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Annotation of 41BSD/4.0.upgrade/sys/h/htreg.h, revision 1.1.1.1

1.1       root        1: /*     htreg.h 4.1     81/03/21        */
                      2: 
                      3: struct htdevice
                      4: {
                      5:        int     htcs1;          /* control status register */
                      6:        int     htds;           /* drive status register */
                      7:        int     hter;           /* error register */
                      8:        int     htmr;           /* maintenance register */
                      9:        int     htas;           /* attention status register */
                     10:        int     htfc;           /* frame counter */
                     11:        int     htdt;           /* drive type register */
                     12:        int     htck;           /* nrzi check (crc) error character */
                     13:        int     htsn;           /* serial number register */
                     14:        int     httc;           /* tape controll register */
                     15: };
                     16: 
                     17: /* htcs1 */
                     18: #define        HT_GO           000001          /* go bit */
                     19: #define        HT_SENSE        000000          /* no operations (sense) */
                     20: #define        HT_REWOFFL      000002          /* rewind offline */
                     21: #define        HT_REW          000006          /* rewind */
                     22: #define        HT_DCLR         000010          /* drive clear */
                     23: #define        HT_RIP          000020          /* read in preset */
                     24: #define        HT_ERASE        000024          /* erase */
                     25: #define        HT_WEOF         000026          /* write tape mark */
                     26: #define        HT_SFORW        000030          /* space forward */
                     27: #define        HT_SREV         000032          /* space reverse */
                     28: #define        HT_WCHFWD       000050          /* write check forward */
                     29: #define        HT_WCHREV       000056          /* write check reverse */
                     30: #define        HT_WCOM         000060          /* write forward */
                     31: #define        HT_RCOM         000070          /* read forward */
                     32: #define        HT_RREV         000076          /* read reverse */
                     33: 
                     34: /* htds */
                     35: #define        HTDS_ATA        0100000         /* attention active */
                     36: #define        HTDS_ERR        0040000         /* composite error */
                     37: #define        HTDS_PIP        0020000         /* positioning in progress */
                     38: #define        HTDS_MOL        0010000         /* medium on line */
                     39: #define        HTDS_WRL        0004000         /* write lock */
                     40: #define        HTDS_EOT        0002000         /* end of tape */
                     41: /* bit 9 is unused */
                     42: #define        HTDS_DPR        0000400         /* drive present (always 1) */
                     43: #define        HTDS_DRY        0000200         /* drive ready */
                     44: #define        HTDS_SSC        0000100         /* slave status change */
                     45: #define        HTDS_PES        0000040         /* phase-encoded status */
                     46: #define        HTDS_SDWN       0000020         /* settle down */
                     47: #define        HTDS_IDB        0000010         /* identification burst */
                     48: #define        HTDS_TM         0000004         /* tape mark */
                     49: #define        HTDS_BOT        0000002         /* beginning of tape */
                     50: #define        HTDS_SLA        0000001         /* slave attention */
                     51: 
                     52: #define        HTDS_BITS \
                     53: "\10\20ATA\17ERR\16PIP\15MOL\14WRL\13EOT\11DPR\10DRY\
                     54: \7SSC\6PES\5SDWN\4IDB\3TM\2BOT\1SLA"
                     55: 
                     56: /* hter */
                     57: #define        HTER_CORCRC     0100000         /* correctible data or ecc */
                     58: #define        HTER_UNS        0040000         /* unsafe */
                     59: #define        HTER_OPI        0020000         /* operation incomplete */
                     60: #define        HTER_DTE        0010000         /* drive timing error */
                     61: #define        HTER_NEF        0004000         /* non-executable function */
                     62: #define        HTER_CSITM      0002000         /* correctable skew/illegal tape mark */
                     63: #define        HTER_FCE        0001000         /* frame count error */
                     64: #define        HTER_NSG        0000400         /* non-standard gap */
                     65: #define        HTER_PEFLRC     0000200         /* format error or lrc error */
                     66: #define        HTER_INCVPE     0000100         /* incorrectable data error or vertical
                     67:                                           parity error */
                     68: #define        HTER_DPAR       0000040         /* data parity error */
                     69: #define        HTER_FMT        0000020         /* format error */
                     70: #define        HTER_CPAR       0000010         /* control bus parity error */
                     71: #define        HTER_RMR        0000004         /* register modification refused */
                     72: #define        HTER_ILR        0000002         /* illegal register */
                     73: #define        HTER_ILF        0000001         /* illegal function */
                     74: 
                     75: #define        HTER_BITS \
                     76: "\10\20CORCRC\17UNS\16OPI\15DTE\14NEF\13CSITM\12FCE\11NSG\10PEFLRC\
                     77: \7INCVPE\6DPAR\5FMT\4CPAR\3RMR\2ILR\1ILF"
                     78: #define        HTER_HARD \
                     79:        (HTER_UNS|HTER_OPI|HTER_NEF|HTER_DPAR|HTER_FMT|HTER_CPAR| \
                     80:        HTER_RMR|HTER_ILR|HTER_ILF)
                     81: 
                     82: /* htdt */
                     83: #define        HTDT_NSA        0100000         /* not sector addressed; always 1 */
                     84: #define        HTDT_TAP        0040000         /* tape; always 1 */
                     85: #define        HTDT_MOH        0020000         /* moving head; always 0 */
                     86: #define        HTDT_7CH        0010000         /* 7 channel; always 0 */
                     87: #define        HTDT_DRQ        0004000         /* drive requested; always 0 */
                     88: #define        HTDT_SPR        0002000         /* slave present */
                     89: /* bit 9 is spare */
                     90: /* bits 8-0 are formatter/transport type */
                     91: 
                     92: /* httc */
                     93: #define        HTTC_ACCL       0100000         /* transport is not reading/writing */
                     94: #define        HTTC_FCS        0040000         /* frame count status */
                     95: #define        HTTC_SAC        0020000         /* slave address change */
                     96: #define        HTTC_EAODTE     0010000         /* enable abort on data xfer errors */
                     97: /* bits 8-10 are density select */
                     98: #define        HTTC_800BPI     0001400         /* in bits 8-10, dens=1600 */
                     99: #define        HTTC_1600BPI    0002000         /* in bits 8-10, dens=800 */
                    100: /* bits 4-7 are format select */
                    101: #define        HTTC_PDP11      0000300         /* in bits 4-7, pdp11 normal format */
                    102: #define        HTTC_EVEN       0000010         /* select even parity */
                    103: /* bits 0 - 2 are slave select */
                    104: 
                    105: #define        b_repcnt  b_bcount
                    106: #define        b_command b_resid

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