* Copyright (c) 1982, 1990 The Regents of the University of California.
* Redistribution is only permitted until one year after the first shipment
* of 4.4BSD by the Regents. Otherwise, redistribution and use in source and
* binary forms are permitted provided that: (1) source distributions retain
* this entire copyright notice and comment, and (2) distributions including
* binaries display the following acknowledgement: This product includes
* software developed by the University of California, Berkeley and its
* contributors'' in the documentation or other materials provided with the
* distribution and in all advertising materials mentioning features or use
* of this software. Neither the name of the University nor the names of
* its contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* @(#)ctreg.h 7.1 (Berkeley) 5/8/90
u_int d_iuw
:16, /* controller: installed unit word */
d_cmaxxfr
:16, /* controller: max transfer rate (Kb) */
d_ctype
:8, /* controller: controller type */
d_utype
:8, /* unit: unit type */
d_name
:24, /* unit: name (6 BCD digits) */
d_sectsize
:16, /* unit: # of bytes per block (sector) */
d_blkbuf
:8, /* unit: # of blocks which can be buffered */
d_burstsize
:8, /* unit: recommended burst size */
d_blocktime
:16, /* unit: block time (u-sec) */
d_uavexfr
:16, /* unit: average transfer rate (Kb) */
d_retry
:16, /* unit: optimal retry time (1/100-sec) */
d_access
:16, /* unit: access time param (1/100-sec) */
d_maxint
:8, /* unit: maximum interleave */
d_fvbyte
:8, /* unit: fixed volume byte */
d_rvbyte
:8, /* unit: removeable volume byte */
d_maxcyl
:24, /* volume: maximum cylinder */
d_maxhead
:8, /* volume: maximum head */
d_maxsect
:16, /* volume: maximum sector on track */
d_maxvsecth
:16, /* volume: maximum sector on volume (MSW) */
d_maxvsectl
:32, /* volume: maximum sector on volume (LSWs) */
d_interleave
:8; /* volume: current interleave */
/* convert bytes to 1k tape block and back */
#define CTBTOK(x) ((x) >> 10)
#define CTKTOB(x) ((x) << 10)
#define C_SUNIT(x) (0x20 | (x))
#define C_SVOL(x) (0x40 | (x))