Q: How's the IRQ sharing issue for the NF7-S board?
A: PCI-1, PCI-5 and Sil3112A share an IRQ.
PIRQ_0 is for PCI-5, PCI-1 and Sil3112A.
PIRQ_1 is for PCI-4.
PIRQ_2 is for PCI-3.
PIRQ_3 is for PCI-2.