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Add new dma transferend event

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1824
This commit is contained in:
Sjoerd van der Berg 2004-06-10 20:22:31 +00:00
parent c6b9969e8a
commit 08003231f9
1 changed files with 14 additions and 14 deletions
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28
src/hardware/sblaster.cpp
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@ -75,7 +75,7 @@ enum {
struct SB_INFO {
Bit16u freq;
struct {
bool active,stereo,filtered,sign,autoinit;
bool stereo,filtered,sign,autoinit;
bool stereoremain;
DMA_MODES mode;
Bitu previous;
@ -235,19 +235,19 @@ static void DSP_StopDMA(void) {
static void DSP_DMA_CallBack(DmaChannel * chan, DMAEvent event) {
if (event==DMA_REACHED_TC) return;
if (event==DMA_MASKED) sb.dma.active=false;
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;
}
if (sb.mode==MODE_DMA && !sb.dma.active) {
DSP_ChangeMode(MODE_DMA_WAIT);
LOG(LOG_SB,LOG_NORMAL)("DMA deactivated,stopping output");
return;
else if (event==DMA_MASKED) {
if (sb.mode==MODE_DMA) {
DSP_ChangeMode(MODE_DMA_WAIT);
LOG(LOG_SB,LOG_NORMAL)("DMA deactivated,stopping output");
}
} else if (event==DMA_UNMASKED) {
if (sb.mode==MODE_DMA_WAIT) {
DSP_ChangeMode(MODE_DMA);
CheckDMAEnd();
LOG(LOG_SB,LOG_NORMAL)("DMA Activated,starting output");
} else if (event==DMA_TRANSFEREND) {
if (sb.mode==MODE_DMA) sb.mode=MODE_DMA_WAIT;
}
}
}