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+.\"     $OpenBSD: txp.4,v 1.23 2008/10/28 06:27:28 brad Exp $
+.\"
+.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net)
+.\" 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 ``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 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.
+.\"
+.Dd $Mdocdate: October 28 2008 $
+.Dt TXP 4
+.Os
+.Sh NAME
+.Nm txp
+.Nd 3Com 3XP Typhoon/Sidewinder (3CR990) 10/100 Ethernet device
+.Sh SYNOPSIS
+.Cd "txp* at pci?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the
+.Tn 3Com
+.Tn Typhoon/Sidewinder
+Fast Ethernet chipset, including the following:
+.Pp
+.Bl -bullet -offset indent -compact
+.It
+3Com 3CR990-TX-95
+.It
+3Com 3CR990-TX-97
+.It
+3Com 3CR990SVR95
+.It
+3Com 3CR990SVR97
+.El
+.Pp
+The
+.Nm
+driver supports IPv4 receive IP/TCP/UDP checksum offload, IPv4
+transmit IP checksum offload, and VLAN tag insertion and stripping.
+.Pp
+The
+.Nm
+driver supports the following media types:
+.Bl -tag -width 100baseTX
+.It Cm autoselect
+Enable autoselection of the media type and options.
+The user can manually override
+the autoselected mode by adding media options to the appropriate
+.Xr hostname.if 5
+file.
+.It Cm 10baseT
+Set 10Mbps operation.
+The
+.Xr ifconfig 8
+.Ic mediaopt
+option can also be used to select either
+.Cm full-duplex
+or
+.Cm half-duplex
+modes.
+.It Cm 100baseTX
+Set 100Mbps (Fast Ethernet) operation.
+The
+.Xr ifconfig 8
+.Ic mediaopt
+option can also be used to select either
+.Cm full-duplex
+or
+.Cm half-duplex
+modes.
+.El
+.Pp
+The
+.Nm
+driver supports the following media options:
+.Bl -tag -width full-duplex
+.It Cm full-duplex
+Force full duplex operation.
+.It Cm half-duplex
+Force half duplex operation.
+.El
+.Pp
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Sh FILES
+The driver needs a firmware file,
+which is loaded on demand when the device is attached:
+.Pp
+.Bl -tag -width Ds -offset indent -compact
+.It Pa /etc/firmware/3c990
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr ifmedia 4 ,
+.Xr intro 4 ,
+.Xr netintro 4 ,
+.Xr pci 4 ,
+.Xr hostname.if 5 ,
+.Xr ifconfig 8
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 2.9 .