Multiple ethernet cards

David R. Kohel kohel@math.nus.edu.sg
Sun Oct 18 11:22:21 1998


I expected that I would need to change the IRQ on one or the 
other card.  The 3Com card does not have any toggle switches 
which can be set.

In a previous message I mentioned this problem, but didn't 
mention that one of the cards was not PCI.  Does anyone know 
how I can change the IRQ's?  

--David

P.S.  I have no DOS.

> Hi tulip'ers,
> 
> > I'm trying to get both a 3Com (ISA) and LinkSys (PCI) card working.  
> > Thanks to the previous responses, I upgraded to v0.89 of tulip.c
> > and have the LinkSys card working.  Each card works independently 
> > but the 3Com card is inactive with the LinkSys card inserted.
> > 
> > Ethernet entries from "ifconfig -a":
> > 
> > eth0      Link encap:Ethernet  HWaddr 00:A0:CC:24:33:86  
> >           inet addr:137.132.75.154  Bcast:137.132.75.255  Mask:255.255.255.
0
> >           Interrupt:10 Base address:0xe800 
> > 
> > eth1      Link encap:Ethernet  HWaddr 00:A0:24:2F:1C:5D  
> >           inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
> >           Interrupt:10 Base address:0x300 
> 
> Well, I don't know sharing interrupt between ISA & PCI will be a good idea.
> You will get lots of trouble, from hardware perspective (triggering method,
> chipset recognition, interrupt acknowledge), from driver code of two 
> different Ethernet cards!  Try to relocate either interrupt, so that they 
> are different.  I don't have a LinkSys personally, but I've configured
> lots of machine in my working place with tulip Ethernet card (DEC chip)
> and 3c509 coexist, and run happily for months.
> 
> My 2 cents,
> Stephen.
> 
> -- 
>                                                               \//////
> Stephen Siu Ming Wong     Internet: stephenwong@cuhk.edu.hk   [ O O ]
> Dept of Computer Science              smwong@cs.cuhk.edu.hk    \_-_/
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