diff --git a/Cargo.lock b/Cargo.lock
index 5b6c7ed..10fcdff 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -86,6 +86,17 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "ahash"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "ahash"
 version = "0.8.3"
@@ -595,7 +606,7 @@ checksum = "5ea929ec5819fef373728bb0e55003ce921975039cfec3ca8305bb024e5b7b32"
 dependencies = [
  "bytemuck",
  "directories-next",
- "egui",
+ "egui 0.20.1",
  "egui-winit",
  "egui_glow",
  "glow",
@@ -612,6 +623,15 @@ dependencies = [
  "winit",
 ]
 
+[[package]]
+name = "egui"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b403f29d592b5c2267279bfdf2cd3fe3ba0e7a8738d03203a6f1536e8e9d26bd"
+dependencies = [
+ "epaint 0.14.0",
+]
+
 [[package]]
 name = "egui"
 version = "0.20.1"
@@ -619,8 +639,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "65a5e883a316e53866977450eecfbcac9c48109c2ab3394af29feb83fcde4ea9"
 dependencies = [
  "accesskit",
- "ahash",
- "epaint",
+ "ahash 0.8.3",
+ "epaint 0.20.0",
  "nohash-hasher",
  "ron",
  "serde",
@@ -635,7 +655,7 @@ checksum = "5696bdbe60898b81157f07ae34fe02dbfd522174bd6e620942c269cd7307901f"
 dependencies = [
  "accesskit_winit",
  "arboard",
- "egui",
+ "egui 0.20.1",
  "instant",
  "serde",
  "smithay-clipboard",
@@ -651,7 +671,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d4b5960cb1bae1c403a6c9027a745210a41913433b10c73b6e7d76a1017f8b4"
 dependencies = [
  "bytemuck",
- "egui",
+ "egui 0.20.1",
  "glow",
  "memoffset",
  "tracing",
@@ -659,6 +679,21 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "egui_memory_editor"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae2e73ae4ecc1c03d5166902ff2cabbf76a6ecbc18eaa35a858dbd05ba325412"
+dependencies = [
+ "egui 0.14.2",
+]
+
+[[package]]
+name = "emath"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cca5179aa9d15128cebb79bb56dda73a79cc66b402056ff19a992e54b365e15c"
+
 [[package]]
 name = "emath"
 version = "0.20.0"
@@ -701,6 +736,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "epaint"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "136e7d88da926182bcfdb8217137dd347dfe5dc03b8988eaba3ef8becf83394a"
+dependencies = [
+ "ab_glyph",
+ "ahash 0.7.6",
+ "atomic_refcell",
+ "emath 0.14.0",
+ "ordered-float",
+]
+
 [[package]]
 name = "epaint"
 version = "0.20.0"
@@ -708,11 +756,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de14b65fe5e423e0058f77a8beb2c863b056d0566d6c4ce0d097aa5814cb705a"
 dependencies = [
  "ab_glyph",
- "ahash",
+ "ahash 0.8.3",
  "atomic_refcell",
  "bytemuck",
  "ecolor",
- "emath",
+ "emath 0.20.0",
  "nohash-hasher",
  "parking_lot",
  "serde",
@@ -834,7 +882,8 @@ version = "0.1.0"
 dependencies = [
  "console_error_panic_hook",
  "eframe",
- "egui",
+ "egui 0.20.1",
+ "egui_memory_editor",
  "emu",
  "tracing-subscriber",
  "tracing-wasm",
@@ -1241,6 +1290,15 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_enum"
 version = "0.5.7"
@@ -1323,6 +1381,15 @@ version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6f61fba1741ea2b3d6a1e3178721804bb716a68a6aeba1149b5d52e3d464ea66"
 
+[[package]]
+name = "ordered-float"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7940cf2ca942593318d07fcf2596cdca60a85c9e7fab408a5e21a4f9dcd40d87"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "owned_ttf_parser"
 version = "0.15.0"
diff --git a/emu/src/mem.rs b/emu/src/mem.rs
index 75fcd6d..d3dbad4 100644
--- a/emu/src/mem.rs
+++ b/emu/src/mem.rs
@@ -90,21 +90,27 @@ impl AddressBus for Mem {
     fn copy_from(&mut self, _other: &Self) {
         todo!("copy from");
     }
+    #[inline]
     fn read_byte(&self, _address_space: AddressSpace, address: u32) -> u32 {
         self.read_u8(address)
     }
+    #[inline]
     fn read_word(&self, _address_space: AddressSpace, address: u32) -> u32 {
         self.read_u16(address)
     }
+    #[inline]
     fn read_long(&self, _address_space: AddressSpace, address: u32) -> u32 {
         self.read_u32(address)
     }
+    #[inline]
     fn write_byte(&mut self, _address_space: AddressSpace, address: u32, value: u32) {
         self.write_u8(address, value)
     }
+    #[inline]
     fn write_word(&mut self, _address_space: AddressSpace, address: u32, value: u32) {
         self.write_u16(address, value)
     }
+    #[inline]
     fn write_long(&mut self, _address_space: AddressSpace, address: u32, value: u32) {
         self.write_u32(address, value)
     }