diff --git a/src/bus.rs b/src/bus.rs
index bf792b2..a9f20f8 100644
--- a/src/bus.rs
+++ b/src/bus.rs
@@ -10,7 +10,7 @@ use super::timer::Timer;
 use super::work_ram::{VariableWorkRam, WorkRam};
 use std::{fs::File, io::Read};
 
-const BOOT_ROM_SIZE: usize = 256;
+const BOOT_ROM_SIZE: usize = 0x100;
 
 #[derive(Debug, Clone)]
 pub struct Bus {
diff --git a/src/high_ram.rs b/src/high_ram.rs
index de6847d..b10e9f9 100644
--- a/src/high_ram.rs
+++ b/src/high_ram.rs
@@ -1,4 +1,4 @@
-const HIGH_RAM_SIZE: usize = 127;
+const HIGH_RAM_SIZE: usize = 0x7F;
 const HIGH_RAM_START_ADDRESS: usize = 0xFF80;
 
 #[derive(Debug, Clone)]
diff --git a/src/lib.rs b/src/lib.rs
index 4f86712..e31cba8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,7 +3,7 @@ pub use instruction::Cycle;
 
 pub const GB_WIDTH: usize = 160;
 pub const GB_HEIGHT: usize = 144;
-pub const LR35902_CLOCK_SPEED: u32 = 4194304; // Hz | 4.194304Mhz
+pub const LR35902_CLOCK_SPEED: u32 = 0x400000; // Hz | 4.194304Mhz
 
 mod bus;
 mod cartridge;
diff --git a/src/timer.rs b/src/timer.rs
index 5d3e298..dac1972 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -1,8 +1,6 @@
 use crate::Cycle;
 use bitfield::bitfield;
 
-// const DIVIDER_REGISTER_HZ: u32 = 16384;
-
 #[derive(Debug, Clone, Copy)]
 pub struct Timer {
     pub control: TimerControl,
diff --git a/src/work_ram.rs b/src/work_ram.rs
index e4307fb..852bbbc 100644
--- a/src/work_ram.rs
+++ b/src/work_ram.rs
@@ -1,4 +1,4 @@
-const WORK_RAM_SIZE: usize = 4096;
+const WORK_RAM_SIZE: usize = 0x1000;
 const VARIABLE_WORK_RAM_SIZE: usize = WORK_RAM_SIZE;
 const WORK_RAM_START_ADDRESS: usize = 0xC000;
 const VARIABLE_WORK_RAM_START_ADDRESS: usize = 0xD000;