DEC DC 21140 + LiteOn LNE100TX = system hang

[Jason Thomas]

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irq 15 is for the secondary ide controller

Nelson Minar [nelson@media.mit.edu] wrote:
> I figured out more about my problem with two Tulip ethernet cards and
> found a way around it.
> 
> The problem was that the BIOS was initializing one of the cards to use
> IRQ 15. I don't know why that's a problem, but whenever I ifconfiged
> the card on IRQ 15 the system would completely hang.
> 
> I reset all the BIOS parameters and suddenly both cards were being set
> to IRQ 12. (I suspect that's because I used to have the secondary IDE
> channel disabled in the BIOS, so it thought IRQ 15 was free, and now
> it doesn't). Sharing the IRQ, everyone's OK and I have a working router.
> 
> This BIOS and motherboard are rather old (Phoenix 4.05, TS54P AIO
> motherboard), so I suspect that it's not worth chasing this down
> anymore. The BIOS is very broken - I'd tell it to assign a specific
> IRQ to a specific PCI card, and it wouldn't use it. It also wouldn't
> allocate IRQs to the PCI cards even though they were available. Bah!
> 
>                                                   nelson@media.mit.edu
> .       .      .     .    .   .  . . http://www.media.mit.edu/~nelson/
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-- 
Jason Thomas                           Phone:  +61 2 6257 7111
System Administrator  -  UID 0         Fax:    +61 2 6257 7311
tSA Consulting Group Pty. Ltd.         Mobile: 0418 29 66 81
1 Hall Street Lyneham ACT 2602         http://www.topic.com.au/

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