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Annotation of 43BSDTahoe/man/man4/vax/ut.4, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 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: .\"    @(#)ut.4        6.1 (Berkeley) 5/15/85
        !             6: .\"
        !             7: .TH UT 4 "May 15, 1985"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: ut \- UNIBUS TU45 tri-density tape drive interface
        !            11: .SH SYNOPSIS
        !            12: .B "controller ut0 at uba0 csr 0172440 vector utintr"
        !            13: .br
        !            14: .B "tape tj0 at ut0 drive 0"
        !            15: .SH DESCRIPTION
        !            16: The 
        !            17: .I ut
        !            18: interface provides access to a standard tape drive interface as
        !            19: describe in 
        !            20: .IR mtio (4).
        !            21: Hardware implementing this on the VAX is typified by the System
        !            22: Industries SI 9700 tape subsystem.  Tapes may be read or written
        !            23: at 800, 1600, and 6250 bpi.
        !            24: .SH "SEE ALSO"
        !            25: mt(1),
        !            26: mtio(4)
        !            27: .SH DIAGNOSTICS
        !            28: .BR "tj%d: no write ring" .
        !            29: An attempt was made to write on the tape drive
        !            30: when no write ring was present; this message is written on the terminal of
        !            31: the user who tried to access the tape.
        !            32: .PP
        !            33: .BR "tj%d: not online" .
        !            34: 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: .BR "tj%d: can't change density in mid-tape" .
        !            39: An attempt was made to write
        !            40: on a tape at a different density than is already recorded on the tape.
        !            41: This message is written on the terminal of the user who tried to switch
        !            42: the density.
        !            43: .PP
        !            44: .BR "ut%d: soft error bn%d cs1=%b er=%b cs2=%b ds=%b" .
        !            45: The formatter indicated a corrected error at a density other
        !            46: than 800bpi.  The data transferred is assumed to be correct.
        !            47: .PP
        !            48: .BR "ut%d: hard error bn%d cs1=%b er=%b cs2=%b ds=%b" .
        !            49: A tape error occurred
        !            50: at block
        !            51: .IR bn .
        !            52: Any error is
        !            53: fatal on non-raw tape; when possible the driver will have retried
        !            54: the operation which failed several times before reporting the error.
        !            55: .PP
        !            56: .BR "tj%d: lost interrupt" .
        !            57: A tape operation did not complete
        !            58: within a reasonable time, most likely because the tape was taken
        !            59: off-line during rewind or lost vacuum.  The controller should, but does not,
        !            60: give an interrupt in these cases.  The device will be made available
        !            61: again after this message, but any current open reference to the device
        !            62: will return an error as the operation in progress aborts.
        !            63: .SH BUGS
        !            64: If any non-data error is encountered on non-raw tape, it refuses to do anything
        !            65: more until closed.

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