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Annotation of coherent/f/usr/include.78/sys/fdioctl.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT 386 Device Driver Kit release 2.0
        !             3:  *     Copyright (c) 1982, 1992 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: 
        !             7: /*
        !             8:  * Floppy I/O control commands.
        !             9:  */
        !            10: 
        !            11: #ifndef __SYS_FDIOCTL_H__
        !            12: #define __SYS_FDIOCTL_H__
        !            13: 
        !            14: #define FDIOC          ('F'<<8)
        !            15: #define FDFORMAT       (FDIOC|1)       /* Format diskette track */
        !            16: 
        !            17: /*
        !            18:  * Formatting information is largely supplied
        !            19:  * by the low nibble of the minor device number opened for formatting
        !            20:  * which will specify the number of heads and the track density.
        !            21:  *     0       1 head, 40 tracks, 8 sectors per track
        !            22:  *     1       2 heads, 40 tracks, 8 sectors per track
        !            23:  *     2       2 heads, 80 tracks, 8 sectors per track
        !            24:  *     3       1 head, 40 tracks, 9 sectors per track
        !            25:  *     4       2 heads, 40 tracks, 9 sectors per track
        !            26:  *     5       2 heads, 80 tracks, 9 sectors per track
        !            27:  * Each FDFORMAT command will format a single track.
        !            28:  * The parameter block consists of an array of fform structures
        !            29:  * one for each sector being formatted specifying the cylinder,
        !            30:  * head, sector number, and size of the sector.
        !            31:  */
        !            32: struct fform {
        !            33:        char    ff_cylin;       /* 0 .. number of tracks - 1 */
        !            34:        char    ff_head;        /* 0 or 1 */
        !            35:        char    ff_sect;        /* 1 .. number of sectors */
        !            36:        char    ff_size;        /* 1, 2, or 3 for 256, 512, or 1024 */
        !            37: };
        !            38: 
        !            39: #endif

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