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irem m72 improvement WIP(!)

This commit is contained in:
dinkc64 2014-12-02 07:46:31 +00:00
parent 0bb7c24b40
commit 4b3d5e8e30
1 changed files with 29 additions and 21 deletions
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50
src/burn/drv/irem/d_m72.cpp
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@ -61,7 +61,6 @@ static UINT8 DrvDips[2];
static UINT8 DrvInputs[5];
static UINT8 DrvReset;
const static INT32 nInterleave = 284;
static INT32 nCurrentCycles;
static INT32 nCyclesDone[2];
static INT32 nCyclesTotal[2];
@ -1263,8 +1262,8 @@ static void m72YM2151IRQHandler(INT32 nStatus)
}
static INT32 m72SyncDAC()
{ // Note: the FPS is 55, but when calculating the sync, we use 2 less FPS - this gets rid of clicks in the sample output. -dink dec. 1, 2014
return (INT32)(float)(nBurnSoundLen * (ZetTotalCycles() / (3579545.000 / 53/*(nBurnFPS / 100.000)*/)));
{ // Note: the FPS is 55, but when calculating the sync, we use 4 less FPS - this gets rid of clicks in the sample output. -dink dec. 2, 2014
return (INT32)(float)(nBurnSoundLen * (ZetTotalCycles() / (3579545.000 / 51/*(nBurnFPS / 100.000)*/)));
}
static INT32 DrvDoReset()
@ -2063,7 +2062,7 @@ static void scanline_interrupts(INT32 scanline)
else
VezSetIRQLineAndVector(0, (m72_irq_base + 8)/4, VEZ_IRQSTATUS_AUTO);
}
else if (scanline == 256) // vblank
else if (scanline == 248) // vblank
{
if (nPreviousLine < nScreenHeight) {
dodrawline(nPreviousLine, nScreenHeight);
@ -2091,6 +2090,9 @@ static INT32 DrvFrame()
compile_inputs();
INT32 multiplier=3;
INT32 nInterleave = 256 * multiplier;
if (Clock_16mhz) // Ken-go, Cosmic Cop
nCyclesTotal[0] = (INT32)((INT64)(16000000 / 55) * nBurnCPUSpeedAdjust / 0x0100);
else
@ -2101,27 +2103,28 @@ static INT32 DrvFrame()
VezOpen(0);
ZetOpen(0);
// memset (pBurnSoundOut, 0, nBurnSoundLen * 2 * sizeof(INT16));
for (INT32 i = 0; i < nInterleave; i++)
{
nCurrentCycles = ((nCyclesTotal[0] / nInterleave) * 1) / 8; // scanline is 87.5% of scanline time
for (INT32 j = 0; j < 7; j++) { // increase cpu sync
nCyclesDone[0] += VezRun(nCurrentCycles);
}
scanline_interrupts(i); // run at hblank?
nCurrentCycles = ((nCyclesTotal[0] / nInterleave) * 1) / 8; // horizontal blank is 12.5% of scanline
nCurrentCycles = nCyclesTotal[0] / nInterleave; //((nCyclesTotal[0] / nInterleave) * 1) / 8; // scanline is 87.5% of scanline time
//for (INT32 j = 0; j < 7; j++) { // increase cpu sync
// nCyclesDone[0] += VezRun(nCurrentCycles);
//}
nCyclesDone[0] += VezRun(nCurrentCycles);
if ((i%multiplier)==(multiplier-1))
scanline_interrupts(i/multiplier); // update at hblank?
//scanline_interrupts(i); // run at hblank?
// nCurrentCycles = ((nCyclesTotal[0] / nInterleave) * 1) / 8; // horizontal blank is 12.5% of scanline
// nCyclesDone[0] += VezRun(nCurrentCycles);
// vertical lines are ~90% of video time, vblank is ~10%
if (z80_reset == 0) {
nCyclesDone[1] += ZetRun(nCyclesTotal[1] / nInterleave);
if (i & 1) {
if (i%multiplier==0 && i/multiplier & 1) {
if (z80_nmi_enable == Z80_FAKE_NMI) {
if (DrvSndROM[sample_address]) {
DACSignedWrite(0, DrvSndROM[sample_address]);
@ -2135,11 +2138,16 @@ static INT32 DrvFrame()
ZetIdle(nCyclesTotal[1] / nInterleave);
}
if (pBurnSoundOut) {
INT32 nSegmentLength = nBurnSoundLen / nInterleave;
INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
BurnYM2151Render(pSoundBuf, nSegmentLength);
nSoundBufferPos += nSegmentLength;
if ((i%multiplier)==(multiplier-1)) {
if (pBurnSoundOut) {
INT32 nSegmentLength = nBurnSoundLen / (nInterleave / multiplier);
INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
BurnYM2151Render(pSoundBuf, nSegmentLength);
//iremga20_update(0, pSoundBuf, nSegmentLength);
nSoundBufferPos += nSegmentLength;
}
}
}