mtc from netbsd

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+.\"	$OpenBSD: mtc.4,v 1.1 2003/03/06 21:12:12 mickey Exp $
+.\"	$NetBSD: mtc.4,v 1.4 2001/04/11 19:23:01 wiz Exp $
+.\"
+.\" Copyright (c) 1980, 1987, 1991 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. 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: @(#)uda.4	6.6 (Berkeley) 3/27/91
+.\"
+.Dd March 27, 1991
+.Dt MTC 4 vax
+.Os
+.Sh NAME
+.Nm mtc
+.Nd
+.Tn Unibus
+MSCP tape controller driver
+.Sh SYNOPSIS
+.Cd "mtc0 at uba? csr 0174500"
+.Cd "mscpbus* at mtc?"
+.Sh DESCRIPTION
+The
+.Nm
+driver is for Unibus
+tape controllers that use MSCP. Among these controllers are:
+.Pp
+.Bl -tag -width -offset indent -compact
+.It DEC KLESI-U Unibus ctlr
+.It DEC TK50 Q22 bus ctlr
+.El
+.Pp
+The
+.Nm
+communicates with the host through
+a packet protocol known as the Mass Storage Control Protocol
+.Pq Tn MSCP .
+Consult the file
+.Aq Pa mscp/mscp.h
+for a detailed description of this protocol.
+.Sh SEE ALSO
+.Xr intro 4
+.Xr mscpbus 4
+.Sh HISTORY
+The
+.Nm
+driver appeared in
+.Ox 2.1 .