diff --git a/lwcpu/src/lib.rs b/lwcpu/src/lib.rs
index eafe0d6..8d85fc7 100644
--- a/lwcpu/src/lib.rs
+++ b/lwcpu/src/lib.rs
@@ -2,21 +2,21 @@
 
 use core::ptr::{read_volatile, write_volatile};
 
-pub const BASE_POINTER: u32 = 0x1000_0000;
+pub const BASE_POINTER           : u32 = 0x1000_0000;
 
-pub const NUMBER_DISPLAY_OFFSET: u32 = 0x00;
-pub const RANDOM_NUMBER_OFFSET: u32 = 0x04;
-pub const BUTTONS_OFFSET: u32 = 0x08;
-pub const TEXT_DISPLAY_OFFSET: u32 = 0x0C;
-pub const KEYBOARD_OFFSET: u32 = 0x10;
-pub const SCREEN_OFFSET: u32 = 0x80;
+pub const NUMBER_DISPLAY_OFFSET  : u32 = 0x00;
+pub const RANDOM_NUMBER_OFFSET   : u32 = 0x04;
+pub const BUTTONS_OFFSET         : u32 = 0x08;
+pub const TEXT_DISPLAY_OFFSET    : u32 = 0x0C;
+pub const KEYBOARD_OFFSET        : u32 = 0x10;
+pub const SCREEN_OFFSET          : u32 = 0x80;
 
-pub const NUMBER_DISPLAY_POINTER: *mut u32 = (BASE_POINTER + NUMBER_DISPLAY_OFFSET) as *mut u32;
-pub const RANDOM_NUMBER_POINTER: *mut u32 = (BASE_POINTER + RANDOM_NUMBER_OFFSET) as *mut u32;
-pub const BUTTONS_POINTER: *mut u8 = (BASE_POINTER + BUTTONS_OFFSET) as *mut u8;
-pub const TEXT_DISPLAY_POINTER: *mut u8 = (BASE_POINTER + TEXT_DISPLAY_OFFSET) as *mut u8;
-pub const KEYBOARD_POINTER: *mut u32 = (BASE_POINTER + KEYBOARD_OFFSET) as *mut u32;
-pub const SCREEN_POINTER: *mut u32 = (BASE_POINTER + SCREEN_OFFSET) as *mut u32;
+pub const NUMBER_DISPLAY_POINTER : *mut u32 = (BASE_POINTER + NUMBER_DISPLAY_OFFSET) as *mut u32;
+pub const RANDOM_NUMBER_POINTER  : *mut u32 = (BASE_POINTER + RANDOM_NUMBER_OFFSET)  as *mut u32;
+pub const BUTTONS_POINTER        : *mut u8  = (BASE_POINTER + BUTTONS_OFFSET)        as *mut u8;
+pub const TEXT_DISPLAY_POINTER   : *mut u8  = (BASE_POINTER + TEXT_DISPLAY_OFFSET)   as *mut u8;
+pub const KEYBOARD_POINTER       : *mut u32 = (BASE_POINTER + KEYBOARD_OFFSET)       as *mut u32;
+pub const SCREEN_POINTER         : *mut u32 = (BASE_POINTER + SCREEN_OFFSET)         as *mut u32;
 
 pub struct Screen {}
 impl Screen {
@@ -91,14 +91,14 @@ impl RNG {
 
 pub struct Buttons {}
 impl Buttons {
-    pub const RIGHT_RIGHT: u8 = 0b00000001;
-    pub const RIGHT_DOWN: u8 = 0b00000010;
-    pub const RIGHT_LEFT: u8 = 0b00000100;
-    pub const RIGHT_UP: u8 = 0b00001000;
-    pub const LEFT_RIGHT: u8 = 0b00010000;
-    pub const LEFT_DOWN: u8 = 0b00100000;
-    pub const LEFT_LEFT: u8 = 0b01000000;
-    pub const LEFT_UP: u8 = 0b10000000;
+    pub const RIGHT_RIGHT : u8 = 0b00000001;
+    pub const RIGHT_DOWN  : u8 = 0b00000010;
+    pub const RIGHT_LEFT  : u8 = 0b00000100;
+    pub const RIGHT_UP    : u8 = 0b00001000;
+    pub const LEFT_RIGHT  : u8 = 0b00010000;
+    pub const LEFT_DOWN   : u8 = 0b00100000;
+    pub const LEFT_LEFT   : u8 = 0b01000000;
+    pub const LEFT_UP     : u8 = 0b10000000;
 
     #[inline]
     pub fn read() -> u8 {