1.\" $NetBSD: ct.4,v 1.7 2001/04/11 19:07:33 wiz Exp $ 2.\" 3.\" Copyright (c) 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" the Systems Programming Group of the University of Utah Computer 8.\" Science Department. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. All advertising materials mentioning features or use of this software 19.\" must display the following acknowledgement: 20.\" This product includes software developed by the University of 21.\" California, Berkeley and its contributors. 22.\" 4. Neither the name of the University nor the names of its contributors 23.\" may be used to endorse or promote products derived from this software 24.\" without specific prior written permission. 25.\" 26.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36.\" SUCH DAMAGE. 37.\" 38.\" from: @(#)ct.4 8.1 (Berkeley) 6/9/93 39.\" 40.Dd June 9, 1993 41.Dt CT 4 hp300 42.Os 43.Sh NAME 44.Nm ct 45.Nd 46.Tn CS/80 47cartridge tape interface 48.Sh SYNOPSIS 49.Cd "ct0 at hpib? slave ?" 50.Sh DESCRIPTION 51The cartridge tape interface as found in the 7946 and 9144 products 52provides a standard tape drive interface as described in 53.Xr mtio 4 54with the following exceptions: 55.Bl -enum 56.It 57There is only one density. 58.It 59Only the 60.Dq raw 61interface is supported. 62.It 63The 64.Dv MTIOCTOP 65.Xr ioctl 2 66is limited. 67In particular, the command, 68.Dv MTFSR 69is not supported. 70.It 71The 72.Dv MTIOCGET 73.Xr ioctl 2 74is not supported. 75.It 76The record size for read and write operations must be between 771K and 64K inclusive. 78.El 79.Pp 80Special files 81.Pa rct0 82through 83.Pa rct3 84refer to rewind on close interfaces to drives 0 to 3. 85Files 86.Pa rct4 87through 88.Pa rct7 89refer to no-rewind interfaces. 90Files 91.Pa rct8 92through 93.Pa rct11 94refer to streaming rewind on close interfaces. (Only 9144 type devices 95can stream.) 96Lastly, 97.Pa rct12 98through 99.Pa rct15 100refer to streaming no-rewind interfaces. 101.Sh SEE ALSO 102.Xr mt 1 , 103.Xr tar 1 , 104.Xr mtio 4 105.Sh BUGS 106Read and writes of less than 1024 bytes will not behave as expected. 107