EF(4) | Device Drivers 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 Ethernet cards, and embedded controllers based on the 3Com “corkscrew” EtherLink chips.

The following media types and options (as given to ifconfig(8)) are supported:

`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>.

July 16, 2013 | Debian