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Fake soundblaster recording to help some detection routines.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1750
This commit is contained in:
Sjoerd van der Berg 2004-03-31 21:53:24 +00:00
parent 611666165e
commit 111dc4f591
1 changed files with 17 additions and 0 deletions
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17
src/hardware/sblaster.cpp
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@ -238,6 +238,7 @@ static void DSP_DMA_CallBack(DmaChannel * chan, DMAEvent event) {
if (event==DMA_UNMASKED) sb.dma.active=true;
if (sb.mode==MODE_DMA_WAIT && sb.dma.active) {
LOG(LOG_SB,LOG_NORMAL)("DMA Activated,starting output");
// LOG_MSG("DMA Size %x base %x Addr %x",chan->currcnt,chan->pagebase,chan->curraddr);
DSP_ChangeMode(MODE_DMA);
CheckDMAEnd();
return;
@ -638,6 +639,18 @@ static void DSP_E2_DMA_CallBack(DmaChannel * chan, DMAEvent event) {
}
}
static void DSP_ADC_CallBack(DmaChannel * chan, DMAEvent event) {
if (event!=DMA_UNMASKED) return;
Bit8u val=128;
while (sb.dma.left--) {
DmaChannels[sb.hw.dma8]->Write(1,&val);
}
SB_RaiseIRQ(SB_IRQ_8);
DmaChannels[sb.hw.dma8]->Register_Callback(0);
}
Bitu DEBUG_EnableDebugger(void);
static void DSP_DoCommand(void) {
// LOG_MSG("DSP Command %X",sb.dsp.cmd);
switch (sb.dsp.cmd) {
@ -652,6 +665,10 @@ static void DSP_DoCommand(void) {
}
break;
case 0x24: /* Singe Cycle 8-Bit DMA ADC */
sb.dma.left=sb.dma.total=1+sb.dsp.in.data[0]+(sb.dsp.in.data[1] << 8);
LOG(LOG_SB,LOG_ERROR)("DSP:Faked ADC for %d bytes",sb.dma.total);
DmaChannels[sb.hw.dma8]->Register_Callback(DSP_ADC_CallBack);
break;
case 0x14: /* Singe Cycle 8-Bit DMA DAC */
case 0x91: /* Singe Cycle 8-Bit DMA High speed DAC */
DSP_PrepareDMA_Old(DSP_DMA_8,false);