i8237reg.h revision 1.5
1 1.5 mycroft /* $NetBSD: i8237reg.h,v 1.5 1996/03/01 22:27:09 mycroft Exp $ */ 2 1.4 cgd 3 1.1 cgd /* 4 1.1 cgd * Intel 8237 DMA Controller 5 1.1 cgd */ 6 1.1 cgd 7 1.5 mycroft #define DMA37MD_WRITE 0x04 /* read the device, write memory operation */ 8 1.5 mycroft #define DMA37MD_READ 0x08 /* write the device, read memory operation */ 9 1.5 mycroft #define DMA37MD_LOOP 0x10 /* auto-initialize mode */ 10 1.1 cgd #define DMA37MD_SINGLE 0x40 /* single pass mode */ 11 1.1 cgd #define DMA37MD_CASCADE 0xc0 /* cascade mode */ 12 1.1 cgd 13 1.3 mycroft #define DMA37SM_CLEAR 0x00 /* clear mask bit */ 14 1.3 mycroft #define DMA37SM_SET 0x04 /* set mask bit */ 15
Indexes created Tue Sep 30 07:10:03 GMT 2025