NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     device ep

DESCRIPTION    [Toc]    [Back]

     The ep device driver supports network adapters based on the 3Com 3C5x9
     Etherlink III Parallel Tasking chipset, like the following:

     +o	 3C1 CF
     +o	 3C509-TP, 3C509-BNC, 3C509-Combo, 3C509-TPO, 3C509-TPC ISA
     +o	 3C509B-TP, 3C509B-BNC, 3C509B-Combo, 3C509B-TPO, 3C509B-TPC ISA
     +o	 3C529, 3C529-TP MCA
     +o	 3C579-TP, 3C579-BNC EISA
     +o	 3C562/3C563 PCMCIA
     +o	 3C569B-J-TPO, 3C569B-J-COMBO CBUS
     +o	 3C574-TX, 3CCFE574BT, 3CXFE574BT, 3C3FE574BT PCMCIA
     +o	 3C589, 3C589B, 3C589C, 3C589D PCMCIA
     +o	 3CXE589EC, 3CCE589EC, 3CXE589ET, 3CCE589ET PCMCIA
     +o	 Megahertz 3CCEM556, 3CXEM556, 3CCEM556B, 3CXEM556B PCMCIA
     +o	 3Com 3CCFEM556B, 3CCFEM556BI PCMCIA
     +o	 OfficeConnect 3CXSH572BT, 3CCSH572BT PCMCIA
     +o	 Farallon EtherMac PCMCIA

     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
     ifconfig(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    [Toc]    [Back]

     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.
     Beware!  Avoid placing other cards at that address!

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

DIAGNOSTICS    [Toc]    [Back]

     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    [Toc]    [Back]

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

BUGS    [Toc]    [Back]

     Support for the 3COM 3C1 is not working.  Support for the 3CCFEM556 fast
     ethernet cards has not been tested.

STANDARDS    [Toc]    [Back]

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


FreeBSD 5.2.1		       November 2, 2003 		 FreeBSD 5.2.1