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games/gb: fix mbc5 register addressing (fixes warioland3 gamebreaking bug)

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This commit is contained in:
aiju 2018-06-13 09:26:55 +00:00
parent 8fdd633d57
commit 5d202d3456
1 changed files with 5 additions and 5 deletions
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10
sys/src/games/gb/mem.c
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@ -431,11 +431,11 @@ mbc5(int a, int v)
default:
nope(a);
}
switch(a >> 13){
case 0: ramen = (v & 0xf) == 0xa; break;
case 1: b0 = b0 & 0x100 | v; break;
case 2: b0 = b0 & 0xff | v << 8 & 0x100; break;
case 3: b1 = v & 0xff; b1 %= nbackbank; break;
switch(a >> 12){
case 0: case 1: ramen = (v & 0xf) == 0xa; break;
case 2: b0 = b0 & 0x100 | v; break;
case 3: b0 = b0 & 0xff | v << 8 & 0x100; break;
case 4: b1 = v & 0xff; b1 %= nbackbank; break;
}
b0 %= nrom >> 14;
romb = rom + (b0 << 14);