1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Systems Programming Group of the University of Utah Computer 6.\" Science Department. 7.\" 8.\" %sccs.include.redist.man% 9.\" 10.\" @(#)ct.4 8.1 (Berkeley) 06/09/93 11.\" 12.Dd 13.Dt CT 4 hp300 14.Os 15.Sh NAME 16.Nm \&ct 17.Nd 18.Tn CS/80 19cartridge tape interface 20.Sh SYNOPSIS 21.Cd "tape ct0 at hpib? slave ?" 22.Sh DESCRIPTION 23The cartridge tape interface as found in the 7946 and 9144 products 24provides a standard tape drive interface as described in 25.Xr mtio 4 26with the following exceptions: 27.Bl -enum 28.It 29There is only one density. 30.It 31Only the 32.Dq raw 33interface is supported. 34.It 35The 36.Dv MTIOCTOP 37.Xr ioctl 2 38is limited. 39In particular, the command, 40.Dv MTFSR 41is not supported. 42.It 43The 44.Dv MTIOCGET 45.Xr ioctl 46is not supported. 47.It 48The record size for read and write operations must be between 491K and 64K inclusive. 50.El 51.Pp 52Special files 53.Pa rct0 54through 55.Pa rct3 56refer to rewind on close interfaces to drives 0 to 3. 57Files 58.Pa rct4 59through 60.Pa rct7 61refer to no-rewind interfaces. 62Files 63.Pa rct8 64through 65.Pa rct11 66refer to streaming rewind on close interfaces. (Only 9144 type devices 67can stream.) 68Lastly, 69.Pa rct12 70through 71.Pa rct15 72refer to streaming no-rewind interfaces. 73.Sh SEE ALSO 74.Xr mt 1 , 75.Xr tar 1 , 76.Xr tp 1 , 77.Xr mtio 4 . 78.Sh BUGS 79Read and writes of less than 1024 bytes will not behave as expected. 80