1.\" $NetBSD: ht.4,v 1.10 2003/08/07 10:31:11 agc Exp $ 2.\" 3.\" Copyright (c) 1980, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" from: @(#)ht.4 8.1 (Berkeley) 6/5/93 31.\" 32.Dd June 5, 1993 33.Dt HT 4 vax 34.Os 35.Sh NAME 36.Nm ht 37.Nd 38.Tn TM-03 Ns / Tn TE-16 , 39.Tn TU-45 , 40.Tn TU-77 41.Tn MASSBUS 42mag tape device interface: 43.Sh SYNOPSIS 44.Cd "ht0 at mba? drive ?" 45.Cd "tu0 at ht0 slave 0" 46.Sh DESCRIPTION 47NOTE: This driver has not been ported from 48.Bx 4.4 49yet. 50.Pp 51The 52.Tn TM-03 53transport combination provides a standard tape drive 54interface as described in 55.Xr mtio 4 . 56All drives provide both 800 and 1600 57.Tn BPI ; 58the 59.Tn TE-16 60runs at 45 61.Tn IPS , 62the 63.Tn TU-45 64at 75 65.Tn IPS , 66while the 67.Tn TU-77 68runs at 125 69.Tn IPS 70and autoloads tapes. 71.Sh DIAGNOSTICS 72.Bl -diag 73.It tu%d: no write ring. 74An attempt was made to write on the tape drive 75when no write ring was present; this message is written on the terminal of 76the user who tried to access the tape. 77.Pp 78.It tu%d: not online. 79An attempt was made to access the tape while it 80was offline; this message is written on the terminal of the user 81who tried to access the tape. 82.Pp 83.It tu%d: can't change density in mid-tape. 84An attempt was made to write 85on a tape at a different density than is already recorded on the tape. 86This message is written on the terminal of the user who tried to switch 87the density. 88.Pp 89.It "tu%d: hard error bn%d mbsr=%b er=%b ds=%b." 90A tape error occurred 91at block 92.Em bn ; 93the ht error register and drive status register are 94printed in octal with the bits symbolically decoded. Any error is 95fatal on non-raw tape; when possible the driver will have retried 96the operation which failed several times before reporting the error. 97.El 98.Sh SEE ALSO 99.Xr mt 1 , 100.Xr tar 1 , 101.Xr mt 4 , 102.Xr mtio 4 , 103.Xr physio 4 , 104.Xr tm 4 , 105.Xr ts 4 , 106.Xr ut 4 107.Sh HISTORY 108An 109.Nm 110driver appeared in 111.At v6 . 112.Sh BUGS 113May hang if physical (non-data) errors occur. 114