101 lines
3.6 KiB
Groff
101 lines
3.6 KiB
Groff
.\"
|
|
.\" Copyright (c) 1995 John Hay. 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by John Hay.
|
|
.\" 4. Neither the name of the author nor the names of any co-contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY John Hay ``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 John Hay 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 November 19, 1995
|
|
.Dt AR 4 i386
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ar
|
|
.Nd
|
|
synchronous Arnet device driver.
|
|
.Sh SYNOPSIS
|
|
.Cd "device ar0 at isa? port 0x300 irq 10 iomem 0xd0000"
|
|
.Cd "device ar1 at isa? port 0x310 irq 11 iomem 0xd0000"
|
|
.Pp
|
|
.Cd "pseudo-device sppp"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm ar
|
|
driver supports the Arnet SYNC/570i ISA cards that is based on the
|
|
HD64570 chip. Both the 2 and 4 port cards is supported and auto detected.
|
|
.Pp
|
|
Line speeds of up to 2Mbps is possible. At this speed about 85% of the
|
|
bandwidth is usable with 486DX processors.
|
|
.Pp
|
|
The standard
|
|
.Tn FreeBSD
|
|
sppp code is used for the link level layer. The
|
|
default protocol used is PPP. The Cisco HDLC protocol can be used by
|
|
adding
|
|
.Ar link2
|
|
to
|
|
.Xr ifconfig 8 .
|
|
.Sh NUMBERING
|
|
Only one line for each card is needed in the kernel configuration file.
|
|
The first card's ports will be installed from ar0. The numbering of the
|
|
next card will continue where the first stopped, eg. if the first card
|
|
is a two port card it will use ar0 and ar1. The next card will then
|
|
start at ar2.
|
|
.Pp
|
|
The card only supports IRQ 3, 5, 7, 10, 11, 12 and 15.
|
|
.Pp
|
|
The iomem area is a 16Kb block and must start at a 16Kb boundary.
|
|
.Pp
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "ar%d: Warning illegal interrupt %d."
|
|
The card cannot use the specified interrupt. Choose a different one.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width /sys/i386/isa/ic/hd64570.h -compact
|
|
.It Pa /sys/i386/isa/ic/hd64570.h
|
|
.It Pa /sys/i386/isa/if_arregs.h
|
|
.It Pa /sys/i386/isa/if_ar.c
|
|
.El
|
|
.Sh BUGS
|
|
At the moment only the V.35 and X.21 interfaces is tested. The others
|
|
may need tweaks to the clock selection code.
|
|
.Pp
|
|
The code can probably stand some optimizing.
|
|
.Pp
|
|
There must be lots because this code is still very green. Please report
|
|
them to jhay@mikom.csir.co.za
|
|
.Sh SEE ALSO
|
|
.Xr cx 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm ar
|
|
device driver was written by
|
|
.An John Hay Aq jhay@mikom.csir.co.za .
|