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Annotation of researchv9/sys.vax/h/htreg.h, revision 1.1

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

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