mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
126 lines
3.4 KiB
Groff
126 lines
3.4 KiB
Groff
.\"
|
|
.\" Copyright (c) 2004 Tom Rhodes
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 18, 2005
|
|
.Dt RC 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm rc
|
|
.Nd RISCom/8 multiport card
|
|
.Sh SYNOPSIS
|
|
.Cd device isa
|
|
.Cd device rc
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Tn RISCom/8
|
|
is an eight port
|
|
.Tn ISA
|
|
.Tn RS-232C
|
|
communications multiplexer with a built in
|
|
.Tn RISC
|
|
processor.
|
|
It uses a block of sixteen
|
|
.Tn I/O
|
|
ports in the range 0x200 to 0x3f0 selectable by on-board
|
|
switches or jumpers.
|
|
The block must be aligned on a sixteen port boundary.
|
|
The jumper-selectable hardware interrupt level may be set to
|
|
be detected during system
|
|
initialization using settings found in the
|
|
.Pa /boot/device.hints
|
|
file.
|
|
.Pp
|
|
This driver is mostly based on the Cirrus Logic CL-CD180 driver.
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver provides support for the
|
|
.Tn SDL
|
|
Communications
|
|
.Tn RISCom/8
|
|
boards.
|
|
.Sh DIAGNOSTICS
|
|
The following driver specific error messages
|
|
may be reported:
|
|
.Bl -diag
|
|
.It "rc%d channel%d: interrupt-level buffer overflow"
|
|
An internal buffer overflow error has occurred on
|
|
the listed channel.
|
|
The
|
|
.Nm
|
|
driver will need to be reloaded to correct this.
|
|
.It "rc%d: Bad char chan %d"
|
|
The channel has obtained a bad set of characters.
|
|
.It "rc%d: Got extra chars chan %d"
|
|
The
|
|
.Nm
|
|
driver got more characters than expected on the channel shown.
|
|
.It "rc%d: data mismatch chan %d ptr %d (%d != %d)"
|
|
Data sent from channel
|
|
.Ar %d
|
|
to the rx buffer was different then expected.
|
|
.It "rc%d: channel %d command timeout, rc.c line: %d"
|
|
A command timeout has occurred on the channel, the
|
|
.Pa src/sys/dev/rc/rc.c
|
|
file can be consulted for more information.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr tty 1 ,
|
|
.Xr ttyname 3 ,
|
|
.Xr sio 4 ,
|
|
.Xr tty 4 ,
|
|
.Xr device.hints 5 ,
|
|
.Xr comcontrol 8 ,
|
|
.Xr getty 8 ,
|
|
.Xr mutex 9 ,
|
|
.Xr splx 9
|
|
.Pp
|
|
.Pa http://www.sdlcomm.com
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver first appeared in
|
|
.Fx 2.0.5 .
|
|
This manual page first appeared in
|
|
.Fx 5.3 .
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Tom Rhodes Aq trhodes@FreeBSD.org .
|
|
.Sh BUGS
|
|
The
|
|
.Nm
|
|
driver code still uses the
|
|
.Xr spl 9
|
|
functions.
|
|
These should be replaced by
|
|
.Xr mutex 9
|
|
functions.
|
|
.Pp
|
|
The various
|
|
.Fn ttyld_*
|
|
functions should be documented.
|