pccom page from grr

2 files changed, 124 insertions, 2 deletions

diff --git a/share/man/man4/man4.i386/Makefile b/share/man/man4/man4.i386/Makefile
index 06f6137f371..d5868d89814 100644
--- a/share/man/man4/man4.i386/Makefile
+++ b/share/man/man4/man4.i386/Makefile
@@ -1,10 +1,10 @@
-#	$OpenBSD: Makefile,v 1.13 1997/03/28 22:53:44 millert Exp $
+#	$OpenBSD: Makefile,v 1.14 1997/05/28 21:44:51 deraadt Exp $
 #	from: @(#)Makefile	5.1 (Berkeley) 2/12/91
 #	Id: Makefile,v 1.4 1995/12/14 05:41:38 deraadt Exp $
 
 MAN=	intro.4 aha.4 ahb.4 aic.4 aria.4 ast.4 autoconf.4 boca.4 bt.4
 MAN+=	com.4 cy.4 ed.4 ep.4 fdc.4 iy.4 lms.4 lpt.4 mcd.4 mem.4 mms.4
-MAN+=	npx.4 pctr.4 pms.4 rtfps.4 scd.4 sea.4 speaker.4 uha.4 wd.4
+MAN+=	npx.4 pccom.4 pctr.4 pms.4 rtfps.4 scd.4 sea.4 speaker.4 uha.4 wd.4
 MAN+=	eg.4 el.4 ie.4 joy.4 le.4 wt.4
 MAN+=	gus.4 pss.4 sb.4 wss.4
 
diff --git a/share/man/man4/man4.i386/pccom.4 b/share/man/man4/man4.i386/pccom.4
new file mode 100644
index 00000000000..c7149f6981b
--- /dev/null
+++ b/share/man/man4/man4.i386/pccom.4
@@ -0,0 +1,122 @@
+.\"	$OpenBSD: pccom.4,v 1.1 1997/05/28 21:44:52 deraadt Exp $
+.\"	$OpenBSD: pccom.4,v 1.1 1997/05/28 21:44:52 deraadt Exp $
+.\"	$NetBSD: com.4,v 1.5 1996/03/16 00:07:08 thorpej 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
+.\"
+.Dd May 20, 1997
+.Dt PCCOM 4 i386
+.Os
+.Sh NAME
+.Nm pccom
+.Nd
+enhanced serial communications interface
+.Sh SYNOPSIS
+.Cd "pccom0 at isa? port" 0x3f8 irq 4
+.Cd "pccom1 at isa? port" 0x2f8 irq 3
+.Cd "pccom2 at isa? port" 0x3e8 irq 5
+.Cd "pccom3 at isa? port" 0x2e8 irq 9
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for NS8250-, NS16450-, and NS16550 compatible
+.Tn EIA
+.Tn RS-232C
+.Pf ( Tn CCITT
+.Tn V.28 )
+communications interfaces.  The NS8250 and NS16450 have single character
+buffers, and the NS16550 has a 16 character buffer.
+.Pp
+The
+.Nm
+driver is an enhanced version of the standard
+.Xr isa/com 4
+driver, and implements a large software buffer at the driver level
+to back up the small hardware buffers implemented by the standard serial
+interface devices.
+This can provide a substantial reduction in the number of "silo overflow"
+errors when using higher speed modems.  The
+.Nm
+driver also includes some support for
+.Tn PCMCIA
+serial interfaces, multi-port serial cards and serial consoles.
+.Pp
+Input and output for each line may set to one of following baud rates;
+50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600,
+19200, 38400, 57600, or 115200, or any other baud rate which is a factor
+of 115200.
+.Sh FILES
+.Bl -tag -width Pa
+.It Pa /dev/tty00
+.It Pa /dev/tty01
+.It Pa /dev/tty02
+.It Pa /dev/tty03
+.El
+.Sh DIAGNOSTICS
+.Bl -diag
+.It pccom%d: %d silo overflows
+The input
+.Dq silo
+has overflowed and incoming data has been lost.
+.It pccom%d: weird interrupt: iir=%x
+The device has generated an unexpected interrupt with the code listed.
+.El
+.Sh SEE ALSO
+.Xr ast 4 ,
+.Xr rtfps 4 ,
+.Xr isa/com 4 ,
+.Xr tty 4
+.Sh HISTORY
+The
+.Nm
+driver was derived from the original
+.Xr isa/com 4
+driver by Onno van der Linden.  That driver was
+derived from the
+.Nm HP9000/300
+.Nm dca
+driver.
+.Sh NOTES
+The interrupt assignments above for pccom3 and pccom4 often conflict the
+defaults used for other devices such as network cards.  If you plan to
+use these devices you must review your system configuration and the
+interrupt options available to select non-conflicting inteterrupt assignments.
+.Sh BUGS
+Data loss is possible on busy systems with unbuffered UARTs at high speed.
+.Pp
+The name of this driver is a holdover from
+.Nm DOS .