diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
| commit | d6583bb2a13f329cf0332ef2570eb8bb8fc0e39c (patch) | |
| tree | ece253b876159b39c620e62b6c9b1174642e070e /sys/dev/ic/i8237reg.h | |
initial import of NetBSD tree
Diffstat (limited to 'sys/dev/ic/i8237reg.h')
| -rw-r--r-- | sys/dev/ic/i8237reg.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sys/dev/ic/i8237reg.h b/sys/dev/ic/i8237reg.h new file mode 100644 index 00000000000..68a4e767930 --- /dev/null +++ b/sys/dev/ic/i8237reg.h @@ -0,0 +1,13 @@ +/* $NetBSD: i8237reg.h,v 1.4 1994/10/27 04:18:39 cgd Exp $ */ + +/* + * Intel 8237 DMA Controller + */ + +#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 */ + +#define DMA37SM_CLEAR 0x00 /* clear mask bit */ +#define DMA37SM_SET 0x04 /* set mask bit */ |