/* DMA card description */

#define UNIX_DMA	0x500000

struct dma_regs {
   union { short    dma_clear;
	   caddr_t  dma_addr; } dma_r0;
   short dma_cnt;
   short dma_ctrl;
   };

typedef struct dma_regs dma_card[1];

#define dma_stat dma_ctrl

/* control register */
#define DMA_I_FLAG	0x01
#define DMA_WMODE	0x02
#define DMA_WRIT	0x04
#define DMA_PRI		0x08

/* status */
#define DMA_ARMED	0x01
#define DMA_INTG	0x02