IRQ conflict between twa0 and skc0

[Darren Pilgrim]

From: Brandon Fosdick [mailto:bfoz at bfoz.net] 
> 
> Darren Pilgrim wrote:
> > Try switching slots with the RAID and video cards.  It's silly, but 
> > then so is PCI interrupt routing.
> 
> Unbelievable. Who ever wrote the PCI spec should have been shot.

I believe the IEEE was involved. :)

> I switched the cards and now the network card is sharing an 
> interrupt with the video card, but neither seems to mind. 
> More importantly it isn't sharing with the raid card and they 
> all appear to be happy.

IRQ sharing is a known issue with many RAID cards and even some gigabit
ethernet cards.  It seems to correlate to cards that push the
performance limit of the bus.