diff options
Diffstat (limited to 'plugins/dfsound/dma.c')
| -rwxr-xr-x[-rw-r--r--] | plugins/dfsound/dma.c | 244 |
1 files changed, 122 insertions, 122 deletions
diff --git a/plugins/dfsound/dma.c b/plugins/dfsound/dma.c index 62c2288d..15f44b11 100644..100755 --- a/plugins/dfsound/dma.c +++ b/plugins/dfsound/dma.c @@ -1,122 +1,122 @@ -/***************************************************************************
- dma.c - description
- -------------------
- begin : Wed May 15 2002
- copyright : (C) 2002 by Pete Bernert
- email : BlackDove@addcom.de
- ***************************************************************************/
-/***************************************************************************
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. See also the license.txt file for *
- * additional informations. *
- * *
- ***************************************************************************/
-
-#include "stdafx.h"
-
-#define _IN_DMA
-
-#include "externals.h"
-#include "registers.h"
-
-////////////////////////////////////////////////////////////////////////
-// READ DMA (one value)
-////////////////////////////////////////////////////////////////////////
-
-unsigned short CALLBACK SPUreadDMA(void)
-{
- unsigned short s=spuMem[spuAddr>>1];
- spuAddr+=2;
- if(spuAddr>0x7ffff) spuAddr=0;
-
- iSpuAsyncWait=0;
-
- return s;
-}
-
-////////////////////////////////////////////////////////////////////////
-// READ DMA (many values)
-////////////////////////////////////////////////////////////////////////
-
-void CALLBACK SPUreadDMAMem(unsigned short * pusPSXMem,int iSize)
-{
- int i;
-
- spuStat |= STAT_DATA_BUSY;
-
- for(i=0;i<iSize;i++)
- {
- Check_IRQ( spuAddr, 0 );
-
-
- *pusPSXMem++=spuMem[spuAddr>>1]; // spu addr got by writeregister
- spuAddr+=2; // inc spu addr
-
- // guess based on Vib Ribbon (below)
- if(spuAddr>0x7ffff) break;
- }
-
- iSpuAsyncWait=0;
-
- spuStat &= ~STAT_DATA_BUSY;
- spuStat &= ~STAT_DMA_NON;
- spuStat &= ~STAT_DMA_W;
- spuStat |= STAT_DMA_R;
-}
-
-////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
-// to investigate: do sound data updates by writedma affect spu
-// irqs? Will an irq be triggered, if new data is written to
-// the memory irq address?
-
-////////////////////////////////////////////////////////////////////////
-// WRITE DMA (one value)
-////////////////////////////////////////////////////////////////////////
-
-void CALLBACK SPUwriteDMA(unsigned short val)
-{
- spuMem[spuAddr>>1] = val; // spu addr got by writeregister
-
- spuAddr+=2; // inc spu addr
- if(spuAddr>0x7ffff) spuAddr=0; // wrap
-
- iSpuAsyncWait=0;
-}
-
-////////////////////////////////////////////////////////////////////////
-// WRITE DMA (many values)
-////////////////////////////////////////////////////////////////////////
-
-void CALLBACK SPUwriteDMAMem(unsigned short * pusPSXMem,int iSize)
-{
- int i;
-
- spuStat |= STAT_DATA_BUSY;
-
- for(i=0;i<iSize;i++)
- {
- Check_IRQ( spuAddr, 0 );
-
- spuMem[spuAddr>>1] = *pusPSXMem++; // spu addr got by writeregister
- spuAddr+=2; // inc spu addr
-
- // Vib Ribbon - stop transfer (reverb playback)
- if(spuAddr>0x7ffff) break;
- }
-
- iSpuAsyncWait=0;
-
-
- spuStat &= ~STAT_DATA_BUSY;
- spuStat &= ~STAT_DMA_NON;
- spuStat &= ~STAT_DMA_R;
- spuStat |= STAT_DMA_W;
-}
-
-////////////////////////////////////////////////////////////////////////
+/*************************************************************************** + dma.c - description + ------------------- + begin : Wed May 15 2002 + copyright : (C) 2002 by Pete Bernert + email : BlackDove@addcom.de + ***************************************************************************/ +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. See also the license.txt file for * + * additional informations. * + * * + ***************************************************************************/ + +#include "stdafx.h" + +#define _IN_DMA + +#include "externals.h" +#include "registers.h" + +//////////////////////////////////////////////////////////////////////// +// READ DMA (one value) +//////////////////////////////////////////////////////////////////////// + +unsigned short CALLBACK SPUreadDMA(void) +{ + unsigned short s=spuMem[spuAddr>>1]; + spuAddr+=2; + if(spuAddr>0x7ffff) spuAddr=0; + + iSpuAsyncWait=0; + + return s; +} + +//////////////////////////////////////////////////////////////////////// +// READ DMA (many values) +//////////////////////////////////////////////////////////////////////// + +void CALLBACK SPUreadDMAMem(unsigned short * pusPSXMem,int iSize) +{ + int i; + + spuStat |= STAT_DATA_BUSY; + + for(i=0;i<iSize;i++) + { + Check_IRQ( spuAddr, 0 ); + + + *pusPSXMem++=spuMem[spuAddr>>1]; // spu addr got by writeregister + spuAddr+=2; // inc spu addr + + // guess based on Vib Ribbon (below) + if(spuAddr>0x7ffff) break; + } + + iSpuAsyncWait=0; + + spuStat &= ~STAT_DATA_BUSY; + spuStat &= ~STAT_DMA_NON; + spuStat &= ~STAT_DMA_W; + spuStat |= STAT_DMA_R; +} + +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// + +// to investigate: do sound data updates by writedma affect spu +// irqs? Will an irq be triggered, if new data is written to +// the memory irq address? + +//////////////////////////////////////////////////////////////////////// +// WRITE DMA (one value) +//////////////////////////////////////////////////////////////////////// + +void CALLBACK SPUwriteDMA(unsigned short val) +{ + spuMem[spuAddr>>1] = val; // spu addr got by writeregister + + spuAddr+=2; // inc spu addr + if(spuAddr>0x7ffff) spuAddr=0; // wrap + + iSpuAsyncWait=0; +} + +//////////////////////////////////////////////////////////////////////// +// WRITE DMA (many values) +//////////////////////////////////////////////////////////////////////// + +void CALLBACK SPUwriteDMAMem(unsigned short * pusPSXMem,int iSize) +{ + int i; + + spuStat |= STAT_DATA_BUSY; + + for(i=0;i<iSize;i++) + { + Check_IRQ( spuAddr, 0 ); + + spuMem[spuAddr>>1] = *pusPSXMem++; // spu addr got by writeregister + spuAddr+=2; // inc spu addr + + // Vib Ribbon - stop transfer (reverb playback) + if(spuAddr>0x7ffff) break; + } + + iSpuAsyncWait=0; + + + spuStat &= ~STAT_DATA_BUSY; + spuStat &= ~STAT_DMA_NON; + spuStat &= ~STAT_DMA_R; + spuStat |= STAT_DMA_W; +} + +//////////////////////////////////////////////////////////////////////// |