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Annotation of uae/src/include/dos-dma.h, revision 1.1.1.1

1.1       root        1:  /*
                      2:   * UAE - The Un*x Amiga Emulator
                      3:   *
                      4:   * DOS DMA interface.
                      5:   *
                      6:   * (c) 1996 Peter Remmers
                      7:   */
                      8: 
                      9: /* Transfer modes */
                     10: #define DMA_MODE_WRITE     0x04
                     11: #define DMA_MODE_READ      0x08
                     12: /* autoinitialization */
                     13: #define DMA_MODE_AUTOINIT  0x10
                     14: /* address increment/decrement */
                     15: #define DMA_MODE_INCREMENT 0x00
                     16: #define DMA_MODE_DECREMENT 0x20
                     17: /* DMA Modes */
                     18: #define DMA_MODE_DEMAND    0x00
                     19: #define DMA_MODE_SINGLE    0x40
                     20: #define DMA_MODE_BLOCK     0x80
                     21: #define DMA_MODE_CASCADE   0xC0
                     22: 
                     23: /* convenience shortcuts */
                     24: #define DMA_READ  ( DMA_MODE_READ  | DMA_MODE_INCREMENT | DMA_MODE_SINGLE )
                     25: #define DMA_WRITE ( DMA_MODE_WRITE | DMA_MODE_INCREMENT | DMA_MODE_SINGLE )
                     26: #define DMA_READ_AUTOINIT  ( DMA_READ  | DMA_MODE_AUTOINIT )
                     27: #define DMA_WRITE_AUTOINIT ( DMA_WRITE | DMA_MODE_AUTOINIT )
                     28: 
                     29: extern unsigned long DMA_AllocDMABuf (_go32_dpmi_seginfo *info);
                     30: extern void  DMA_Mask         (unsigned char channel);
                     31: extern void  DMA_UnMask       (unsigned char channel);
                     32: extern void  DMA_InitTransfer (unsigned char channel, unsigned char Mode,
                     33:                               unsigned long PhysAddr, unsigned short Count);

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