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ex.4 revision 1.9 
 $NetBSD: ex.4,v 1.9 2001/09/11 22:52:52 wiz Exp $

 Copyright (c) 1999 The NetBSD Foundation, Inc.
 All rights reserved.

.Dd June 2, 2001
.Dt EX 4
.Os
.Sh NAME
.Nm ex
.Nd driver for
.Tn 3Com
Fast EtherLink XL (3c900, 3c905, 3c980) and similar
.Tn PCI
bus
and
.Tn cardbus
.Tn Ethernet
interfaces
.Sh SYNOPSIS
.Cd "ex* at cardbus? dev ? function ?"
.Cd "ex* at pci? dev ? function ?"
.Sh HARDWARE
.Tn 3Com
.Tn Ethernet
and
.Tn Fast Ethernet
cards supported by the
.Nm
driver include:

p
l -item -compact t 3c450-TX 10/100 Ethernet
t 3c555 MiniPCI 10/100 Ethernet
t 3c556 MiniPCI 10/100 Ethernet
t 3c556B MiniPCI 10/100 Ethernet
t 3c575-TX Ethernet
t 3c575B-TX Ethernet
t 3c575CT Ethernet
t 3c900-TPO Ethernet
t 3c900-COMBO Ethernet
t 3c900B-TPC Ethernet
t 3c900B-TPO Ethernet
t 3c900B-COMBO Ethernet
t 3c905-T4 10/100 Ethernet
t 3c905-TX 10/100 Ethernet
t 3c905B-COMBO 10/100 Ethernet
t 3c905B-FX 10/100 Ethernet
t 3c905B-T4 10/100 Ethernet
t 3c905B-TX 10/100 Ethernet
t 3c980 Server Adapter 10/100 Ethernet
t 3c980C-TXM 10/100 Ethernet
t 3cSOHO100-TX 10/100 Ethernet
.El

p
All versions of the Etherlink XL (except the older 3c900 and 3c905)
support IPv4/TCP/UDP checksumming in hardware. The
.Nm
driver supports this feature of the chip. See
.Xr ifconfig 8
for information on how to enable this feature.
.Sh MEDIA SELECTION
See
.Xr ifmedia 4 .
.Sh DIAGNOSTICS
l -diag t "%s: adapter failure (%x)" t "%s: can't allocate download descriptors, error = %d" t "%s: can't allocate or map rx buffers" t "%s: can't allocate upload descriptors, error = %d" t "%s: can't create download desc. DMA map, error = %d" t "%s: can't create rx DMA map %d, error = %d" t "%s: can't create tx DMA map %d, error = %d" t "%s: can't create upload desc. DMA map, error = %d" t "%s: can't load download desc. DMA map, error = %d" t "%s: can't load mbuf chain, error = %d" t "%s: can't load rx buffer, error = %d" t "%s: can't load upload desc. DMA map, error = %d" t "%s: can't map download descriptors, error = %d" t "%s: can't map upload descriptors, error = %d" t "%s: fifo underrun (%x) @%d" t "%s: jabber (%x)" t "%s: receive stalled" t "%s: too many segments, " t "%s: uplistptr was 0" .El
.Sh SEE ALSO
.Xr cardbus 4 ,
.Xr exphy 4 ,
.Xr ifmedia 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr ifconfig 8

p

a http://www.3com.com/