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     de — DEC DC21x4x Ethernet device driver


     To compile this driver into the kernel, place the following line in your kernel
     configuration file:

           device de

     Alternatively, to load the driver as a module at boot time, place the following line in



     The de driver is not present in FreeBSD 13.0 and later.  See for more information.


     The de driver provides support for the Ethernet adapters based on the Digital Equipment
     DC21x4x based self-contained Ethernet and Fast Ethernet chips.

     The de driver supports the following media types:

     autoselect       Enable autoselection of the media type and options

     10baseT/UTP      Set 10Mbps operation on the 10baseT port

     10base2/BNC      Set 10Mbps operation on the BNC port

     10base5/AUI      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

     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.

     Use the ifconfig(8) command and in particular the -m flag to list the supported media types
     for your particular card.

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


     Adapters supported by the de driver include:

        Adaptec ANA-6944/TX
        Cogent EM100FX and EM440TX
        Corega FastEther PCI-TX
        D-Link DFE-500TX
        DEC DE435, DEC DE450, and DEC DE500
        I-O DATA LA2/T-PCI
        SMC Etherpower 8432, 9332 and 9334
        ZNYX ZX3xx


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

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

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

     de%d: not configured; 21040 pass 2.0 required (%d.%d found)
     de%d: not configured; 21140 pass 1.1 required (%d.%d found)  Certain revisions of the
     chipset are not supported by this driver.


     altq(4), arp(4), netintro(4), ng_ether(4), ifconfig(8)


     The de device driver was written by Matt Thomas.  This manual page was written by David E.