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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
commit253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch)
treeadf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man4/ht.4
parenta9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff)
docs: Added All NetBSD Manuals
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+.\" $NetBSD: ht.4,v 1.14 2017/08/01 11:11:17 wiz Exp $
+.\"
+.\" Copyright (c) 1980, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" from: @(#)ht.4 8.1 (Berkeley) 6/5/93
+.\"
+.Dd February 17, 2017
+.Dt HT 4 vax
+.Os
+.Sh NAME
+.Nm ht
+.Nd
+.Tn TM-03 Ns / Tn TE-16 ,
+.Tn TU-45 ,
+.Tn TU-77
+.Tn MASSBUS
+mag tape device interface:
+.Sh SYNOPSIS
+.Cd "ht0 at mba? drive ?"
+.Cd "tu0 at ht0 slave 0"
+.Sh DESCRIPTION
+NOTE: This driver has not been ported from
+.Bx 4.4
+yet.
+.Pp
+The
+.Tn TM-03
+transport combination provides a standard tape drive
+interface as described in
+.Xr vax/mtio 4 .
+All drives provide both 800 and 1600
+.Tn BPI ;
+the
+.Tn TE-16
+runs at 45
+.Tn IPS ,
+the
+.Tn TU-45
+at 75
+.Tn IPS ,
+while the
+.Tn TU-77
+runs at 125
+.Tn IPS
+and autoloads tapes.
+.Sh DIAGNOSTICS
+.Bl -diag
+.It tu%d: no write ring.
+An attempt was made to write on the tape drive
+when no write ring was present; this message is written on the terminal of
+the user who tried to access the tape.
+.It tu%d: not online.
+An attempt was made to access the tape while it
+was offline; this message is written on the terminal of the user
+who tried to access the tape.
+.It tu%d: can't change density in mid-tape.
+An attempt was made to write
+on a tape at a different density than is already recorded on the tape.
+This message is written on the terminal of the user who tried to switch
+the density.
+.It "tu%d: hard error bn%d mbsr=%b er=%b ds=%b."
+A tape error occurred
+at block
+.Em bn ;
+the ht error register and drive status register are
+printed in octal with the bits symbolically decoded.
+Any error is
+fatal on non-raw tape; when possible the driver will have retried
+the operation which failed several times before reporting the error.
+.El
+.Sh SEE ALSO
+.Xr tar 1 ,
+.Xr vax/mt 1 ,
+.Xr physio 4 ,
+.Xr vax/mt 4 ,
+.Xr vax/mtio 4 ,
+.Xr vax/tm 4 ,
+.Xr vax/ts 4 ,
+.Xr vax/ut 4
+.Sh HISTORY
+An
+.Nm
+driver appeared in
+.At v6 .
+.Sh BUGS
+May hang if physical (non-data) errors occur.