use spin sleep for more accurate VI timing (#97)

Updates the requirements on [eframe](https://github.com/emilk/egui) to permit the latest version.
- [Release notes](https://github.com/emilk/egui/releases)
- [Changelog](https://github.com/emilk/egui/blob/master/CHANGELOG.md)
- [Commits](https://github.com/emilk/egui/compare/0.29.0...0.30.0)

---
updated-dependencies:
- dependency-name: eframe
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gopher64"
-version = "0.1.10"
+version = "0.1.12"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -8,17 +8,18 @@ edition = "2021"
 [dependencies]
 dirs = "5.0"
 zip = "2.1"
-governor = "0.7"
+governor = "0.8"
 sevenz-rust = "0.6"
 chrono = "0.4"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-eframe = "0.29"
+eframe = "0.30"
 rfd = "0.15"
 sha2 = "0.10"
 rusttype = "0.9"
 futures = "0.3"
 sdl2-sys = "0.37"
+spin_sleep = "1.3"
 clap = { version = "4.4", features = ["derive"] }
 
 [dependencies.sdl2]

src/device/rsp_interface.rs

@@ -165,11 +165,14 @@ pub fn do_dma(device: &mut device::Device, dma: RspDma) {
         while j < count {
             let mut i = 0;
             while i < length {
-                let data = u32::from_ne_bytes(
-                    device.rdram.mem[dram_addr as usize..dram_addr as usize + 4]
-                        .try_into()
-                        .unwrap(),
-                );
+                let mut data = 0;
+                if dram_addr < device::rdram::RDRAM_SIZE as u32 {
+                    data = u32::from_ne_bytes(
+                        device.rdram.mem[dram_addr as usize..dram_addr as usize + 4]
+                            .try_into()
+                            .unwrap(),
+                    );
+                }
                 if offset != 0 {
                     // imem being updated
                     device.rsp.cpu.instructions[((mem_addr & 0xFFF) / 4) as usize].func =

src/device/sram.rs

@@ -141,7 +141,7 @@ pub fn dma_read_sram(
 
     format_sram(device);
 
-    while i < dram_addr + length {
+    while i < dram_addr + length && i < device::rdram::RDRAM_SIZE as u32 {
         device.ui.saves.sram.0[j as usize] = device.rdram.mem[i as usize ^ device.byte_swap];
         i += 1;
         j += 1;
@@ -191,7 +191,7 @@ pub fn dma_write_sram(
 
     format_sram(device);
 
-    while i < dram_addr + length {
+    while i < dram_addr + length && i < device::rdram::RDRAM_SIZE as u32 {
         device.rdram.mem[i as usize ^ device.byte_swap] = device.ui.saves.sram.0[j as usize];
         i += 1;
         j += 1;

src/device/vi.rs

@@ -163,7 +163,7 @@ pub fn speed_limiter(device: &device::Device) {
     if result.is_err() {
         let outcome = result.unwrap_err();
         let dur = outcome.wait_time_from(governor::clock::DefaultClock::default().now());
-        std::thread::sleep(dur);
+        spin_sleep::sleep(dur);
 
         device.vi.limiter.as_ref().unwrap().check().unwrap();
     }