Commit | Line | Data |
---|---|---|
62b9b50b C |
1 | /* if_dmc.h 4.2 82/02/21 */ |
2 | ||
3 | /* | |
4 | * DMC-11 Interface | |
5 | */ | |
6 | ||
7 | struct dmcdevice { | |
8 | union { | |
9 | char b[8]; | |
10 | short w[4]; | |
11 | } un; | |
12 | }; | |
13 | ||
14 | #define bsel0 un.b[0] | |
15 | #define bsel1 un.b[1] | |
16 | #define bsel2 un.b[2] | |
17 | #define bsel3 un.b[3] | |
18 | #define bsel4 un.b[4] | |
19 | #define bsel5 un.b[5] | |
20 | #define bsel6 un.b[6] | |
21 | #define bsel7 un.b[7] | |
22 | #define sel0 un.w[0] | |
23 | #define sel2 un.w[1] | |
24 | #define sel4 un.w[2] | |
25 | #define sel6 un.w[3] | |
26 | ||
27 | #define DMCMTU (2048) | |
28 | ||
29 | #define RDYSCAN 16 /* loop delay for RDYI after RQI */ | |
30 | ||
31 | /* defines for bsel0 */ | |
32 | #define DMC_BACCI 0 | |
33 | #define DMC_CNTLI 1 | |
34 | #define DMC_PERR 2 | |
35 | #define DMC_BASEI 3 | |
36 | #define DMC_WRITE 0 /* transmit block */ | |
37 | #define DMC_READ 4 /* read block */ | |
38 | #define DMC_RQI 0040 /* port request bit */ | |
39 | #define DMC_IEI 0100 /* enable input interrupts */ | |
40 | #define DMC_RDYI 0200 /* port ready */ | |
41 | ||
42 | /* defines for bsel1 */ | |
43 | #define DMC_MCLR 0100 /* DMC11 Master Clear */ | |
44 | #define DMC_RUN 0200 /* clock running */ | |
45 | ||
46 | /* defines for bsel2 */ | |
47 | #define DMC_BACCO 0 | |
48 | #define DMC_CNTLO 1 | |
49 | #define DMC_OUX 0 /* transmit block */ | |
50 | #define DMC_OUR 4 /* read block */ | |
51 | #define DMC_IEO 0100 /* enable output interrupts */ | |
52 | #define DMC_RDYO 0200 /* port available */ | |
53 | ||
54 | /* defines for CNTLI mode */ | |
55 | #define DMC_HDPLX 02000 /* half duplex DDCMP operation */ | |
56 | #define DMC_SEC 04000 /* half duplex secondary station */ | |
57 | #define DMC_MAINT 00400 /* enter maintenance mode */ | |
58 | ||
59 | /* defines for BACCI/O and BASEI mode */ | |
60 | #define DMC_XMEM 0140000 /* xmem bit position */ | |
61 | #define DMC_CCOUNT 0037777 /* character count mask */ | |
62 | #define DMC_RESUME 0002000 /* resume (BASEI only) */ | |
63 | ||
64 | /* defines for CNTLO */ | |
65 | #define DMC_CNTMASK 01777 | |
66 | #define DMC_FATAL 01620 |