+async fn parse_rom_file(file: rfd::FileHandle, tx: tokio::sync::mpsc::Sender<GameInfo>) {
+    let rom_contents = device::get_rom_contents(file.path());
+    if !rom_contents.is_empty() {
+        let hash = device::cart::rom::calculate_hash(&rom_contents);
+        let game_name = ui::storage::get_game_name(&rom_contents);
+
+        tx.send(GameInfo {
+            md5: hash,
+            game_name,
+            rom_label: file.file_name(),
+            rom_contents,
+        })
+        .await
+        .unwrap();
+    } else {
+        tx.send(GameInfo {
+            md5: "".to_string(),
+            game_name: "".to_string(),
+            rom_label: "Invalid ROM".to_string(),
+            rom_contents: vec![],
+        })
+        .await
+        .unwrap();
+    }
+}
+
+pub fn netplay_join(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    if app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        let data = socket.read();
+        if data.is_ok() {
+            let message: NetplayMessage =
+                serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+            if message.accept.unwrap() == 0 {
+                if message.message_type == "reply_get_rooms" {
+                    if message.rooms.is_some() {
+                        app.netplay.sessions = message.rooms.unwrap();
+                    }
+                } else if message.message_type == "reply_join_room" {
+                    app.netplay.join = false;
+                    app.netplay.wait = true;
+                    app.netplay.waiting_session = Some(message.room.unwrap());
+                }
+                app.netplay.socket_waiting = false;
+            } else {
+                app.netplay.error = message.message.unwrap();
+                app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+            }
+        }
+        ctx.request_repaint();
+    }
+    if app.netplay.game_info_receiver.is_some() {
+        let result = app.netplay.game_info_receiver.as_mut().unwrap().try_recv();
+        if result.is_ok() {
+            app.netplay.game_info_receiver = None;
+            let data = result.unwrap();
+            if !data.md5.is_empty() {
+                app.netplay.game_info = data;
+                app.netplay.rom_contents = app.netplay.game_info.rom_contents.clone();
+
+                let netplay_message = NetplayMessage {
+                    message_type: "request_join_room".to_string(),
+                    player_name: Some(app.netplay.player_name.clone()),
+                    client_sha: Some(env!("GIT_HASH").to_string()),
+                    netplay_version: None,
+                    emulator: None,
+                    accept: None,
+                    message: None,
+                    rooms: None,
+                    auth_time: None,
+                    player_names: None,
+                    auth: None,
+                    room: Some(NetplayRoom {
+                        room_name: None,
+                        password: Some(app.netplay.password.clone()),
+                        game_name: None,
+                        md5: Some(app.netplay.game_info.md5.clone()),
+                        protected: None,
+                        port: app.netplay.selected_session.as_ref().unwrap().port,
+                    }),
+                };
+                let socket = app.netplay.socket.as_mut().unwrap();
+                socket
+                    .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                        serde_json::to_vec(&netplay_message).unwrap(),
+                    )))
+                    .unwrap();
+
+                app.netplay.socket_waiting = true;
+            } else {
+                app.netplay.error = data.rom_label;
+                app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+            }
+        }
+        ctx.request_repaint();
+    }
+    egui::Window::new("Join Netplay Session").show(ctx, |ui| {
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 100.0;
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.player_name).hint_text("Player name"),
+            );
+
+            get_servers(app, ctx);
+
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Refresh").clicked() {
+                    app.netplay.socket = None;
+                    app.netplay.have_sessions = None;
+                    app.netplay.selected_session = None;
+                    ctx.request_repaint();
+                }
+                egui::ComboBox::from_id_salt("server-combobox")
+                    .selected_text(app.netplay.server.name.to_string())
+                    .show_ui(ui, |ui| {
+                        for server in app.netplay.servers.iter() {
+                            ui.selectable_value(
+                                &mut app.netplay.server,
+                                NetplayServer {
+                                    name: server.name.clone(),
+                                    ip: server.ip.clone(),
+                                },
+                                server.name.clone(),
+                            );
+                        }
+                    });
+            });
+        });
+        if !app.netplay.server.name.is_empty() {
+            get_sessions(app, ctx);
+        }
+        ui.add_space(16.0);
+        if app.netplay.sessions.is_empty() {
+            ui.label("No sessions available");
+        } else {
+            egui::Grid::new("netplay_join_grid").show(ui, |ui| {
+                ui.label(egui::RichText::new("Session Name (click to select)").underline());
+                ui.label(egui::RichText::new("Game Name").underline());
+                ui.label(egui::RichText::new("Password Protected").underline());
+                ui.end_row();
+
+                for room in app.netplay.sessions.iter() {
+                    ui.selectable_value(
+                        &mut app.netplay.selected_session,
+                        Some(room.clone()),
+                        room.room_name.as_ref().unwrap(),
+                    );
+                    ui.label(room.game_name.as_ref().unwrap());
+                    ui.label(room.protected.unwrap_or(false).to_string());
+                    ui.end_row();
+                }
+            });
+        }
+        ui.add_space(16.0);
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 130.0;
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.password)
+                    .hint_text("Password (if required)"),
+            );
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        loop {
+                            match socket.read() {
+                                Err(tungstenite::Error::ConnectionClosed) => break,
+                                _ => continue,
+                            };
+                        }
+                    }
+                    app.netplay = Default::default();
+                };
+                if app.netplay.join_rom_label.is_empty() {
+                    app.netplay.join_rom_label = "Join Session (Open ROM)".to_string();
+                }
+                if ui.button(&app.netplay.join_rom_label).clicked() {
+                    if app.netplay.player_name.is_empty() {
+                        app.netplay.error = "Player Name cannot be empty".to_string();
+                    } else if app.netplay.selected_session.is_none() {
+                        app.netplay.error = "No session selected".to_string();
+                    } else if app
+                        .netplay
+                        .selected_session
+                        .as_ref()
+                        .unwrap()
+                        .protected
+                        .unwrap()
+                        && app.netplay.password.is_empty()
+                    {
+                        app.netplay.error = "Session requires a password".to_string();
+                    } else {
+                        let (tx, rx) = tokio::sync::mpsc::channel(1);
+                        app.netplay.game_info_receiver = Some(rx);
+                        let gui_ctx = ctx.clone();
+                        app.netplay.join_rom_label = "Inspecting ROM".to_string();
+                        let task = rfd::AsyncFileDialog::new().pick_file();
+                        tokio::spawn(async move {
+                            let file = task.await;
+
+                            if let Some(file) = file {
+                                parse_rom_file(file, tx).await;
+                            } else {
+                                tx.send(GameInfo {
+                                    md5: "".to_string(),
+                                    game_name: "".to_string(),
+                                    rom_label: "No ROM selected".to_string(),
+                                    rom_contents: vec![],
+                                })
+                                .await
+                                .unwrap();
+                            }
+                            gui_ctx.request_repaint();
+                        });
+                    }
+                };
+            });
+        });
+    });
+}
+
+pub fn netplay_wait(app: &mut GopherEguiApp, ctx: &egui::Context) {
+    let motd_message = NetplayMessage {
+        message_type: "request_motd".to_string(),
+        player_name: None,
+        client_sha: None,
+        netplay_version: None,
+        emulator: None,
+        accept: None,
+        rooms: None,
+        player_names: None,
+        message: None,
+        auth_time: None,
+        auth: None,
+        room: None,
+    };
+    let request_players = NetplayMessage {
+        message_type: "request_players".to_string(),
+        player_name: None,
+        client_sha: None,
+        netplay_version: None,
+        player_names: None,
+        emulator: None,
+        rooms: None,
+        accept: None,
+        message: None,
+        auth_time: None,
+        auth: None,
+        room: Some(NetplayRoom {
+            room_name: None,
+            password: None,
+            game_name: None,
+            md5: None,
+            protected: None,
+            port: app.netplay.waiting_session.as_ref().unwrap().port,
+        }),
+    };
+
+    if !app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&motd_message).unwrap(),
+            )))
+            .unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&request_players).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.socket_waiting = true;
+    }
+
+    if app.netplay.begin_game {
+        let begin_game = NetplayMessage {
+            message_type: "request_begin_game".to_string(),
+            player_name: None,
+            client_sha: None,
+            netplay_version: None,
+            player_names: None,
+            rooms: None,
+            emulator: None,
+            accept: None,
+            message: None,
+            auth_time: None,
+            auth: None,
+            room: Some(NetplayRoom {
+                room_name: None,
+                password: None,
+                game_name: None,
+                md5: None,
+                protected: None,
+                port: app.netplay.waiting_session.as_ref().unwrap().port,
+            }),
+        };
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&begin_game).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.begin_game = false;
+    }
+
+    if app.netplay.send_chat {
+        let send_chat = NetplayMessage {
+            message_type: "request_chat_message".to_string(),
+            player_name: Some(app.netplay.player_name.clone()),
+            client_sha: None,
+            netplay_version: None,
+            player_names: None,
+            rooms: None,
+            emulator: None,
+            accept: None,
+            message: Some(app.netplay.chat_message.clone()),
+            auth_time: None,
+            auth: None,
+            room: Some(NetplayRoom {
+                room_name: None,
+                password: None,
+                game_name: None,
+                md5: None,
+                protected: None,
+                port: app.netplay.waiting_session.as_ref().unwrap().port,
+            }),
+        };
+        app.netplay.chat_message.clear();
+        let socket = app.netplay.socket.as_mut().unwrap();
+        socket
+            .send(tungstenite::Message::Binary(tungstenite::Bytes::from(
+                serde_json::to_vec(&send_chat).unwrap(),
+            )))
+            .unwrap();
+        app.netplay.send_chat = false;
+    }
+
+    if app.netplay.socket_waiting {
+        let socket = app.netplay.socket.as_mut().unwrap();
+        let data = socket.read();
+        if data.is_ok() {
+            let message: NetplayMessage =
+                serde_json::from_slice(&data.unwrap().into_data()).unwrap();
+            if message.accept.unwrap() == 0 {
+                if message.message_type == "reply_motd" {
+                    let re = regex::Regex::new(r"<[^>]*>").unwrap();
+                    app.netplay.motd = re
+                        .replace_all(message.message.unwrap().as_str(), "")
+                        .into_owned();
+                } else if message.message_type == "reply_players" {
+                    app.netplay.player_names = message.player_names.unwrap();
+                } else if message.message_type == "reply_chat_message" {
+                    app.netplay.chat_log.push_str(&message.message.unwrap());
+                    app.netplay.chat_log.push('\n');
+                } else if message.message_type == "reply_begin_game" {
+                    let mut player = 0;
+                    for (i, name) in app.netplay.player_names.iter().enumerate() {
+                        if *name == app.netplay.player_name {
+                            player = i;
+                            break;
+                        }
+                    }
+                    app.netplay.player_number = player as u8;
+
+                    if message.accept.unwrap() == 0 {
+                        socket.close(None).unwrap();
+                        loop {
+                            match socket.read() {
+                                Err(tungstenite::Error::ConnectionClosed) => break,
+                                _ => continue,
+                            };
+                        }
+
+                        gui::open_rom(app, ctx);
+                        app.netplay = Default::default();
+                        return;
+                    } else {
+                        app.netplay.error = message.message.unwrap();
+                    }
+                }
+            } else {
+                app.netplay.error = message.message.unwrap();
+            }
+        }
+        ctx.request_repaint();
+    }
+
+    egui::Window::new("Pending Netplay Session").show(ctx, |ui| {
+        egui::Grid::new("netplay_wait_grid_1").show(ui, |ui| {
+            ui.label("Session Name:");
+            let room_name = app
+                .netplay
+                .waiting_session
+                .as_ref()
+                .unwrap()
+                .room_name
+                .as_ref()
+                .unwrap();
+            let game_name = app
+                .netplay
+                .waiting_session
+                .as_ref()
+                .unwrap()
+                .game_name
+                .as_ref()
+                .unwrap();
+            ui.label(room_name);
+            ui.end_row();
+            ui.label("Game Name:");
+            ui.label(game_name);
+            ui.end_row();
+            for i in 0..4 {
+                ui.label(format!("Player {}:", i + 1));
+                ui.label(app.netplay.player_names[i].clone());
+                ui.end_row();
+            }
+        });
+        egui::ScrollArea::vertical()
+            .max_height(100.0)
+            .stick_to_bottom(true)
+            .show(ui, |ui| {
+                ui.add(
+                    egui::TextEdit::multiline(&mut app.netplay.chat_log)
+                        .interactive(false)
+                        .desired_width(ui.available_width()),
+                );
+            });
+
+        ui.horizontal(|ui| {
+            let mut size = ui.spacing().interact_size;
+            size.x = 200.0;
+
+            ui.add_sized(
+                size,
+                egui::TextEdit::singleline(&mut app.netplay.chat_message)
+                    .hint_text("Enter chat message here"),
+            );
+
+            if ui
+                .add_enabled(!app.netplay.send_chat, egui::Button::new("Send Message"))
+                .clicked()
+                && !app.netplay.chat_message.is_empty()
+            {
+                app.netplay.send_chat = true;
+            }
+        });
+
+        ui.add_space(16.0);
+        ui.label(app.netplay.motd.clone());
+        ui.add_space(16.0);
+
+        ui.horizontal(|ui| {
+            let button_enabled = app.netplay.player_name == app.netplay.player_names[0]
+                && !app.netplay.pending_begin;
+            if ui
+                .add_enabled(button_enabled, egui::Button::new("Start Session"))
+                .clicked()
+            {
+                app.netplay.begin_game = true;
+                app.netplay.pending_begin = true;
+            }
+            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                if ui.button("Close").clicked() {
+                    if let Some(socket) = app.netplay.socket.as_mut() {
+                        socket.close(None).unwrap();
+                        loop {
+                            match socket.read() {
+                                Err(tungstenite::Error::ConnectionClosed) => break,
+                                _ => continue,
+                            };
+                        }
+                    }
+                    app.netplay = Default::default();
+                };
+            });
+        });
+    });
+}
+
+pub fn netplay_error(app: &mut GopherEguiApp, ctx: &egui::Context, error: String) {
+    egui::Window::new("Netplay Error").show(ctx, |ui| {
+        ui.label(error);
+        if ui.button("Close").clicked() {
+            app.netplay.error = "".to_string();
+        };
+    });
+}

src/ui/storage.rs

@@ -1,4 +1,6 @@
-use crate::ui;
+use crate::{netplay, ui};
+use std::io::Read;
+use std::io::Write;
 
 #[derive(PartialEq)]
 pub enum SaveTypes {
@@ -7,6 +9,7 @@ pub enum SaveTypes {
     Sram,
     Flash,
     Mempak,
+    Sdcard,
     Romsave,
 }
 
@@ -15,20 +18,50 @@ pub struct Paths {
     pub sra_file_path: std::path::PathBuf,
     pub fla_file_path: std::path::PathBuf,
     pub pak_file_path: std::path::PathBuf,
+    pub sdcard_file_path: std::path::PathBuf,
     pub romsave_file_path: std::path::PathBuf,
+    pub savestate_file_path: std::path::PathBuf,
 }
 
 // the bool indicates whether the save has been written to
 // if that is the case, it will be flushed to the disk when the program closes
-pub struct Saves {
-    pub eeprom: (Vec<u8>, bool),
-    pub sram: (Vec<u8>, bool),
-    pub flash: (Vec<u8>, bool),
-    pub mempak: (Vec<u8>, bool),
-    pub romsave: (serde_json::Map<String, serde_json::Value>, bool),
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Save {
+    pub data: Vec<u8>,
+    pub written: bool,
 }
 
-pub fn get_save_type(game_id: &str) -> Vec<SaveTypes> {
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct RomSave {
+    pub data: std::collections::HashMap<u32, u8>,
+    pub written: bool,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Saves {
+    pub eeprom: Save,
+    pub sram: Save,
+    pub flash: Save,
+    pub mempak: Save,
+    pub sdcard: Save,
+    pub romsave: RomSave,
+}
+
+fn get_save_type(rom: &[u8], game_id: &str) -> Vec<SaveTypes> {
+    let header_type = std::str::from_utf8(rom[0x3C..0x3E].try_into().unwrap());
+    if header_type.is_ok() && header_type.unwrap() == "ED" {
+        let save_type = rom[0x3F] >> 4;
+        match save_type {
+            0 => return vec![],
+            1 => return vec![SaveTypes::Eeprom4k],
+            2 => return vec![SaveTypes::Eeprom16k],
+            3 => return vec![SaveTypes::Sram],
+            4 => panic!("Unsupported save type: {}", save_type),
+            5 => return vec![SaveTypes::Flash],
+            6 => panic!("Unsupported save type: {}", save_type),
+            _ => panic!("Unknown save type: {}", save_type),
+        }
+    }
     match game_id {
         "NB7" | // Banjo-Tooie [Banjo to Kazooie no Daiboken 2 (J)]
         "NGT" | // City Tour GrandPrix - Zen Nihon GT Senshuken
@@ -86,108 +119,250 @@ pub fn get_save_type(game_id: &str) -> Vec<SaveTypes> {
     }
 }
 
-pub fn init(ui: &mut ui::Ui) {
-    let id = ui.game_id.as_str();
-    ui.save_type = get_save_type(id);
-
-    let base_path = dirs::data_dir().unwrap().join("gopher64").join("saves");
-
-    let result = std::fs::create_dir_all(base_path.clone());
-    if result.is_err() {
-        panic!("could not create save dir")
+pub fn get_game_name(rom: &[u8]) -> String {
+    let mut game_name = "".to_owned();
+    let header_value = std::str::from_utf8(&rom[0x20..0x34]);
+    if header_value.is_ok() {
+        let re = regex::Regex::new(r"[^a-zA-Z0-9_ -]").unwrap();
+        game_name = re
+            .replace_all(header_value.unwrap(), "")
+            .trim()
+            .replace('\0', "");
     }
+    game_name
+}
 
-    ui.paths.eep_file_path.clone_from(&base_path);
+pub fn init(ui: &mut ui::Ui, rom: &[u8]) {
+    ui.save_type = get_save_type(rom, &ui.game_id);
+
+    let saves_path = ui.dirs.data_dir.join("saves");
+
+    let states_path = ui.dirs.data_dir.join("states");
+
+    let game_name = get_game_name(rom);
+
+    let prefix = if game_name.is_empty() {
+        &ui.game_id
+    } else {
+        &game_name
+    };
+
+    ui.paths.eep_file_path.clone_from(&saves_path);
     ui.paths
         .eep_file_path
-        .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".eep");
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".eep");
 
-    ui.paths.sra_file_path.clone_from(&base_path);
+    ui.paths.sra_file_path.clone_from(&saves_path);
     ui.paths
         .sra_file_path
-        .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".sra");
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".sra");
 
-    ui.paths.fla_file_path.clone_from(&base_path);
+    ui.paths.fla_file_path.clone_from(&saves_path);
     ui.paths
         .fla_file_path
-        .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".fla");
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".fla");
 
-    ui.paths.pak_file_path.clone_from(&base_path);
+    ui.paths.pak_file_path.clone_from(&saves_path);
     ui.paths
         .pak_file_path
-        .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".mpk");
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".mpk");
 
-    ui.paths.romsave_file_path.clone_from(&base_path);
+    ui.paths.sdcard_file_path.clone_from(&saves_path);
+    ui.paths
+        .sdcard_file_path
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".img");
+
+    ui.paths.romsave_file_path.clone_from(&saves_path);
     ui.paths
         .romsave_file_path
-        .push(ui.game_id.to_owned() + "-" + &ui.game_hash + ".romsave");
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".romsave");
+
+    ui.paths.savestate_file_path.clone_from(&states_path);
+    ui.paths
+        .savestate_file_path
+        .push(prefix.to_owned() + "-" + &ui.game_hash + ".state");
 }
 
-pub fn load_saves(ui: &mut ui::Ui) {
-    let eep = std::fs::read(&mut ui.paths.eep_file_path);
-    if eep.is_ok() {
-        ui.saves.eeprom.0 = eep.unwrap();
+pub fn load_saves(ui: &mut ui::Ui, netplay: &mut Option<netplay::Netplay>) {
+    if netplay.is_none() || netplay.as_ref().unwrap().player_number == 0 {
+        let eep = std::fs::read(&mut ui.paths.eep_file_path);
+        if eep.is_ok() {
+            ui.saves.eeprom.data = eep.unwrap();
+        }
+        let sra = std::fs::read(&mut ui.paths.sra_file_path);
+        if sra.is_ok() {
+            ui.saves.sram.data = sra.unwrap();
+        }
+        let fla = std::fs::read(&mut ui.paths.fla_file_path);
+        if fla.is_ok() {
+            ui.saves.flash.data = fla.unwrap();
+        }
+        let mempak = std::fs::read(&mut ui.paths.pak_file_path);
+        if mempak.is_ok() {
+            ui.saves.mempak.data = mempak.unwrap();
+        }
+        let sdcard = std::fs::read(&mut ui.paths.sdcard_file_path);
+        if sdcard.is_ok() {
+            ui.saves.sdcard.data = sdcard.unwrap();
+        }
+        let romsave = std::fs::read(&mut ui.paths.romsave_file_path);
+        if romsave.is_ok() {
+            ui.saves.romsave.data = postcard::from_bytes(romsave.unwrap().as_ref()).unwrap();
+        }
     }
-    let sra = std::fs::read(&mut ui.paths.sra_file_path);
-    if sra.is_ok() {
-        ui.saves.sram.0 = sra.unwrap();
-    }
-    let fla = std::fs::read(&mut ui.paths.fla_file_path);
-    if fla.is_ok() {
-        ui.saves.flash.0 = fla.unwrap();
-    }
-    let mempak = std::fs::read(&mut ui.paths.pak_file_path);
-    if mempak.is_ok() {
-        ui.saves.mempak.0 = mempak.unwrap();
-    }
-    let romsave = std::fs::read(&mut ui.paths.romsave_file_path);
-    if romsave.is_ok() {
-        ui.saves.romsave.0 = serde_json::from_slice(romsave.unwrap().as_ref()).unwrap();
+
+    if netplay.is_some() {
+        if netplay.as_ref().unwrap().player_number == 0 {
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "eep",
+                &ui.saves.eeprom.data,
+                ui.saves.eeprom.data.len(),
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "sra",
+                &ui.saves.sram.data,
+                ui.saves.sram.data.len(),
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "fla",
+                &ui.saves.flash.data,
+                ui.saves.flash.data.len(),
+            );
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "mpk",
+                &ui.saves.mempak.data,
+                ui.saves.mempak.data.len(),
+            );
+
+            let mut compressed_sd = Vec::new();
+            if !ui.saves.sdcard.data.is_empty() {
+                compressed_sd = compress_file(&[(&ui.saves.sdcard.data, "save")]);
+            }
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "img",
+                &compressed_sd,
+                compressed_sd.len(),
+            );
+
+            let mut compressed_romsave = Vec::new();
+            if !ui.saves.romsave.data.is_empty() {
+                compressed_romsave = compress_file(&[(
+                    &postcard::to_stdvec(&ui.saves.romsave.data).unwrap(),
+                    "save",
+                )]);
+            }
+            netplay::send_save(
+                netplay.as_mut().unwrap(),
+                "rom",
+                &compressed_romsave,
+                compressed_romsave.len(),
+            );
+        } else {
+            netplay::receive_save(netplay.as_mut().unwrap(), "eep", &mut ui.saves.eeprom.data);
+            netplay::receive_save(netplay.as_mut().unwrap(), "sra", &mut ui.saves.sram.data);
+            netplay::receive_save(netplay.as_mut().unwrap(), "fla", &mut ui.saves.flash.data);
+            netplay::receive_save(netplay.as_mut().unwrap(), "mpk", &mut ui.saves.mempak.data);
+
+            let mut compressed_sd = Vec::new();
+            netplay::receive_save(netplay.as_mut().unwrap(), "img", &mut compressed_sd);
+            if !compressed_sd.is_empty() {
+                ui.saves.sdcard.data = decompress_file(&compressed_sd, "save");
+            }
+
+            let mut compressed_romsave = Vec::new();
+            netplay::receive_save(netplay.as_mut().unwrap(), "rom", &mut compressed_romsave);
+            if !compressed_romsave.is_empty() {
+                let romsave_bytes = decompress_file(&compressed_romsave, "save");
+                ui.saves.romsave.data = postcard::from_bytes(&romsave_bytes).unwrap();
+            }
+        }
     }
 }
 
-pub fn write_rom_save(ui: &ui::Ui) {
-    let f = std::fs::File::create(ui.paths.romsave_file_path.clone()).unwrap();
-    serde_json::to_writer(f, &ui.saves.romsave).unwrap();
+pub fn decompress_file(input: &[u8], name: &str) -> Vec<u8> {
+    let mut decompressed_file = Vec::new();
+    {
+        let mut reader = zip::ZipArchive::new(std::io::Cursor::new(input)).unwrap();
+        let mut file = reader.by_name(name).unwrap();
+        file.read_to_end(&mut decompressed_file).unwrap();
+    }
+    decompressed_file
 }
 
-pub fn write_saves(ui: &ui::Ui) {
-    if ui.saves.eeprom.1 {
-        write_save(ui, SaveTypes::Eeprom16k)
+pub fn compress_file(data: &[(&[u8], &str)]) -> Vec<u8> {
+    let mut compressed_file = Vec::new();
+    {
+        let mut writer = zip::ZipWriter::new(std::io::Cursor::new(&mut compressed_file));
+        for item in data {
+            writer
+                .start_file(
+                    item.1,
+                    zip::write::SimpleFileOptions::default()
+                        .compression_method(zip::CompressionMethod::Zstd),
+                )
+                .unwrap();
+            writer.write_all(item.0).unwrap();
+        }
     }
-    if ui.saves.sram.1 {
-        write_save(ui, SaveTypes::Sram)
-    }
-    if ui.saves.flash.1 {
-        write_save(ui, SaveTypes::Flash)
-    }
-    if ui.saves.mempak.1 {
-        write_save(ui, SaveTypes::Mempak)
-    }
-    if ui.saves.romsave.1 {
-        write_save(ui, SaveTypes::Romsave)
+    compressed_file
+}
+
+fn write_rom_save(ui: &ui::Ui) {
+    let data = postcard::to_stdvec(&ui.saves.romsave.data).unwrap();
+    std::fs::write(ui.paths.romsave_file_path.clone(), data).unwrap();
+}
+
+pub fn write_saves(ui: &ui::Ui, netplay: &Option<netplay::Netplay>) {
+    if netplay.is_none() || netplay.as_ref().unwrap().player_number == 0 {
+        if ui.saves.eeprom.written {
+            write_save(ui, SaveTypes::Eeprom16k)
+        }
+        if ui.saves.sram.written {
+            write_save(ui, SaveTypes::Sram)
+        }
+        if ui.saves.flash.written {
+            write_save(ui, SaveTypes::Flash)
+        }
+        if ui.saves.mempak.written {
+            write_save(ui, SaveTypes::Mempak)
+        }
+        if ui.saves.sdcard.written {
+            write_save(ui, SaveTypes::Sdcard)
+        }
+        if ui.saves.romsave.written {
+            write_save(ui, SaveTypes::Romsave)
+        }
     }
 }
 
-pub fn write_save(ui: &ui::Ui, save_type: SaveTypes) {
+fn write_save(ui: &ui::Ui, save_type: SaveTypes) {
     let path: &std::path::Path;
     let data: &Vec<u8>;
     match save_type {
         SaveTypes::Eeprom4k | SaveTypes::Eeprom16k => {
             path = ui.paths.eep_file_path.as_ref();
-            data = ui.saves.eeprom.0.as_ref();
+            data = ui.saves.eeprom.data.as_ref();
         }
         SaveTypes::Sram => {
             path = ui.paths.sra_file_path.as_ref();
-            data = ui.saves.sram.0.as_ref();
+            data = ui.saves.sram.data.as_ref();
         }
         SaveTypes::Flash => {
             path = ui.paths.fla_file_path.as_ref();
-            data = ui.saves.flash.0.as_ref();
+            data = ui.saves.flash.data.as_ref();
         }
         SaveTypes::Mempak => {
             path = ui.paths.pak_file_path.as_ref();
-            data = ui.saves.mempak.0.as_ref();
+            data = ui.saves.mempak.data.as_ref();
+        }
+        SaveTypes::Sdcard => {
+            path = ui.paths.sdcard_file_path.as_ref();
+            data = ui.saves.sdcard.data.as_ref();
         }
         SaveTypes::Romsave => {
             write_rom_save(ui);

src/ui/video.rs

@@ -1,82 +1,109 @@
-use crate::device;
+#![allow(non_snake_case)]
+include!(concat!(env!("OUT_DIR"), "/parallel_bindings.rs"));
+use crate::{device, ui};
 
-#[repr(C)]
-pub struct GfxInfo {
-    pub rdram: *mut u8,
-    pub dmem: *mut u8,
-    pub rdram_size: u32,
-    pub dpc_current_reg: *mut u32,
-    pub dpc_start_reg: *mut u32,
-    pub dpc_end_reg: *mut u32,
-    pub dpc_status_reg: *mut u32,
-    pub vi_h_start_reg: *mut u32,
-    pub vi_v_start_reg: *mut u32,
-    pub vi_x_scale_reg: *mut u32,
-    pub vi_y_scale_reg: *mut u32,
-    pub vi_width_reg: *mut u32,
-}
+pub fn init(device: &mut device::Device) {
+    ui::sdl_init(sdl3_sys::init::SDL_INIT_VIDEO);
 
-unsafe extern "C" {
-    pub fn rdp_init(window: usize, gfx_info: GfxInfo, fullscreen: bool);
-    pub fn rdp_close();
-    pub fn rdp_update_screen() -> bool;
-    pub fn rdp_set_vi_register(reg: u32, value: u32);
-    pub fn rdp_process_commands() -> u64;
-    pub fn rdp_full_sync();
-}
+    let title = std::ffi::CString::new("gopher64").unwrap();
 
-pub fn init(device: &mut device::Device, fullscreen: bool) {
-    let mut builder = device
-        .ui
-        .video_subsystem
-        .as_ref()
-        .unwrap()
-        .window("gopher64", 640, 480);
+    let mut flags = sdl3_sys::video::SDL_WINDOW_VULKAN;
 
-    builder.position_centered().vulkan();
-
-    if fullscreen {
-        builder.fullscreen_desktop();
+    if device.ui.fullscreen {
+        flags |= sdl3_sys::video::SDL_WINDOW_FULLSCREEN;
     } else {
-        builder.resizable();
+        flags |= sdl3_sys::video::SDL_WINDOW_RESIZABLE;
     }
-    device.ui.window = Some(builder.build().unwrap());
+    flags |= sdl3_sys::video::SDL_WINDOW_INPUT_FOCUS;
 
-    let gfx_info = GfxInfo {
-        rdram: device.rdram.mem.as_mut_ptr(),
-        dmem: device.rsp.mem.as_mut_ptr(),
-        rdram_size: device.rdram.size,
-        dpc_current_reg: &mut device.rdp.regs_dpc[device::rdp::DPC_CURRENT_REG as usize],
-        dpc_start_reg: &mut device.rdp.regs_dpc[device::rdp::DPC_START_REG as usize],
-        dpc_end_reg: &mut device.rdp.regs_dpc[device::rdp::DPC_END_REG as usize],
-        dpc_status_reg: &mut device.rdp.regs_dpc[device::rdp::DPC_STATUS_REG as usize],
-        vi_h_start_reg: &mut device.vi.regs[device::vi::VI_H_START_REG as usize],
-        vi_v_start_reg: &mut device.vi.regs[device::vi::VI_V_START_REG as usize],
-        vi_x_scale_reg: &mut device.vi.regs[device::vi::VI_X_SCALE_REG as usize],
-        vi_y_scale_reg: &mut device.vi.regs[device::vi::VI_Y_SCALE_REG as usize],
-        vi_width_reg: &mut device.vi.regs[device::vi::VI_WIDTH_REG as usize],
+    let mut window_width = 640;
+    let mut window_height = 480;
+    if device.cart.pal {
+        window_width = 768;
+        window_height = 576;
+    }
+    device.ui.window = unsafe {
+        sdl3_sys::video::SDL_CreateWindow(title.as_ptr(), window_width, window_height, flags)
+    };
+    if device.ui.window.is_null() {
+        panic!("Could not create window");
+    }
+    if !unsafe { sdl3_sys::video::SDL_ShowWindow(device.ui.window) } {
+        panic!("Could not show window");
+    }
+    unsafe { sdl3_sys::everything::SDL_HideCursor() };
+
+    let gfx_info = GFX_INFO {
+        RDRAM: device.rdram.mem.as_mut_ptr(),
+        DMEM: device.rsp.mem.as_mut_ptr(),
+        RDRAM_SIZE: device.rdram.size,
+        DPC_CURRENT_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_CURRENT_REG as usize],
+        DPC_START_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_START_REG as usize],
+        DPC_END_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_END_REG as usize],
+        DPC_STATUS_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_STATUS_REG as usize],
+        PAL: device.cart.pal,
     };
 
     unsafe {
         rdp_init(
-            device.ui.window.as_mut().unwrap().raw() as usize,
+            device.ui.window as *mut std::ffi::c_void,
             gfx_info,
-            fullscreen,
+            device.ui.config.video.upscale,
+            device.ui.config.video.integer_scaling,
+            device.ui.fullscreen,
         )
     }
 }
 
-pub fn close() {
+pub fn close(ui: &ui::Ui) {
     unsafe {
         rdp_close();
+        sdl3_sys::video::SDL_DestroyWindow(ui.window);
     }
 }
 
-pub fn update_screen() -> bool {
+pub fn update_screen() {
     // when the window is closed, running is set to false
     unsafe { rdp_update_screen() }
 }
 
+pub fn check_framebuffers(address: u32) {
+    unsafe { rdp_check_framebuffers(address) }
+}
+
+pub fn full_sync() {
+    unsafe { rdp_full_sync() }
+}
+
+pub fn load_state(device: &mut device::Device) {
+    let gfx_info = GFX_INFO {
+        RDRAM: device.rdram.mem.as_mut_ptr(),
+        DMEM: device.rsp.mem.as_mut_ptr(),
+        RDRAM_SIZE: device.rdram.size,
+        DPC_CURRENT_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_CURRENT_REG as usize],
+        DPC_START_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_START_REG as usize],
+        DPC_END_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_END_REG as usize],
+        DPC_STATUS_REG: &mut device.rdp.regs_dpc[device::rdp::DPC_STATUS_REG as usize],
+        PAL: device.cart.pal,
+    };
+    unsafe {
+        rdp_new_processor(gfx_info, device.ui.config.video.upscale);
+    }
+}
+
+pub fn check_callback(device: &mut device::Device) {
+    let callback = unsafe { rdp_check_callback() };
+    device.cpu.running = callback.emu_running;
+    if device.netplay.is_none() {
+        if callback.save_state {
+            device.save_state = true;
+        } else if callback.load_state {
+            device.load_state = true;
+        }
+        device.vi.enable_speed_limiter = callback.enable_speedlimiter;
+    }
+}
+
 pub fn set_register(reg: u32, value: u32) {
     unsafe {
         rdp_set_vi_register(reg, value);
@@ -87,25 +114,23 @@ pub fn process_rdp_list() -> u64 {
     unsafe { rdp_process_commands() }
 }
 
-pub fn full_sync() {
-    unsafe {
-        rdp_full_sync();
-    }
-}
-
-pub fn draw_text(
-    text: &str,
-    canvas: &mut sdl2::render::Canvas<sdl2::video::Window>,
-    font: &rusttype::Font,
-) {
+pub fn draw_text(text: &str, renderer: *mut sdl3_sys::render::SDL_Renderer, font: &rusttype::Font) {
     let text_size = 32;
     let scale = rusttype::Scale::uniform(text_size as f32);
     let v_metrics = font.v_metrics(scale);
     let offset = rusttype::point(10.0, 10.0 + v_metrics.ascent);
 
     // Clear the canvas
-    canvas.set_draw_color(sdl2::pixels::Color::RGB(0, 0, 0));
-    canvas.clear();
+    unsafe {
+        sdl3_sys::render::SDL_SetRenderDrawColor(
+            renderer,
+            0,
+            0,
+            0,
+            sdl3_sys::pixels::SDL_ALPHA_OPAQUE,
+        );
+        sdl3_sys::render::SDL_RenderClear(renderer);
+    };
 
     for glyph in font.layout(text, scale, offset) {
         if let Some(bb) = glyph.pixel_bounding_box() {
@@ -113,15 +138,23 @@ pub fn draw_text(
                 let x = x as i32 + bb.min.x;
                 let y = y as i32 + bb.min.y + (240 - text_size);
                 if v > 0.5 {
-                    canvas.set_draw_color(sdl2::pixels::Color::RGB(255, 255, 255));
-                    canvas
-                        .draw_point(sdl2::rect::Point::new(x, y))
-                        .expect("Error drawing pixel");
+                    unsafe {
+                        sdl3_sys::render::SDL_SetRenderDrawColor(
+                            renderer,
+                            255,
+                            255,
+                            255,
+                            sdl3_sys::pixels::SDL_ALPHA_OPAQUE,
+                        );
+                        sdl3_sys::render::SDL_RenderPoint(renderer, x as f32, y as f32);
+                    };
                 }
             });
         }
     }
 
     // Present the canvas
-    canvas.present();
+    if !unsafe { sdl3_sys::render::SDL_RenderPresent(renderer) } {
+        panic!("Could not present renderer");
+    }
 }

src/ui/vru.rs

@@ -0,0 +1,28 @@
+use eframe::egui;
+
+use crate::ui;
+
+pub fn prompt_for_match(
+    words: &[String],
+    window_notifier: &tokio::sync::mpsc::Sender<Vec<String>>,
+    word_index_receiver: &mut tokio::sync::mpsc::Receiver<String>,
+    gui_ctx: &egui::Context,
+) -> u16 {
+    let mut dedup_words = words.to_owned();
+    dedup_words.sort();
+    dedup_words.dedup();
+    window_notifier.try_send(dedup_words).unwrap();
+    gui_ctx.request_repaint(); // this is so the window pops up right away
+    let mut result = word_index_receiver.try_recv();
+    while result.is_err() {
+        result = word_index_receiver.try_recv();
+        std::thread::sleep(std::time::Duration::from_secs_f64(1.0 / 60.0));
+        ui::video::update_screen(); // so the OS doesn't complain about the game window being frozen
+    }
+    for (i, v) in words.iter().enumerate() {
+        if *v == *result.as_ref().unwrap() {
+            return i as u16;
+        }
+    }
+    0x7FFF
+}