I am writing a x86 device driver for a PCI device. I am now trying
to catch the interrupt which appear on interrupt line 'C' on the
The problem is, I do not know which IRQ the interrupt is routed to.
There is probably an interrupt router somewhere inside the PC (a
DEC celebris XL/90), but I do not know how to reveal its secrets.
If anybody know something about this, I would be happy to know.