* Copyright (c) 1982, 1990 The Regents of the University of California.
* %sccs.include.redist.c%
* @(#)ctreg.h 7.1 (Berkeley) %G%
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))