diff options
| author | SND\weimingzhi_cp <SND\weimingzhi_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97> | 2009-10-31 15:48:52 +0000 |
|---|---|---|
| committer | SND\weimingzhi_cp <SND\weimingzhi_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97> | 2009-10-31 15:48:52 +0000 |
| commit | d4e4912b5bd1f70022567abc3df880f32e174567 (patch) | |
| tree | b6797f8ec1278c53f22b71197706a661880d14b4 /macosx/plugins/PeopsSpu109/src/dma.c | |
| parent | e719dae71d52983edb311fa29fb88a01220547ec (diff) | |
| download | pcsxr-d4e4912b5bd1f70022567abc3df880f32e174567.tar.gz | |
git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@34345 e17a0e51-4ae3-4d35-97c3-1a29b211df97
Diffstat (limited to 'macosx/plugins/PeopsSpu109/src/dma.c')
| -rwxr-xr-x | macosx/plugins/PeopsSpu109/src/dma.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/macosx/plugins/PeopsSpu109/src/dma.c b/macosx/plugins/PeopsSpu109/src/dma.c new file mode 100755 index 00000000..d25a4bf9 --- /dev/null +++ b/macosx/plugins/PeopsSpu109/src/dma.c @@ -0,0 +1,117 @@ +/***************************************************************************
+ 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. *
+ * *
+ ***************************************************************************/
+
+//*************************************************************************//
+// History of changes:
+//
+// 2002/05/15 - Pete
+// - generic cleanup for the Peops release
+//
+//*************************************************************************//
+
+#include "stdafx.h"
+
+#define _IN_DMA
+
+#include "externals.h"
+#include "swap.h"
+
+////////////////////////////////////////////////////////////////////////
+// READ DMA (one value)
+////////////////////////////////////////////////////////////////////////
+
+unsigned short CALLBACK SPUreadDMA(void)
+{
+ unsigned short s;
+
+ s=LE2HOST16(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, mask = 0x7fffe;
+
+ for(i=0;i<iSize;i++)
+ {
+ *pusPSXMem++=spuMem[spuAddr>>1]; // spu addr got by writeregister
+ //spuAddr+=2; // inc spu addr
+ //if(spuAddr>0x7ffff) spuAddr=0; // wrap
+ spuAddr = (spuAddr+2) & mask; // wrap
+ }
+
+ iSpuAsyncWait=0;
+
+}
+
+////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////
+
+// 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] = HOST2LE16(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, mask = 0x7fffe;
+
+ for(i=0;i<iSize;i++)
+ {
+ spuMem[spuAddr>>1] = *pusPSXMem++; // spu addr got by writeregister
+ //spuAddr+=2; // inc spu addr
+ //if(spuAddr>0x7ffff) spuAddr=0; // wrap
+ spuAddr = (spuAddr+2) & mask; // wrap
+ }
+
+ iSpuAsyncWait=0;
+
+}
+
+////////////////////////////////////////////////////////////////////////
+
|