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Annotation of 43BSDTahoe/man/man4/vax/mt.4, revision 1.1.1.1

1.1       root        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: .\"    @(#)mt.4        6.3 (Berkeley) 6/1/86
                      6: .\"
                      7: .TH MT 4 "June 1, 1986"
                      8: .UC 4
                      9: .SH NAME
                     10: mt \- TM78/TU-78 MASSBUS magtape interface
                     11: .SH SYNOPSIS
                     12: .B master mt0 at mba? drive ?
                     13: .br
                     14: .B tape mu0 at mt0 slave 0
                     15: .SH DESCRIPTION
                     16: The tm78/tu-78 combination provides a standard tape drive
                     17: interface as described in
                     18: .IR mtio (4).
                     19: Only 1600 and 6250 bpi are supported; the
                     20: TU-78 runs at 125 ips and autoloads tapes.
                     21: .SH "SEE ALSO"
                     22: mt(1),
                     23: tar(1),
                     24: tp(1),
                     25: mtio(4),
                     26: tm(4),
                     27: ts(4),
                     28: ut(4)
                     29: .SH DIAGNOSTICS
                     30: \fBmu%d: no write ring\fR.  An attempt was made to write on the tape drive
                     31: when no write ring was present; this message is written on the terminal of
                     32: the user who tried to access the tape.
                     33: .PP
                     34: \fBmu%d: not online\fR.  An attempt was made to access the tape while it
                     35: was offline; this message is written on the terminal of the user
                     36: who tried to access the tape.
                     37: .PP
                     38: \fBmu%d: can't change density in mid-tape\fR.  An attempt was made to write
                     39: on a tape at a different density than is already recorded on the tape.
                     40: This message is written on the terminal of the user who tried to switch
                     41: the density.
                     42: .PP
                     43: \fBmu%d: hard error bn%d mbsr=%b er=%x ds=%b\fR.   A tape error occurred
                     44: at block \fIbn\fR; the mt error register and drive status register are
                     45: printed in octal with the bits symbolically decoded.  Any error is
                     46: fatal on non-raw tape; when possible the driver will have retried
                     47: the operation which failed several times before reporting the error.
                     48: .PP
                     49: \fBmu%d: blank tape\fP.
                     50: An attempt was made to read a blank tape (a tape without even
                     51: end-of-file marks).
                     52: .PP
                     53: \fBmu%d: offline\fP.
                     54: During an i/o operation the device was set offline.  If a
                     55: non-raw tape was used in the access it is closed.
                     56: .SH BUGS
                     57: If any non-data error is encountered on non-raw tape,
                     58: it refuses to do anything more until closed.
                     59: .PP
                     60: Because 800 bpi tapes are not supported, the numbering of minor devices
                     61: is inconsistent with triple-density tape units.
                     62: Unit 0 is drive 0, 1600 bpi.

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