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-.\"	$OpenBSD: boca.4,v 1.6 1999/07/09 13:35:43 aaron Exp $
-.\"
-.\" Copyright (c) 1990, 1991 The Regents of the University of California.
-.\" All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" the Systems Programming Group of the University of Utah Computer
-.\" Science Department.
-.\" 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: @(#)dca.4	5.2 (Berkeley) 3/27/91
-.\"	from: Id: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
-.\"
-.Dd January 3, 1995
-.Dt BOCA 4 i386
-.Os
-.Sh NAME
-.Nm boca
-.Nd
-multiplexing serial communications interface
-.Sh SYNOPSIS
-For 4-port BB1004 boards:
-.Pp
-.Cd "boca0 at isa? port 0x100 irq 5"
-.Cd "com* at boca? slave ?"
-.Pp
-For 8-port BB1008 boards:
-.Pp
-.Cd "boca0 at isa? port 0x100 irq 5"
-.Cd "com* at boca? slave ?"
-.Pp
-For 16-port BB2016 boards:
-.Pp
-.Cd "boca0 at isa? port 0x100 irq 5"
-.Cd "boca1 at isa? port 0x140 irq 5"
-.Cd "com* at boca? slave ?"
-.Pp
-(The BB2016 is functionally equivalent to two BB1008 boards,
-and is configured as such.)
-.Sh DESCRIPTION
-The
-.Nm boca
-driver provides support for BOCA Research BB1004, BB1008 and BB2016
-boards that multiplex together up to four, eight or sixteen
-.Tn EIA
-.Tn RS-232C
-.Pf ( Tn CCITT
-.Tn V.28 )
-communications interfaces.
-.Pp
-Each
-.Nm
-device is the master device for up to eight
-.Nm com
-devices.  The kernel configuration specifies these
-.Nm com
-devices as slave devices of the
-.Nm
-device, as shown in the synopsis.  The slave ID given for each
-.Nm com
-device determines which bit in the interrupt multiplexing register is
-tested to find interrupts for that device.
-The
-.Tn port
-specification for the
-.Nm
-device is used to compute the base addresses for the
-.Nm com
-subdevices and the port for the interrupt multiplexing register.
-.Sh FILES
-.Bl -tag -width Pa
-.It Pa /dev/tty??
-.El
-.Sh SEE ALSO
-.Xr com 4
-.Sh HISTORY
-The
-.Nm
-driver was written by Charles Hannum, based on the
-.Nm ast
-driver and source code from David Muir Sharnoff.  David wishes to
-acknowledge the assistance of Jason Venner in determining how to use
-the BOCA boards.