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Fix Terra Cresta music

This commit is contained in:
dinkc64 2015-01-05 23:13:07 +00:00
parent dff114e7d5
commit e43d6981d6
1 changed files with 9 additions and 20 deletions
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29
src/burn/drv/pre90s/d_terracre.cpp
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@ -1080,8 +1080,8 @@ static INT32 DrvInit()
DACInit(0, 0, 1, TerracreSyncDAC);
DACInit(1, 0, 1, TerracreSyncDAC);
DACSetRoute(0, 0.50, BURN_SND_ROUTE_BOTH);
DACSetRoute(1, 0.50, BURN_SND_ROUTE_BOTH);
DACSetRoute(0, 0.40, BURN_SND_ROUTE_BOTH);
DACSetRoute(1, 0.40, BURN_SND_ROUTE_BOTH);
GenericTilesInit();
@ -1707,18 +1707,12 @@ static INT32 DrvFrame()
{
INT32 nCyclesTotal[2] = { 8000000 / 60, 4000000 / 60 };
INT32 nCyclesDone[2] = { 0, 0 };
INT32 nInterleave = 100;
INT32 nInterleave = 17*8; // 136
if (DrvReset) DrvDoReset();
DrvMakeInputs();
INT32 Z80IRQSlice[9];
for (INT32 i = 0; i < 9; i++) {
Z80IRQSlice[i] = (INT32)((double)((nInterleave * (i + 1)) / 10));
}
SekNewFrame();
ZetNewFrame();
@ -1736,19 +1730,14 @@ static INT32 DrvFrame()
nCurrentCPU = 1;
ZetOpen(0);
if (DrvUseYM2203) {
#if 0
// The sound cpu fails to read the latches if we run this here
BurnTimerUpdate(i * (nCyclesTotal[nCurrentCPU] / nInterleave));
#endif
BurnTimerUpdate((i + 1) * (nCyclesTotal[nCurrentCPU] / nInterleave));
} else {
BurnTimerUpdateYM3526(i * (nCyclesTotal[nCurrentCPU] / nInterleave));
BurnTimerUpdateYM3526((i + 1) * (nCyclesTotal[nCurrentCPU] / nInterleave));
}
for (INT32 j = 0; j < 9; j++) {
if (i == Z80IRQSlice[j]) {
ZetSetIRQLine(0, ZET_IRQSTATUS_ACK);
nCyclesDone[1] += ZetRun(4000);
ZetSetIRQLine(0, ZET_IRQSTATUS_NONE);
}
{ // 136 times per frame.
ZetSetIRQLine(0, ZET_IRQSTATUS_ACK);
nCyclesDone[1] += ZetRun(100);
ZetSetIRQLine(0, ZET_IRQSTATUS_NONE);
}
ZetClose();
}