DE(4)

NAME
de - DEC DC21x4x (Tulip) 10/100 Ethernet device

SYNOPSIS
de* at pci?

DESCRIPTION
The de device driver supports Ethernet adapters based on the Digital Equipment DC21x4x based self-contained Ethernet chips. This includes, among others, the following models:

Asante
Cogent EM100FX and EM440TX
DEC PCI DE435, EISA DE425, DE450, DE500
older Linksys 10, 10/100
SMC 8432, 9332, 9334
ZNYX ZX3xx

This driver may support other cards based on the 21040 and 21041 Ethernet controllers, or the 21140[A], 21141, 21142, and 21143 Fast Ethernet controllers.

The de driver supports the following media types:

autoselect
    Enable autoselection of the media type and options.

10baseT
    Set 10Mbps operation on the 10baseT port.

10base2
    Set 10Mbps operation on the BNC port.

10base5
    Set 10Mbps operation on the AUI port.

100baseTX
    Set 100Mbps (Fast Ethernet) operation.

100baseFX
    Set 100Mbps operation.

100baseT4
    Set 100Mbps operation (4-pair cat-3 cable).

The de driver supports the following media options:

full-duplex
    Set full duplex operation for UTP port.

For more information on configuring this device, see ifconfig(8). To view a list of media types and options supported by your card try ifconfig <device> media. For example, ifconfig de0 media.

Note that the media types available depend on the particular card in use. Some cards are explicitly programmed to a particular media type by a setup utility and are not changeable.

The old “ifconfig linkN” method of configuration is not supported.

DIAGNOSTICS

de0: waking device from sleep/snooze mode The 21041 and 21140A chips support suspending the operation of the card.

de0: error: desired IRQ of X does not match device's actual IRQ of Y The device probe detected that the board is configured for a different interrupt than the one specified in the kernel configuration file.

de0: not configured; limit of N reached or exceeded There is a limit of 32 de devices allowed in a single machine.

de0: not configured; 21040 pass 2.0 required (X.Y found)

de0: not configured; 21140 pass 1.1 required (X.Y found) Certain revisions of the chipset are not supported by this driver.

SEE ALSO
arp(4), ifmedia(4), intro(4), netintro(4), pci(4), hostname.if(5), ifconfig(8)

AUTHORS
The de device driver was written by Matt Thomas. This manual page was written by David E. O'Brien.

CAVEATS
Since the 21040 is available on both EISA and PCI boards, one must be careful in how one defines the 21040 in the kernel config file.