projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| be46310c KM |
1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement | |
| 3 | .\" specifies the terms and conditions for redistribution. | |
| 4 | .\" | |
| 5 | .\" @(#)tu.4 4.1 (Berkeley) %G% | |
| 6 | .\" | |
| 7 | .TH TU 4 10/8/81 | |
| 8 | .UC 4 | |
| 9 | .SH NAME | |
| 10 | tu \- console TU58 interface | |
| 11 | .SH DESCRIPTION | |
| 12 | .PP | |
| 13 | This is a simple interface to the TU58 | |
| 14 | cassette tape unit, which is part of the console | |
| 15 | subsytem for VAX-11/750's. | |
| 16 | Access is given to the entire | |
| 17 | tape consisting of 1024 blocks of 512 bytes. | |
| 18 | .PP | |
| 19 | The TU58 behaves like a disk but has only a block interface (no raw). | |
| 20 | The cassette is commonly accessed via the | |
| 21 | .IR arff (8) | |
| 22 | command, using the `m' flag. | |
| 23 | .SH FILES | |
| 24 | /dev/floppy | |
| 25 | .SH SEE ALSO | |
| 26 | arff(8) | |
| 27 | .SH DIAGNOSTICS | |
| 28 | Lots, mostly cryptic. Read the driver. | |
| 29 | .SH BUGS | |
| 30 | The driver is very unreliable due to the nature of the TU58 interface. | |
| 31 | The TU58 should be used only when the system is in single-user mode, | |
| 32 | since it is often necessary to reboot the system to unhang the process | |
| 33 | accessing the TU58. |