diff options
Diffstat (limited to 'src/memory.rs')
-rw-r--r-- | src/memory.rs | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/src/memory.rs b/src/memory.rs deleted file mode 100644 index 755c4bc..0000000 --- a/src/memory.rs +++ /dev/null @@ -1,62 +0,0 @@ -pub struct Memory { - pub mem: [u8; 65536], - pub pc: u16, -} - -impl Memory { - pub fn new() -> Self { - Self { - mem: [0; 65536], - pc: 0, - } - } - - pub fn load_program(&mut self, bytecode: &[u8]) { - self.mem[..bytecode.len()].copy_from_slice(bytecode) - } - - pub fn read_u8(&self, addr: u16) -> u8 { - self.mem[addr as usize] - } - - pub fn write_u8(&mut self, val: u8, addr: u16) { - self.mem[addr as usize] = val; - } - - pub fn read_u8_next(&mut self) -> u8 { - let byte = self.mem[self.pc as usize]; - self.pc = self.pc.wrapping_add(1); - byte - } - - pub fn read_u16(&self, addr: u16) -> u16 { - let byte_high = self.read_u8(addr); - let byte_low = self.read_u8(addr.wrapping_add(1)); - u16::from_be_bytes([byte_high, byte_low]) - } - - pub fn write_u16(&mut self, val: u16, addr: u16) { - let [byte_high, byte_low] = val.to_be_bytes(); - self.write_u8(byte_high, addr); - self.write_u8(byte_low, addr.wrapping_add(1)); - } - - pub fn read_u16_next(&mut self) -> u16 { - let byte_high = self.read_u8_next(); - let byte_low = self.read_u8_next(); - u16::from_be_bytes([byte_high, byte_low]) - } - - pub fn read_pc(&self) -> u16 { - self.pc - } - - pub fn write_pc(&mut self, val: u16) { - self.pc = val; - } - - pub fn reset(&mut self) { - self.mem.fill(0); - self.pc = 0; - } -} |