date and time created 86/02/17 17:59:27 by sklower

SCCS-vsn: share/man/man4/man4.vax/ex.4 6.1

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+.\" Copyright (c) 1986 Regents of the University of California.
+.\" All rights reserved.  The Berkeley software License Agreement
+.\" specifies the terms and conditions for redistribution.
+.\"
+.\"    @(#)ex.4        6.1 (Berkeley) %G%
+.\"
+.TH EX 4 ""
+.UC 5
+.SH NAME
+ex \- Excelan 10 Mb/s Ethernet interface
+.SH SYNOPSIS
+.B "device ex0 at uba0 csr 164000 vector exrint excint"
+.SH DESCRIPTION
+The
+.I ex
+interface provides access to a 10 Mb/s Ethernet network through
+an Excelan controller.
+.PP
+The host's Internet address is specified at boot time with an SIOCSIFADDR
+ioctl.  The
+.I ex
+interface employs the address resolution protocol described in
+.IR arp (4P)
+to dynamically map between Internet and Ethernet addresses on the local
+network.
+.PP
+The interface normally tries to use a ``trailer'' encapsulation
+to minimize copying data on input and output.  This may be
+disabled, on a per-interface basis, by setting the IFF_NOTRAILERS
+flag with an SIOCSIFFLAGS ioctl.
+.SH DIAGNOSTICS
+\fBex%d: HW %c.%c, NX %c.%c, hardware address %s\fP.
+This provides firmware revisions levels, and is expected during
+autoconfiguration.
+.PP
+\fBex%d: can't initialize\fP.
+There was a failure in allocating unibus resources for the device.
+.PP
+\fBex%d: configuration failed; cc = %x\fP.
+The hardware indicated an error when trying to initalize itself.
+The error code returned is described at length in the device
+Reference Manual.
+.PP
+\fBex%d: receive error %b\fP.  The hardware indicated an error
+in reading a packet from the cable.
+Specific Error bits are provided
+.PP
+\fBex%d: transmit error %b\fP.  The hardware indicated an error
+in transmitting a packet to the cable or an illegally sized packet.
+Specific Error bits are provided
+.PP
+\fBex%d: can't handle af%d\fP.  The interface was handed
+a message with addresses formatted in an unsuitable address
+family; the packet was dropped.
+.SH SEE ALSO
+intro(4N), inet(4F), arp(4P)
+.SH BUGS