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EP(4)			  i386 Kernel Interfaces Manual 		   EP(4)

NAME
     ep -- Ethernet driver for 3Com Etherlink III (3c5x9)

SYNOPSIS
     device ep

DESCRIPTION
     The  ep  device driver supports the 3c509 (ISA), 3c529 (MCA), 3c579 (EISA),
     and various PCMCIA cards including the  3c589.   Various  models  of  these
     cards come with a different assortment of connectors:

     AUI/DIX		   Standard  15  pin  connector,  also	known as 10base5
			   (thick-net)

     10Base2		   BNC, also known as thin-net

     10BaseT		   UTP, also known as twisted pair

     The default port to use is the port that has been selected with  the  setup
     utility.	To  override  this,  use the following media options with ifcon-
     fig(8) or in your /etc/rc.conf file.

     10base5/AUI	   Use the AUI port.

     10base2/BNC	   Use the BNC port.

     10baseT/UTP	   Use the UTP port.

     If there are multiple cards in the computer, they are searched for  in  the
     following order: bus, slot, then ethernet address.

NOTES
     The  3c509  card has no jumpers to set the address.  3Com supplies software
     to set the address of the card in software.  To find the card  on	the  ISA
     bus, the kernel performs a complex scan operation at IO address 0x110.  Be-
     ware!  Avoid placing other cards at that address!

     Furthermore,  the	3c509  should  only  be configured in EISA mode when in-
     stalled in a computer that has actual EISA slots (and an EISA-aware  BIOS).
     The  normal  driver  auto-detection support is sufficient for non-EISA sys-
     tems.

DIAGNOSTICS
     ep0: reset (status: %x)  The driver has  encountered  a  FIFO  underrun  or
     overrun.  The driver will reset the card and the packet will be lost.  This
     is not fatal.

     ep0:  eeprom  failed  to come ready  The eeprom failed to come ready.  This
     probably means the card is wedged.

     ep0: 3c509 in test mode. Erase pencil mark!  This means  that  someone  has
     scribbled	with pencil in the test area on the card.  Erase the pencil mark
     and reboot.  (This is not a joke).

SEE ALSO
     ed(4), el(4), ie(4), intro(4), le(4), ng_ether(4), vx(4), ifconfig(8)

STANDARDS
     are great.  There's so many to choose from.

FreeBSD 4.5			February 4, 1993			   EP(4)
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