HardenedBSD/sys/dev/ic/i8237.h

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1993-06-12 16:58:17 +02:00
/*
* Intel 8237 DMA Controller
*
* $Id$
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*/
#define DMA37MD_SINGLE 0x40 /* single pass mode */
#define DMA37MD_CASCADE 0xc0 /* cascade mode */
#define DMA37MD_WRITE 0x04 /* read the device, write memory operation */
#define DMA37MD_READ 0x08 /* write the device, read memory operation */