diff --git a/Cargo.toml b/Cargo.toml
index c434382c..8aa75909 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+sha2 = "0.10"
 sdl2-sys = { git = "https://github.com/Rust-SDL2/rust-sdl2.git" }
 
 [dependencies.sdl2]
diff --git a/src/device.rs b/src/device.rs
index 3ed2e224..c5cf0a69 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -47,6 +47,7 @@ pub struct Device {
     ai: ai::Ai,
     si: si::Si,
     ri: ri::Ri,
+    game: String,
 }
 
 impl Device {
@@ -59,6 +60,7 @@ impl Device {
             byte_swap = 3;
         }
         Device {
+            game: String::new(),
             ui: ui::Ui::new(),
             byte_swap: byte_swap,
             cpu: cpu::Cpu {
diff --git a/src/device/cart_rom.rs b/src/device/cart_rom.rs
index 6d25e925..808f610c 100644
--- a/src/device/cart_rom.rs
+++ b/src/device/cart_rom.rs
@@ -1,6 +1,5 @@
 use crate::device;
-use std::collections::hash_map::DefaultHasher;
-use std::hash::{Hash, Hasher};
+use sha2::{Digest, Sha256};
 
 pub enum CicType {
     CicNus6101,
@@ -95,7 +94,12 @@ pub fn dma_write(device: &mut device::Device, cart_addr: u32, dram_addr: u32, le
 pub fn init(device: &mut device::Device, rom_file: Vec<u8>) {
     device.cart.rom = rom_file;
     set_system_region(device, device.cart.rom[0x3E]);
-    set_cic(device)
+    set_cic(device);
+
+    let data =
+        std::str::from_utf8(&device.cart.rom[0x20 as usize..(0x20 + 0x14) as usize]).unwrap();
+    let hash = calculate_hash(&device.cart.rom);
+    device.game = format!("{}-{}", data.trim(), hash);
 }
 
 pub fn set_system_region(device: &mut device::Device, country: u8) {
@@ -109,28 +113,28 @@ pub fn set_system_region(device: &mut device::Device, country: u8) {
 
 pub fn set_cic(device: &mut device::Device) {
     let hash = calculate_hash(&device.cart.rom[0x40..0x1000]);
-    match hash {
-        0x83a9a60ad75b3ed9 => {
+    match hash.as_str() {
+        "B99F06C4802C2377E31E388435955EF3E99C618A6D55D24699D828EB1075F1EB" => {
             device.cart.cic_type = CicType::CicNus6101;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
         }
-        0x3c1e2f5171ec2b8 => {
+        "61E88238552C356C23D19409FE5570EE6910419586BC6FC740F638F761ADC46E" => {
             device.cart.cic_type = CicType::CicNus6102;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
         }
-        0xdbdb0cb696006257 => {
+        "BF3620D30817007091EBE9BDDD1B88C23B8A0052170B3309CDE5B6B4238E45E7" => {
             device.cart.cic_type = CicType::CicNus6103;
             device.cart.cic_seed = 0x78;
             device.cart.rdram_size_offset = 0x318;
         }
-        0x3d51ac3a48960357 => {
+        "04B7BC6717A9F0EB724CF927E74AD3876C381CBB280D841736FC5E55580B756B" => {
             device.cart.cic_type = CicType::CicNus6105;
             device.cart.cic_seed = 0x91;
             device.cart.rdram_size_offset = 0x3F0;
         }
-        0x90135a02ea97ba9f => {
+        "36ADC40148AF56F0D78CD505EB6A90117D1FD6F11C6309E52ED36BC4C6BA340E" => {
             device.cart.cic_type = CicType::CicNus6106;
             device.cart.cic_seed = 0x85;
             device.cart.rdram_size_offset = 0x318;
@@ -139,13 +143,13 @@ pub fn set_cic(device: &mut device::Device) {
             device.cart.cic_type = CicType::CicNus6102;
             device.cart.cic_seed = 0x3F;
             device.cart.rdram_size_offset = 0x318;
-            println!("unknown IPL3 {:#01x}", hash)
+            println!("unknown IPL3 {}", hash)
         }
     }
 }
 
-fn calculate_hash<T: Hash>(t: &[T]) -> u64 {
-    let mut s = DefaultHasher::new();
-    t.hash(&mut s);
-    s.finish()
+fn calculate_hash(data: &[u8]) -> String {
+    let mut hasher = Sha256::new();
+    hasher.update(data);
+    format!("{:X}", hasher.finalize())
 }
diff --git a/src/device/is_viewer.rs b/src/device/is_viewer.rs
index 8aeba975..6c05766a 100644
--- a/src/device/is_viewer.rs
+++ b/src/device/is_viewer.rs
@@ -1,5 +1,4 @@
 use crate::device;
-use std::str;
 
 pub const IS_VIEWER_MASK: usize = 0xFFFF;
 
@@ -20,9 +19,10 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
     let masked_address = address as usize & IS_VIEWER_MASK;
     if masked_address == 0x14 {
         let length = (value & mask) as u64;
-        let data =
-            str::from_utf8(&device.cart.is_viewer_buffer[0x20 as usize..(0x20 + length) as usize])
-                .unwrap();
+        let data = std::str::from_utf8(
+            &device.cart.is_viewer_buffer[0x20 as usize..(0x20 + length) as usize],
+        )
+        .unwrap();
         print!("{}", data);
     } else {
         let mut data = u32::from_be_bytes(