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Annotation of 43BSD/sys/vax/flp.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)flp.h       7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: #if VAX780
        !            10: /*
        !            11:  * Console floppy command/status and sectoring information.
        !            12:  */
        !            13: #define        FL_FFC          0x200           /* floppy function complete */
        !            14: #define        FL_ERR          0x80            /* error bit in floppy status byte */
        !            15: #define        FL_PERR         0x905           /* floppy protocol error */
        !            16: #define        FL_DATA         0x100           /* floppy data select code */
        !            17: #define        FL_RS           0x900           /* floppy read sector command */
        !            18: #define        FL_WS           0x901           /* floppy write sector command*/
        !            19: #define        FL_STAT         0x902           /* floppy get status command*/
        !            20: #define        FL_CANCEL       0x904           /* cancel floppy function */
        !            21: 
        !            22: #define        RXFTRK  77              /* tracks/floppy */
        !            23: #define        RXSTRK  26              /* sectors/track */
        !            24: #define        RXBYSEC 128             /* bytes/sector */
        !            25: #define        MAXSEC (RXFTRK*RXSTRK)  /* sectors/floppy */
        !            26: 
        !            27: /*
        !            28:  * In the floppy driver routines, the device active byte is used
        !            29:  * not as a boolean, but as an indicator of the state we are in.
        !            30:  * That is, it contains what to do on the next interrupt.
        !            31:  */
        !            32: 
        !            33: #define        FL_IDLE         0       /* floppy idle */
        !            34: #define        FL_MAND         1       /* about to send read/write command */
        !            35: #define        FL_SEC          2       /* about to send sector # to LSI */
        !            36: #define        FL_TRACK        3       /* about to send track # to LSI */
        !            37: #define        FL_DAX          4       /* transmitting data */
        !            38: #define        FL_DAR          5       /* receiving data */
        !            39: #define        FL_COM          6       /* completing transmission */
        !            40: #define        FL_CAN          7       /* give cancel order - we had an error,
        !            41:                                   and are to restart */
        !            42: 
        !            43: #define        FLERRS          5       /* number of retries before quitting */
        !            44: 
        !            45: /*
        !            46:  * The state byte is used to retain exclusivity,
        !            47:  * and contains the busy flag.
        !            48:  */
        !            49: #define        FL_OPEN         1
        !            50: #define        FL_BUSY         2
        !            51: #endif

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