1.\" Copyright (c) 1990, 1991 The Regents of the University of California. 2.\" 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.\" %sccs.include.redist.man% 8.\" 9.\" @(#)ct.4 5.2 (Berkeley) 03/27/91 10.\" 11.Dd 12.Dt CT 4 hp300 13.Os 14.Sh NAME 15.Nm \&ct 16.Nd 17.Tn CS/80 18cartridge tape interface 19.Sh SYNOPSIS 20.Cd "tape ct0 at hpib? slave ?" 21.Sh DESCRIPTION 22The cartridge tape interface as found in the 7946 and 9144 products 23provides a standard tape drive interface as described in 24.Xr mtio 4 25with the following exceptions: 26.Bl -enum 27.It 28There is only one density. 29.It 30Only the 31.Dq raw 32interface is supported. 33.It 34The 35.Dv MTIOCTOP 36.Xr ioctl 2 37is limited. 38In particular, the command, 39.Dv MTFSR 40is not supported. 41.It 42The 43.Dv MTIOCGET 44.Xr ioctl 45is not supported. 46.It 47The record size for read and write operations must be between 481K and 64K inclusive. 49.El 50.Pp 51Special files 52.Pa rct0 53through 54.Pa rct3 55refer to rewind on close interfaces to drives 0 to 3. 56Files 57.Pa rct4 58through 59.Pa rct7 60refer to no-rewind interfaces. 61Files 62.Pa rct8 63through 64.Pa rct11 65refer to streaming rewind on close interfaces. (Only 9144 type devices 66can stream.) 67Lastly, 68.Pa rct12 69through 70.Pa rct15 71refer to streaming no-rewind interfaces. 72.Sh SEE ALSO 73.Xr mt 1 , 74.Xr tar 1 , 75.Xr tp 1 , 76.Xr mtio 4 . 77.Sh HISTORY 78The 79.Nm \&ct 80driver 81.Ud 82.Sh BUGS 83Read and writes of less than 1024 bytes will not behave as expected. 84