Annotation of sys/dev/ic/i8237reg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: i8237reg.h,v 1.3 1999/08/04 23:07:49 niklas Exp $ */
! 2: /* $NetBSD: i8237reg.h,v 1.5 1996/03/01 22:27:09 mycroft Exp $ */
! 3:
! 4: /*
! 5: * Intel 8237 DMA Controller
! 6: */
! 7:
! 8: #define DMA37MD_DEMAND 0x00 /* demand mode */
! 9: #define DMA37MD_WRITE 0x04 /* read the device, write memory operation */
! 10: #define DMA37MD_READ 0x08 /* write the device, read memory operation */
! 11: #define DMA37MD_LOOP 0x10 /* auto-initialize mode */
! 12: #define DMA37MD_SINGLE 0x40 /* single pass mode */
! 13: #define DMA37MD_CASCADE 0xc0 /* cascade mode */
! 14:
! 15: #define DMA37SM_CLEAR 0x00 /* clear mask bit */
! 16: #define DMA37SM_SET 0x04 /* set mask bit */
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