implement SHL Vx

1 files changed, 5 insertions, 0 deletions

diff --git a/src/chip8.rs b/src/chip8.rs
index a172fa6..38e4831 100644
--- a/src/chip8.rs
+++ b/src/chip8.rs
@@ -135,6 +135,11 @@ impl Chip8 {
                     self.v[0xF] = if self.v[x] > self.v[y] { 1 } else { 0 };
                     self.v[x] = self.v[x].wrapping_sub(self.v[y]);
                 }
+                0x000E => {
+                    eprintln!("SHL V{}", x);
+                    self.v[0xF] = if (self.v[x] >> 7) & 1 == 1 { 1 } else { 0 };
+                    self.v[x] = self.v[x].wrapping_mul(2);
+                }
                 _ => unknown_opcode(opcode),
             },
             0x9000 => {