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EF(4)                    BSD Kernel Interfaces Manual                    EF(4)

NAME
     ef -- 3Com Fast EtherLink ISA (3c515) 10/100 Ethernet device

SYNOPSIS
     ef* at isapnp?
     nsphy* at mii?

DESCRIPTION
     The ef device driver supports the 3Com Fast EtherLink ISA family of Eth-
     ernet cards, and embedded controllers based on the 3Com ``corkscrew''
     EtherLink chips.

     The following media types and options (as given to ifconfig(8)) are sup-
     ported:

           media autoselect
                Enable autoselection of the media type and options (default).

           media 100baseTX mediaopt full-duplex
                Set 100Mbps (Fast Ethernet) operation and force full-duplex
                mode.

           media 100baseTX mediaopt half-duplex
                Set 100Mbps (Fast Ethernet) operation and force half-duplex
                mode.

           media 10baseT mediaopt full-duplex
                Set 10Mbps operation and force full-duplex.

           media 10baseT mediaopt half-duplex
                Set 10Mbps operation and force half-duplex.

     If no media options are present, the ef driver places the card into
     autoselect mode.

     For more information on configuring this device, see ifconfig(8).

DIAGNOSTICS
     ef0: adapter failure (XXXX)  A fatal error during receive or transmit has
     occurred.

     ef0: eeprom failed to come ready  When reading/writing the EEPROM, the
     busy bit failed to clear.  This may indicate a hardware problem.

     ef0: device timeout  The device has stopped responding to the network, or
     there is a problem with the network connection (cable).

SEE ALSO
     ifmedia(4), intro(4), isapnp(4), nsphy(4), hostname.if(5), ifconfig(8)

HISTORY
     The ef device driver first appeared in OpenBSD 2.6.

AUTHORS
     The ef driver was written by Jason L. Wright <jason@thought.net>.

BSD                             April 25, 2017                             BSD