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-rw-r--r--sys/src/games/gb/apu.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/src/games/gb/apu.c b/sys/src/games/gb/apu.c
index 900f7e793..e0862ebdf 100644
--- a/sys/src/games/gb/apu.c
+++ b/sys/src/games/gb/apu.c
@@ -115,13 +115,13 @@ filter(int t)
if(i == 2 ? ((reg[NR30] & 0x80) == 0) : ((*sndch[i].env & 0xf8) == 0))
continue;
v = sndch[i].samp * 2 - 15;
- if((cnth & 1<<i) != 0)
- ov0 += v;
if((cnth & 1<<4<<i) != 0)
+ ov0 += v;
+ if((cnth & 1<<i) != 0)
ov1 += v;
}
- ov0 *= 1 + (cntl & 7);
- ov1 *= 1 + (cntl >> 4 & 7);
+ ov0 *= 1 + (cntl >> 4 & 7);
+ ov1 *= 1 + (cntl & 7);
}
static void