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MDMA.H
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C/C++ Source or Header
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1997-04-30
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1KB
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43 lines
#include "mtypes.h"
#ifndef MDMA_H
#define MDMA_H
#define READ_DMA 0
#define WRITE_DMA 1
#define INDEF_READ 2
#define INDEF_WRITE 3
#ifdef __WATCOMC__
typedef struct{
void *continuous; /* the pointer to a page-continous dma buffer */
UWORD raw_selector; /* the raw allocated dma selector */
} DMAMEM;
#elif defined(__DJGPP__)
typedef struct{
void *continuous; /* the pointer to a page-continous dma buffer */
_go32_dpmi_seginfo raw; /* points to the memory that was allocated */
} DMAMEM;
#else
typedef struct{
void *continuous; /* the pointer to a page-continous dma buffer */
void *raw; /* points to the memory that was allocated */
} DMAMEM;
#endif
DMAMEM *MDma_AllocMem(UWORD size);
void MDma_FreeMem(DMAMEM *dm);
int MDma_Start(int channel,DMAMEM *dm,UWORD size,int type);
void MDma_Stop(int channel);
void *MDma_GetPtr(DMAMEM *dm);
void MDma_Commit(DMAMEM *dm,UWORD index,UWORD count);
UWORD MDma_Todo(int channel);
#endif