1.\" $NetBSD: ht.4,v 1.9 2002/01/15 02:08:38 wiz 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)ht.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt HT 4 vax 38.Os 39.Sh NAME 40.Nm ht 41.Nd 42.Tn TM-03 Ns / Tn TE-16 , 43.Tn TU-45 , 44.Tn TU-77 45.Tn MASSBUS 46mag tape device interface: 47.Sh SYNOPSIS 48.Cd "ht0 at mba? drive ?" 49.Cd "tu0 at ht0 slave 0" 50.Sh DESCRIPTION 51NOTE: This driver has not been ported from 52.Bx 4.4 53yet. 54.Pp 55The 56.Tn TM-03 57transport combination provides a standard tape drive 58interface as described in 59.Xr mtio 4 . 60All drives provide both 800 and 1600 61.Tn BPI ; 62the 63.Tn TE-16 64runs at 45 65.Tn IPS , 66the 67.Tn TU-45 68at 75 69.Tn IPS , 70while the 71.Tn TU-77 72runs at 125 73.Tn IPS 74and autoloads tapes. 75.Sh DIAGNOSTICS 76.Bl -diag 77.It tu%d: no write ring. 78An attempt was made to write on the tape drive 79when no write ring was present; this message is written on the terminal of 80the user who tried to access the tape. 81.Pp 82.It tu%d: not online. 83An attempt was made to access the tape while it 84was offline; this message is written on the terminal of the user 85who tried to access the tape. 86.Pp 87.It tu%d: can't change density in mid-tape. 88An attempt was made to write 89on a tape at a different density than is already recorded on the tape. 90This message is written on the terminal of the user who tried to switch 91the density. 92.Pp 93.It "tu%d: hard error bn%d mbsr=%b er=%b ds=%b." 94A tape error occurred 95at block 96.Em bn ; 97the ht error register and drive status register are 98printed in octal with the bits symbolically decoded. Any error is 99fatal on non-raw tape; when possible the driver will have retried 100the operation which failed several times before reporting the error. 101.El 102.Sh SEE ALSO 103.Xr mt 1 , 104.Xr tar 1 , 105.Xr mt 4 , 106.Xr mtio 4 , 107.Xr physio 4 , 108.Xr tm 4 , 109.Xr ts 4 , 110.Xr ut 4 111.Sh HISTORY 112An 113.Nm 114driver appeared in 115.At v6 . 116.Sh BUGS 117May hang if physical (non-data) errors occur. 118