From b1cd72cfef46f3362b6207e56a5581625c0c3a68 Mon Sep 17 00:00:00 2001
From: aiju <devnull@localhost>
Date: Mon, 17 Mar 2014 14:54:12 +0100
Subject: [PATCH] games/snes: BIT #imm does not set NZ flags

---
 sys/src/games/snes/cpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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;