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i8237reg.h revision 1.3 
      1  1.1      cgd /*
      2  1.1      cgd  * Intel 8237 DMA Controller
      3  1.2      cgd  *
      4  1.3  mycroft  *	$Id: i8237reg.h,v 1.3 1994/03/01 18:18:07 mycroft Exp $
      5  1.1      cgd  */
      6  1.1      cgd 
      7  1.1      cgd #define	DMA37MD_SINGLE	0x40	/* single pass mode */
      8  1.1      cgd #define	DMA37MD_CASCADE	0xc0	/* cascade mode */
      9  1.1      cgd #define	DMA37MD_WRITE	0x04	/* read the device, write memory operation */
     10  1.1      cgd #define	DMA37MD_READ	0x08	/* write the device, read memory operation */
     11  1.1      cgd 
     12  1.3  mycroft #define	DMA37SM_CLEAR	0x00	/* clear mask bit */
     13  1.3  mycroft #define	DMA37SM_SET	0x04	/* set mask bit */
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