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Annotation of 42BSD/sys/vaxif/if_dmc.h, revision 1.1.1.1

1.1       root        1: /*     if_dmc.h        6.1     83/07/29        */
                      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

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