diff options
| -rw-r--r-- | sys/src/games/snes/cpu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/src/games/snes/cpu.c b/sys/src/games/snes/cpu.c index c15d26240..f307028c7 100644 --- a/sys/src/games/snes/cpu.c +++ b/sys/src/games/snes/cpu.c @@ -857,7 +857,11 @@ cpustep(void) rY &= 0xff; nzx(rY); return 2; - case 0x89: bit(imm(0)); return 2+cyc; + case 0x89: + rP &= ~FLAGZ; + if((imm(0) & rA) == 0) + rP |= FLAGZ; + return 2+cyc; case 0x8A: setra(rX); return 2+cyc; case 0x8B: push8(rDB >> 16); return 3; case 0x8C: memwx816(abso(0, 0), rY); return 4+cyc; |