int _SPR0chain()
{
tDMA_TAG *pMem;
int partialqwc = 0;
if (spr0ch.qwc == 0) return 0;
pMem = SPRdmaGetAddr(spr0ch.madr, true);
if (pMem == NULL) return -1;
switch (dmacRegs.ctrl.MFD)
{
case MFD_VIF1:
case MFD_GIF:
partialqwc = spr0ch.qwc;
if ((spr0ch.madr & ~dmacRegs.rbsr.RMSK) != dmacRegs.rbor.ADDR)
Console.WriteLn("SPR MFIFO Write outside MFIFO area");
else
mfifotransferred += partialqwc;
hwMFIFOWrite(spr0ch.madr, &psSu128(spr0ch.sadr), partialqwc);
spr0ch.madr += partialqwc << 4;
spr0ch.madr = dmacRegs.rbor.ADDR + (spr0ch.madr & dmacRegs.rbsr.RMSK);
spr0ch.sadr += partialqwc << 4;
spr0ch.qwc -= partialqwc;
break;
case NO_MFD:
case MFD_RESERVED:
//Taking an arbitary small value for games which like to check the QWC/MADR instead of STR, so get most of
//the cycle delay out of the way before the end.
partialqwc = spr0ch.qwc;
memcpy_qwc(pMem, &psSu128(spr0ch.sadr), partialqwc);
// clear VU mem also!
TestClearVUs(spr0ch.madr, partialqwc << 2); // Wtf is going on here? AFAIK, only VIF should affect VU micromem (cottonvibes)
spr0ch.madr += partialqwc << 4;
spr0ch.sadr += partialqwc << 4;
spr0ch.qwc -= partialqwc;
break;
}
return (partialqwc); // bus is 1/2 the ee speed
}
int _SPR0chain()
{
tDMA_TAG *pMem;
int partialqwc = 0;
if (spr0ch.qwc == 0) return 0;
pMem = SPRdmaGetAddr(spr0ch.madr, true);
if (pMem == NULL) return -1;
if(spr0ch.madr >= dmacRegs.rbor.ADDR && spr0ch.madr < (dmacRegs.rbor.ADDR + dmacRegs.rbsr.RMSK + 16))
{
partialqwc = spr0ch.qwc;
if ((spr0ch.madr & ~dmacRegs.rbsr.RMSK) != dmacRegs.rbor.ADDR)
Console.WriteLn("SPR MFIFO Write outside MFIFO area");
else
mfifotransferred += partialqwc;
hwMFIFOWrite(spr0ch.madr, &psSu128(spr0ch.sadr), partialqwc);
spr0ch.madr += partialqwc << 4;
spr0ch.madr = dmacRegs.rbor.ADDR + (spr0ch.madr & dmacRegs.rbsr.RMSK);
spr0ch.sadr += partialqwc << 4;
spr0ch.qwc -= partialqwc;
spr0finished = true;
}
else
{
//Taking an arbitary small value for games which like to check the QWC/MADR instead of STR, so get most of
//the cycle delay out of the way before the end.
partialqwc = spr0ch.qwc;
memcpy_qwc(pMem, &psSu128(spr0ch.sadr), partialqwc);
// clear VU mem also!
TestClearVUs(spr0ch.madr, partialqwc);
spr0ch.madr += partialqwc << 4;
spr0ch.sadr += partialqwc << 4;
spr0ch.qwc -= partialqwc;
}
return (partialqwc); // bus is 1/2 the ee speed
}
void _SPR0interleave()
{
int qwc = spr0ch.qwc;
int sqwc = dmacRegs.sqwc.SQWC;
int tqwc = dmacRegs.sqwc.TQWC;
tDMA_TAG *pMem;
if (tqwc == 0) tqwc = qwc;
//Console.WriteLn("dmaSPR0 interleave");
SPR_LOG("SPR0 interleave size=%d, tqwc=%d, sqwc=%d, addr=%lx sadr=%lx",
spr0ch.qwc, tqwc, sqwc, spr0ch.madr, spr0ch.sadr);
CPU_INT(DMAC_FROM_SPR, qwc * BIAS);
while (qwc > 0)
{
spr0ch.qwc = std::min(tqwc, qwc);
qwc -= spr0ch.qwc;
pMem = SPRdmaGetAddr(spr0ch.madr, true);
switch (dmacRegs.ctrl.MFD)
{
case MFD_VIF1:
case MFD_GIF:
hwMFIFOWrite(spr0ch.madr, &psSu128(spr0ch.sadr), spr0ch.qwc);
mfifotransferred += spr0ch.qwc;
break;
case NO_MFD:
case MFD_RESERVED:
// clear VU mem also!
TestClearVUs(spr0ch.madr, spr0ch.qwc);
memcpy_qwc(pMem, &psSu128(spr0ch.sadr), spr0ch.qwc);
break;
}
spr0ch.sadr += spr0ch.qwc * 16;
spr0ch.madr += (sqwc + spr0ch.qwc) * 16;
}
spr0ch.qwc = 0;
}