Weird problem with 3C509 ISA NIC

Ted Mittelstaedt tedm at
Sun Jan 2 14:28:25 PST 2005

Run the DOS configuration program 3c5x9cfg.exe and look at how the
card is setup.  Like many ISA cards the 3c509 has an eeprom instead
of jumpers that you move around on the card.


> -----Original Message-----
> From: owner-freebsd-questions at
> [mailto:owner-freebsd-questions at]On Behalf Of Nikolas Britton
> Sent: Sunday, January 02, 2005 5:06 AM
> To: freebsd-questions
> Subject: Weird problem with 3C509 ISA NIC
> I was looking at the dmesg output on my firewall and "re"-remembered 
> that I have this 3Com 509 card that doesn't work quite right. take a 
> look at the demsg output below...
> dmesg:
> ep0: <3Com 3C509-TPO EtherLink III> at port 0x300-0x30f irq 10 on isa0
> ep0: No irq?!
> ep0: ep_alloc() failed! (6)
> device_probe_and_attach: ep0 attach returned 6
> ep1: <3Com 3C509B-TPO EtherLink III (PnP)> at port 0x210-0x21f 
> irq 3 on isa0
> ep1: Ethernet address 00:10:4b:54:39:52
> There is only one of those cards in the system yet there are two ep 
> devices. IIRC I have always had problems with this card in any system/OS 
> I put it in, infact FreeBSD is the only OS I can get it to work in... I 
> also have an identical clone of this card (might be a diffrent revision) 
> that works perfectly in FreeBSD or any system I stick it in.
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