diff --git a/.gitignore b/.gitignore
index 4a77473d4e2bfae5eb94e3479d68b23fb65466ec..be3d44f6d5fe02e8517f34a02305161496d55de9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,5 +5,5 @@ Cargo.lock
 /.idea
 
 /target
-/res/roms
+/res/roms.prop
 /examples/*/target
diff --git a/examples/sdl/src/main.rs b/examples/sdl/src/main.rs
index 6369ac3e53e3c06d773d0cefb739afd6bb186513..50af56f892bf24ea07c23a6463d9d155910c058e 100644
--- a/examples/sdl/src/main.rs
+++ b/examples/sdl/src/main.rs
@@ -80,7 +80,7 @@ fn main() {
 
     let mut game_boy = GameBoy::new();
     game_boy.load_boot_static();
-    game_boy.load_rom_file("../../res/roms/ld_r_r.gb");
+    game_boy.load_rom_file("../../res/roms/firstwhite.gb");
     //game_boy.load_rom_file("../../res/roms/opus5.gb");
 
     let mut counter = 0;
diff --git a/examples/web/index.ts b/examples/web/index.ts
index 076502dfe0c7c53608e38df75c423ac908904c33..68cd9aaa81b17b2aca0436a3fd2d004a8dc778ef 100644
--- a/examples/web/index.ts
+++ b/examples/web/index.ts
@@ -49,7 +49,7 @@ const KEYS: Record<string, number> = {
 };
 
 // @ts-ignore: ts(2580)
-const ROM_PATH = require("../../res/roms/tetris.gb");
+const ROM_PATH = require("../../res/roms/firstwhite.gb");
 
 type State = {
     gameBoy: GameBoy;
diff --git a/res/roms/firstwhite.gb b/res/roms/firstwhite.gb
new file mode 100644
index 0000000000000000000000000000000000000000..6d35132175512a3f349dcb4378cfebad2694af6d
Binary files /dev/null and b/res/roms/firstwhite.gb differ
diff --git a/res/roms/ld_r_r.gb b/res/roms/ld_r_r.gb
new file mode 100644
index 0000000000000000000000000000000000000000..d497bfd1275361bc847fa94dc87b43729f180b5d
Binary files /dev/null and b/res/roms/ld_r_r.gb differ
diff --git a/res/roms/opus5.gb b/res/roms/opus5.gb
new file mode 100644
index 0000000000000000000000000000000000000000..a3b8028a31c98b753f0b03d8b8faa2da4232ef14
Binary files /dev/null and b/res/roms/opus5.gb differ
diff --git a/res/roms/rtc3test.gb b/res/roms/rtc3test.gb
new file mode 100644
index 0000000000000000000000000000000000000000..06836967eb2927b31c99de201a44cfd709380268
Binary files /dev/null and b/res/roms/rtc3test.gb differ
diff --git a/res/roms/special.gb b/res/roms/special.gb
new file mode 100644
index 0000000000000000000000000000000000000000..ad3e9984f967b77b7ffdf768842ce3c04517d059
Binary files /dev/null and b/res/roms/special.gb differ
diff --git a/src/mmu.rs b/src/mmu.rs
index 4eab0ec249be6eca30538348832f7c7b81275e05..0a1be916b6c2d5246d80ae0383075345308913f8 100644
--- a/src/mmu.rs
+++ b/src/mmu.rs
@@ -94,15 +94,16 @@ impl Mmu {
         match addr & 0xf000 {
             // BOOT (256 B) + ROM0 (4 KB/16 KB)
             0x0000 => {
-                println!("Writing to BOOT")
+                self.rom[addr as usize] = value;
+                println!("Writing to BOOT at 0x{:04x}", addr)
             }
             // ROM0 (12 KB/16 KB)
             0x1000 | 0x2000 | 0x3000 => {
-                println!("Writing to ROM 0");
+                println!("Writing to ROM 0 at 0x{:04x}", addr);
             }
             // ROM1 (Unbanked) (16 KB)
             0x4000 | 0x5000 | 0x6000 | 0x7000 => {
-                println!("Writing to ROM 1");
+                println!("Writing to ROM 1 at 0x{:04x}", addr);
             }
             // Graphics: VRAM (8 KB)
             0x8000 | 0x9000 => {