Also the following IRQ resources are set to the PCI slots:-
- "INT Pin 1": AGP card and PCI Slot 1
- "INT Pin 2": PCI Slot 2 and PCI Slot 3 and ACPI (if enabled)
- "INT Pin 3": PCI Slot 5 (and HPT370 controller in KT7/A-RAID)
- "INT Pin 4": PCI Slot 4 and PCI Slot 6 and USB
Note you can force a particular IRQ number to be used by a particular "INT Pin #" using the PNP/PCI Configurations Setup in the BIOS. This allows you to force a certain slot to use a specific IRQ. You should not normally need to do this. Note that if you have ACPI enabled, Windows will ignore the assignments made in the BIOS and allow ACPI to determine this.
If you have an AGP card and two PCI devices, but no ACPI, USB or HPT370 enabled, you can put those devices in
- slots 2 and 4, 5 or 6
- slots 3 and 4, 5 or 6
- slots 4 and 5
- slots 5 and 6
If you have an AGP card, two PCI devices and ACPI, but no USB or HPT370 enabled, you can put those devices in
- slots 4 and 5
- slots 5 and 6
If you have an AGP card, two PCI devices and USB, but no ACPI or HPT370 enabled, you can put those devices in
- slots 2 and 5
- slots 3 and 5
If you have an AGP card, two PCI devices and HPT370, but no ACPI or USB enabled, you can put those devices in
- slots 2 and 4 or 6
- slots 3 and 4 or 6
If you have an AGP card and two PCI devices and ACPI and USB but no HPT370 enabled, then
- slot 5 will have its own IRQ
AMD recommend installing cards one at a time, shutting down and powering off between the addition of each card. They recommend installing cards in the following order:
- AGP card
- Voodoo I or Voodoo II Cards: Since these cards do not require an IRQ address, it is recommended that they be installed after the successful installation of your operating system. They do require a PCI slot
- Any ISA card
- Internal Modem (PCI)
- Sound Card (PCI or ISA)
- Network Card, a.k.a. NIC (PCI or ISA)
- DVD Devices requiring Dxr3 Decoder Board (PCI)Note: Some video decoder boards require two (2) IRQs for complete functionality. Check with your video decoder card manufacturer for video decoder support and requirements
- SCSI Adapter (PCI)
- Any others