New manual pages from NetBSD, revised for FreeBSD slightly

1 files changed, 101 insertions, 0 deletions

diff --git a/share/man/man4/sio.4 b/share/man/man4/sio.4
new file mode 100644
index 0000000..53efb1c
--- /dev/null
+++ b/share/man/man4/sio.4
@@ -0,0 +1,101 @@
+.\" 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: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
+.\"	$Id$
+.\"
+.Dd August 28, 1993
+.Dt SIO 4 i386
+.Os FreeBSD
+.Sh NAME
+.Nm sio
+.Nd
+fast interrupt serial communications interface
+.Sh SYNOPSIS
+.Cd "device sio0 at isa? port" \&"IO_COM1\&" tty irq 4 vector siointr
+.Cd "device sio1 at isa? port" \&"IO_COM2\&" tty irq 3 vector siointr
+.Cd "device sio2 at isa? port" \&"IO_COM3\&" tty irq 5 vector siointr
+.Cd "device sio3 at isa? port" \&"IO_COM4\&" tty irq 9 vector siointr
+.Sh DESCRIPTION
+The
+.Nm sio
+driver provides support for NS8250-, NS16450-, and NS16550-based
+.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
+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.
+.Sh FILES
+.Bl -tag -width Pa
+.It Pa /dev/tty00
+.It Pa /dev/tty01
+.El
+.Sh DIAGNOSTICS
+.Bl -diag
+.It sio%d: silo overflow.
+The single-character input
+.Dq silo
+has overflowed and incoming data has been lost.
+.\".It com%d: weird interrupt: %x.
+.\"The device has generated an unexpected interrupt
+.\"with the code listed.
+.El
+.Sh SEE ALSO
+.Xr tty 4
+.Xr com 4
+.Sh HISTORY
+The
+.Nm
+driver is derived from the
+.Nm HP9000/300
+.Nm dca
+driver and is
+.Ud
+.Sh BUGS
+Data loss is not near as likely on busy systems as they are with the
+.Xr com 4
+driver but they still can occur at very high baud rates on slow systems.
+.Pp
+The constants which define the locations
+of the various seiral ports are holdovers from
+.Nm DOS .
+.Pp
+As usual, you get what you pay for; cheap NS16550 clones
+generally don't work.