remove bit rotation manually

raphamorim · Dec 25, 2024 · 112e462 · 112e462
1 parent baa870e
commit 112e462
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/cpu/misc.rs b/src/cpu/misc.rs
@@ -78,7 +78,8 @@ fn alu_swap(cpu: &mut Cpu, a: u8) -> u8 {
     cpu.registers.flag(C, false);
     cpu.registers.flag(H, false);
     cpu.registers.flag(N, false);
-    (a >> 4) | (a << 4)
+    a.rotate_left(4)
+    // (a >> 4) | (a << 4)
 }
 
 fn alu_sla(cpu: &mut Cpu, a: u8) -> u8 {