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add possibility to close dma controllers;

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remove second dma controller when tandy sound is enabled and machine=vga


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2377
This commit is contained in:
Sebastian Strohhäcker 2005-11-16 20:27:40 +00:00
parent 07be3858f1
commit f22e8d5041
6 changed files with 207 additions and 142 deletions
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8
src/hardware/gus.cpp
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@ -83,8 +83,8 @@ struct GFGus {
} timers[2];
Bit32u rate;
Bit16u portbase;
Bit16u dma1;
Bit16u dma2;
Bit8u dma1;
Bit8u dma2;
Bit16u irq1;
Bit16u irq2;
@ -568,7 +568,7 @@ static void ExecuteGlobRegister(void) {
break;
case 0x41: // Dma control register
myGUS.DMAControl = (Bit8u)(myGUS.gRegData>>8);
DmaChannels[myGUS.dma1]->Register_Callback(
GetDMAChannel(myGUS.dma1)->Register_Callback(
(myGUS.DMAControl & 0x1) ? GUS_DMA_Callback : 0);
break;
case 0x42: // Gravis DRAM DMA address register
@ -597,7 +597,7 @@ static void ExecuteGlobRegister(void) {
break;
case 0x49: // DMA sampling control register
myGUS.SampControl = (Bit8u)(myGUS.gRegData>>8);
DmaChannels[myGUS.dma1]->Register_Callback(
GetDMAChannel(myGUS.dma1)->Register_Callback(
(myGUS.SampControl & 0x1) ? GUS_DMA_Callback : 0);
break;
case 0x4c: // GUS reset register