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1.1       root        1: .\" Copyright (c) 1986 The Regents of the University of California.
                      2: .\" All rights reserved.
                      3: .\"
                      4: .\" Redistribution and use in source and binary forms are permitted provided
                      5: .\" that: (1) source distributions retain this entire copyright notice and
                      6: .\" comment, and (2) distributions including binaries display the following
                      7: .\" acknowledgement:  ``This product includes software developed by the
                      8: .\" University of California, Berkeley and its contributors'' in the
                      9: .\" documentation or other materials provided with the distribution and in
                     10: .\" all advertising materials mentioning features or use of this software.
                     11: .\" Neither the name of the University nor the names of its contributors may
                     12: .\" be used to endorse or promote products derived from this software without
                     13: .\" specific prior written permission.
                     14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     17: .\"
                     18: .\"    @(#)ex.4        6.5 (Berkeley) 6/23/90
                     19: .\"
                     20: .TH EX 4 "June 23, 1990"
                     21: .UC 5
                     22: .SH NAME
                     23: ex \- Excelan 10 Mb/s Ethernet interface
                     24: .SH SYNOPSIS
                     25: .B "device ex0 at uba0 csr 164000 vector excdint"
                     26: .SH DESCRIPTION
                     27: The
                     28: .I ex
                     29: interface provides access to a 10 Mb/s Ethernet network through
                     30: an Excelan controller used as a link-layer interface.
                     31: .PP
                     32: Each of the host's network addresses
                     33: is specified at boot time with an SIOCSIFADDR
                     34: ioctl.  The
                     35: .I ex
                     36: interface employs the address resolution protocol described in
                     37: .IR arp (4)
                     38: to dynamically map between Internet and Ethernet addresses on the local
                     39: network.
                     40: .PP
                     41: The interface normally tries to use a ``trailer'' encapsulation
                     42: to minimize copying data on input and output.
                     43: The use of trailers is negotiated with ARP.
                     44: This negotiation may be disabled, on a per-interface basis,
                     45: by setting the IFF_NOTRAILERS
                     46: flag with an SIOCSIFFLAGS ioctl.
                     47: .SH DIAGNOSTICS
                     48: \fBex%d: HW %c.%c, NX %c.%c, hardware address %s\fP.
                     49: This provides firmware revisions levels, and is expected during
                     50: autoconfiguration.
                     51: .PP
                     52: \fBex%d: can't initialize\fP.
                     53: There was a failure in allocating unibus resources for the device.
                     54: .PP
                     55: \fBex%d: configuration failed; cc = %x\fP.
                     56: The hardware indicated an error when trying to initalize itself.
                     57: The error code returned is described at length in the device
                     58: Reference Manual.
                     59: .PP
                     60: \fBex%d: receive error %b\fP.  The hardware indicated an error
                     61: in reading a packet from the cable.
                     62: Specific Error bits are provided
                     63: .PP
                     64: \fBex%d: transmit error %b\fP.  The hardware indicated an error
                     65: in transmitting a packet to the cable or an illegally sized packet.
                     66: Specific Error bits are provided
                     67: .PP
                     68: \fBex%d: can't handle af%d\fP.  The interface was handed
                     69: a message with addresses formatted in an unsuitable address
                     70: family; the packet was dropped.
                     71: .SH SEE ALSO
                     72: netintro(4), inet(4), arp(4)

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