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+.\"     $OpenBSD: hme.4,v 1.1 1998/07/13 02:59:52 jason Exp $
+.\"
+.\" Copyright (c) 1998 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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Jason L. Wright
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" 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 July 12, 1998
+.Dt HME 4 sparc
+.Os
+.Sh NAME
+.Nm hme
+.Nd SPARC National DP83840 ethernet interface
+.Sh SYNOPSIS
+.Cd "hme* at sbus? slot ? offset ?                 " Pq "sun4c/sun4m"
+.Sh DESCRIPTION
+The 
+.Nm
+interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the
+.Tn National
+DP83840
+Ethernet chip set.  The 
+.Nm 
+is found on the SunSwift and Sun QuadFastEthernet boards.  
+.Pp
+Each of the host's network addresses
+is specified at boot time with an
+.Dv SIOCSIFADDR
+.Xr ioctl 2 .
+The
+.Nm
+interface employs the address resolution protocol described in
+.Xr arp 4
+to dynamically map between Internet and Ethernet addresses on the local
+network.
+.Pp
+When a
+.Nm
+interface is brought up, it will attempt to auto-negotiate the link speed.
+The speeds, in order of attempt, are:
+100Mb/s Full Duplex, 100Mb/s Half Duplex, 10 Mb/s Full Duplex, and
+10 Mb/s Half Duplex.
+.Sh SEE ALSO
+.Xr ie 4 ,
+.Xr le 4 ,
+.Xr intro 4 ,
+.Xr inet 4 ,
+.Xr arp 4
+.Sh BUGS
+The autonegotiation process is not as robust as it should be.
+.Sh HISTORY
+Support for the
+.Nm
+first appeared in
+.Ox 2.3