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Diffstat (limited to 'src/emu/cpu/i4004/i4004.c')
-rw-r--r--src/emu/cpu/i4004/i4004.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/emu/cpu/i4004/i4004.c b/src/emu/cpu/i4004/i4004.c
index f894fd4cebd..ed88991b53b 100644
--- a/src/emu/cpu/i4004/i4004.c
+++ b/src/emu/cpu/i4004/i4004.c
@@ -395,7 +395,7 @@ static void execute_one(i4004_state *cpustate, int opcode)
cpustate->C = 0;
break;
case 0xf2: /* IAC */
- cpustate->A = cpustate->A++;
+ cpustate->A += 1;
cpustate->C = cpustate->A >> 4;
cpustate->A &= 0x0f;
break;