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i8237.h (344B) - Raw

      1 /*
      2  * Intel 8237 DMA Controller
      3  */
      4 
      5 #define	DMA37MD_SINGLE	0x40	/* single pass mode */
      6 #define	DMA37MD_CASCADE	0xc0	/* cascade mode */
      7 #define	DMA37MD_AUTO	0x50	/* autoinitialise single pass mode */
      8 #define	DMA37MD_WRITE	0x04	/* read the device, write memory operation */
      9 #define	DMA37MD_READ	0x08	/* write the device, read memory operation */