1.\" $NetBSD: ex.4,v 1.9 2001/08/18 14:37:45 wiz Exp $ 2.\" 3.\" Copyright (c) 1986, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)ex.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt EX 4 vax 38.Os 39.Sh NAME 40.Nm ex 41.Nd Excelan 10 Mb/s Ethernet interface 42.Sh SYNOPSIS 43.Cd "ex0 at uba0 csr 164000 vector excdint" 44.Sh DESCRIPTION 45NOTE: This driver has not been ported from 46.Bx 4.4 47yet. 48.Pp 49The 50.Nm ex 51interface provides access to a 10 Mb/s Ethernet network through 52an Excelan controller used as a link-layer interface. 53.Pp 54Each of the host's network addresses 55is specified at boot time with an 56.Dv SIOCSIFADDR 57.Xr ioctl 2 . 58The 59.Nm ex 60interface employs the address resolution protocol described in 61.Xr arp 4 62to dynamically map between Internet and Ethernet addresses on the local 63network. 64.Pp 65The interface normally tries to use a 66.Dq trailer 67encapsulation 68to minimize copying data on input and output. 69The use of trailers is negotiated with 70.Tn ARP . 71This negotiation may be disabled, on a per-interface basis, 72by setting the 73.Dv IFF_NOTRAILERS 74flag with an 75.Dv SIOCSIFFLAGS 76.Xr ioctl 2 . 77.Sh DIAGNOSTICS 78.Bl -diag 79.It "ex%d: HW %c.%c, NX %c.%c, hardware address %s." 80This provides firmware revisions levels, and is expected during 81autoconfiguration. 82.Pp 83.It ex%d: can't initialize. 84There was a failure in allocating unibus resources for the device. 85.Pp 86.It "ex%d: configuration failed; cc = %x." 87The hardware indicated an error when trying to initialize itself. 88The error code returned is described at length in the device 89Reference Manual. 90.Pp 91.It ex%d: receive error %b. 92The hardware indicated an error 93in reading a packet from the cable. 94Specific Error bits are provided 95.Pp 96.It ex%d: transmit error %b. 97The hardware indicated an error 98in transmitting a packet to the cable or an illegally sized packet. 99Specific Error bits are provided 100.Pp 101.It ex%d: can't handle af%d. 102The interface was handed 103a message with addresses formatted in an unsuitable address 104family; the packet was dropped. 105.El 106.Sh SEE ALSO 107.Xr netintro 4 , 108.Xr inet 4 , 109.Xr arp 4 110.Sh HISTORY 111The 112.Nm 113driver appeared in 114.Bx 4.3 . 115