diff options
| author | Samuel Perrouault <samuel.perrouault@gmail.com> | 2025-03-26 14:56:05 +0100 |
|---|---|---|
| committer | Samuel Perrouault <samuel.perrouault@gmail.com> | 2025-03-26 14:56:05 +0100 |
| commit | 9771a7cbf9bebf4585dc8a3317c8722e7daf0b22 (patch) | |
| tree | d97634b9247e5a5fe386924db08cb93535e888df /src/chip8.rs | |
| parent | b8c3b7982ddc8ba6c5067e4ec17e67b11db4ca83 (diff) | |
implement SUB Vx, Vy
Diffstat (limited to 'src/chip8.rs')
| -rw-r--r-- | src/chip8.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/chip8.rs b/src/chip8.rs index 248c302..a172fa6 100644 --- a/src/chip8.rs +++ b/src/chip8.rs @@ -130,6 +130,11 @@ impl Chip8 { self.v[0xF] = if v > 255 { 1 } else { 0 }; self.v[x] = v as u8; } + 0x0005 => { + eprintln!("SUB V{}, V{}", x, y); + self.v[0xF] = if self.v[x] > self.v[y] { 1 } else { 0 }; + self.v[x] = self.v[x].wrapping_sub(self.v[y]); + } _ => unknown_opcode(opcode), }, 0x9000 => { |