summaryrefslogtreecommitdiff
path: root/static/netbsd/man4/ut.4
diff options
context:
space:
mode:
authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
commit253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch)
treeadf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man4/ut.4
parenta9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff)
docs: Added All NetBSD Manuals
Diffstat (limited to 'static/netbsd/man4/ut.4')
-rw-r--r--static/netbsd/man4/ut.4105
1 files changed, 105 insertions, 0 deletions
diff --git a/static/netbsd/man4/ut.4 b/static/netbsd/man4/ut.4
new file mode 100644
index 00000000..1be7b79b
--- /dev/null
+++ b/static/netbsd/man4/ut.4
@@ -0,0 +1,105 @@
+.\" $NetBSD: ut.4,v 1.13 2017/08/01 11:11:17 wiz Exp $
+.\"
+.\" Copyright (c) 1983, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" from: @(#)ut.4 8.1 (Berkeley) 6/5/93
+.\"
+.Dd February 17, 2017
+.Dt UT 4 vax
+.Os
+.Sh NAME
+.Nm ut
+.Nd
+.Tn UNIBUS TU45
+tri-density tape drive interface
+.Sh SYNOPSIS
+.Cd "ut0 at uba0 csr 0172440 vector utintr"
+.Cd "tj0 at ut0 drive 0"
+.Sh DESCRIPTION
+NOTE: This driver has not been ported from
+.Bx 4.4
+yet.
+.Pp
+The
+.Nm ut
+interface provides access to a standard tape drive interface as
+describe in
+.Xr vax/mtio 4 .
+Hardware implementing this on the
+.Tn VAX
+is typified by the System
+Industries
+.Tn SI
+9700 tape subsystem.
+Tapes may be read or written at 800, 1600, and 6250
+.Tn BPI .
+.Sh DIAGNOSTICS
+.Bl -diag
+.It tj%d: no write ring.
+An attempt was made to write on the tape drive
+when no write ring was present; this message is written on the terminal of
+the user who tried to access the tape.
+.It tj%d: not online.
+An attempt was made to access the tape while it
+was offline; this message is written on the terminal of the user
+who tried to access the tape.
+.It tj%d: can't change density in mid-tape.
+An attempt was made to write
+on a tape at a different density than is already recorded on the tape.
+This message is written on the terminal of the user who tried to switch
+the density.
+.It "ut%d: soft error bn%d cs1=%b er=%b cs2=%b ds=%b."
+The formatter indicated a corrected error at a density other
+than 800bpi.
+The data transferred is assumed to be correct.
+.It "ut%d: hard error bn%d cs1=%b er=%b cs2=%b ds=%b."
+A tape error occurred
+at block
+.It bn.
+Any error is
+fatal on non-raw tape; when possible the driver will have retried
+the operation which failed several times before reporting the error.
+.It tj%d: lost interrupt.
+A tape operation did not complete
+within a reasonable time, most likely because the tape was taken
+off-line during rewind or lost vacuum.
+The controller should, but does not, give an interrupt in these cases.
+The device will be made available
+again after this message, but any current open reference to the device
+will return an error as the operation in progress aborts.
+.El
+.Sh SEE ALSO
+.Xr vax/mt 1 ,
+.Xr vax/mtio 4
+.Sh HISTORY
+The
+.Nm
+driver appeared in
+.Bx 4.2 .
+.Sh BUGS
+May hang if a physical error (non-data) occurs.