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| Commit | Line | Data |
|---|---|---|
| 12ef2795 | 1 | /* if_dmc.h 4.2 82/02/21 */ |
| c9fd255c BJ |
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 | ||
| 12ef2795 | 29 | #define RDYSCAN 16 /* loop delay for RDYI after RQI */ |
| c9fd255c BJ |
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 |