if it is isa/pci/pcmcia, and found on more machines, move it up a bit

1 files changed, 120 insertions, 0 deletions

diff --git a/share/man/man4/com.4 b/share/man/man4/com.4
new file mode 100644
index 00000000000..af46672ccf4
--- /dev/null
+++ b/share/man/man4/com.4
@@ -0,0 +1,120 @@
+.\"	$OpenBSD: com.4,v 1.1 2000/05/20 17:19:51 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 July 12, 1998
+.Dt COM 4 i386
+.Os
+.Sh NAME
+.Nm com
+.Nd
+serial communications interface
+.Sh SYNOPSIS
+.Cd "com0 at isa? port" \&"IO_COM1\&" irq 4
+.Cd "com1 at isa? port" \&"IO_COM2\&" irq 3
+.Pp
+.Cd "pccom0 at isa? port" \&"IO_COM1\&" irq 4
+.Cd "pccom1 at isa? port" \&"IO_COM2\&" irq 3
+.Cd "pccom* at isapnp?"
+.Sh DESCRIPTION
+The
+.Nm com
+and
+.Nm pccom
+drivers provide support for NS8250-, NS16450-, NS16550-, ST16650-, and
+TI16750-based
+.Tn EIA
+.Tn RS-232C
+.Pf ( Tn CCITT
+.Tn V.28 )
+communications interfaces.
+The
+.Nm pccom
+driver also supports the XR16850 UART.
+.Pp
+The NS8250 and NS16450 have single
+character buffers, the NS16550 has a 16 character buffer, while
+the ST16650 has a 32 character buffer, and the TI16750 has a 64 character
+buffer.  The XR16850 has a 128 character buffer.
+.Pp
+The
+.Nm com
+and
+.Nm pccom
+drivers are mutually exclusive; both may not be present in the same system at
+the same time.  Attempting to compile such a system will fail.
+.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/cua00
+.It Pa /dev/cua01
+.El
+.Sh DIAGNOSTICS
+.Bl -diag
+.It com%d: %d silo overflows
+The input
+.Dq silo
+has overflowed and incoming data has been lost.
+.It com%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 tty 4
+.Sh HISTORY
+The
+.Nm
+driver was originally derived from the
+.Nm HP9000/300
+.Nm dca
+driver and is
+.Ud
+.Sh BUGS
+Data loss is possible on busy systems with unbuffered UARTs at high speed.
+.Pp
+The name of this driver and the constants which define the locations
+of the various serial ports are holdovers from
+.Nm DOS .