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Annotation of 3BSD/sys/h/flp.h, revision 1.1.1.1

1.1       root        1: /*     flp.h   2.1     1/5/80 */
                      2: 
                      3: /*
                      4:  * Console floppy command/status and sectoring information.
                      5:  */
                      6: #define        FL_FFC          0x200           /* floppy function complete */
                      7: #define        FL_ERR          0x80            /* error bit in floppy status byte */
                      8: #define        FL_PERR         0x905           /* floppy protocol error */
                      9: #define        FL_DATA         0x100           /* floppy data select code */
                     10: #define        FL_RS           0x900           /* floppy read sector command */
                     11: #define        FL_WS           0x901           /* floppy write sector command*/
                     12: #define        FL_STAT         0x902           /* floppy get status command*/
                     13: #define        FL_CANCEL       0x904           /* cancel floppy function */
                     14: 
                     15: #define        RXFTRK  77              /* tracks/floppy */
                     16: #define        RXSTRK  26              /* sectors/track */
                     17: #define        RXBYSEC 128             /* bytes/sector */
                     18: #define        MAXSEC (RXFTRK*RXSTRK)  /* sectors/floppy */
                     19: 
                     20: /*
                     21:  * In the floppy driver routines, the device active byte is used
                     22:  * not as a boolean, but as an indicator of the state we are in.
                     23:  * That is, it contains what to do on the next interrupt.
                     24:  */
                     25: 
                     26: #define        FL_IDLE         0       /* floppy idle */
                     27: #define        FL_MAND         1       /* about to send read/write command */
                     28: #define        FL_SEC          2       /* about to send sector # to LSI */
                     29: #define        FL_TRACK        3       /* about to send track # to LSI */
                     30: #define        FL_DAX          4       /* transmitting data */
                     31: #define        FL_DAR          5       /* receiving data */
                     32: #define        FL_COM          6       /* completing transmission */
                     33: #define        FL_CAN          7       /* give cancel order - we had an error,
                     34:                                   and are to restart */
                     35: 
                     36: #define        FLERRS          5       /* number of retries before quitting */
                     37: 
                     38: /*
                     39:  * The state byte is used to retain exclusivity,
                     40:  * and contains the busy flag.
                     41:  */
                     42: #define        FL_OPEN         1
                     43: #define        FL_BUSY         2

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