void RastanYM2151IRQHandler(int irq )
{
if (irq)
{
ZetRaiseIrq(0);
}
}
void twinhawkYM2151IRQHandler(int irq )
{
if (irq)
{
ZetRaiseIrq(1);
}
else
{
ZetLowerIrq();
}
}
static int DrvFrame()
{
if (DrvReset) {
DrvDoReset();
}
ZetOpen(0);
ZetRun(4000000 / 60);
ZetRaiseIrq(0);
ZetClose();
if (pBurnDraw) {
DrvDraw();
}
return 0;
}
int QsndSectRun(int nStart,int nEnd)
{
int nTo;
// See if an irq occurs before the end
while (nStart+nIrqNext<nEnd)
{
nTo=nStart+nIrqNext;
SectRun(nStart,nTo);
ZetRaiseIrq(0xff);
ZetRun(0);
ZetLowerIrq();
nIrqNext=nIrqPeriod; // Next irq happens after period
nStart=nTo; // Done this part now
}
nTo=nEnd;
SectRun(nStart,nTo);
nIrqNext-=nTo-nStart; // Next irq happens sooner
return 0;
}
void __fastcall battlegWriteByte(UINT32 sekAddress, UINT8 byteValue)
{
switch (sekAddress) {
case 0x218021: // The 68K has access to the Z80 RAM
RamZ80[0x10] = byteValue; // Only these addresses are used, however
break;
case 0x21C01D: // Coin control
break;
case 0x600001:
nSoundCommand = byteValue;
// Trigger Z80 interrupt, and allow the Z80 to process it
ZetRaiseIrq(255);
nCyclesDone[1] += ZetRun(0x0200);
break;
// default:
// printf("Attempt to write byte value %x to location %x\n", byteValue, sekAddress);
}
}
