Quote:
Spirantho wrote:
How can I find out what the correct IRQ line is for the PCI slot? There's only one slot. I noticed the IRQ lines for the onboard bits are 0x1B and 0x1D - I tried setting the IRQ line to 0x1C and 0x1F in the PCI Config space but still didn't trigger any interrupts. I set it by using WriteConfigByte to 0x3C.
A PCI slot provides 4 IRQ pins (INTA, INTB, INTC, INTD). The interrupt lines connected to these pins are normally rotated by one line for each slot. This is also done on a PCI card that contains more than one PCI device. So maybe you have to take this into account?
See
here for how interrupts are alternated on PCI addon cards (the big table).
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