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Fixed terminal count on auto-init DMA. Fixed sound on All New World of Lemmings when using GUS.

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This commit is contained in:
TomW 2014-08-24 14:08:17 +01:00
commit 4817a53619
2 changed files with 16 additions and 5 deletions
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12
src/sound_gus.c
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@ -374,12 +374,17 @@ gus->curx[gus->voice]=(gus->curx[gus->voice]&0xFFF8000)|((val&0x7F)<<8);
c=0;
while (c<65536)
{
int dma_result;
d = gus->ram[gus->dmaaddr];
if (val & 0x80) d ^= 0x80;
if (dma_channel_write(gus->dma, d) == DMA_NODATA) break;
dma_result = dma_channel_write(gus->dma, d);
if (dma_result == DMA_NODATA)
break;
gus->dmaaddr++;
gus->dmaaddr&=0xFFFFF;
c++;
if (dma_result & DMA_OVER)
break;
}
// printf("GUS->MEM Transferred %i bytes\n",c);
gus->dmactrl=val&~0x40;
@ -391,12 +396,15 @@ gus->curx[gus->voice]=(gus->curx[gus->voice]&0xFFF8000)|((val&0x7F)<<8);
while (c<65536)
{
d = dma_channel_read(gus->dma);
if (d == DMA_NODATA) break;
if (d == DMA_NODATA)
break;
if (val&0x80) d^=0x80;
gus->ram[gus->dmaaddr]=d;
gus->dmaaddr++;
gus->dmaaddr&=0xFFFFF;
c++;
if (d & DMA_OVER)
break;
}
// printf("MEM->GUS Transferred %i bytes\n",c);
gus->dmactrl=val&~0x40;