PCI IRQ=9 for multiple PCI cards.

[terry]

With NI's HPIB488 interface, third party ethernet, and acrnet cards installed, all plug and play, all PCI devices, IRQ=9 is always set. We have tried several PC's, Pentium Pro, Pentium II, etc. with Win2000. We must communicate between several different devices. I have seen other comments about IRQ=9 being set, but no final fixes. Has anyone information on how to overcome this problem.

[DiegoF]

Hi,

PCI allows interrupt sharing. You should get any resource conflict errors.

In any case, the PCI resources are assigned at boot time by the BIOS. The OS then queries the PCI BIOS to enumerate all the devices on the bus. If there is any way to change the it would be on the BIOS.

DiegoF
National Instruments.

[Aidan Grey]

What motherboard and BIOS are you using?

I think IRQ 9 is used for ACPI on some motherboards. Check
to see if "Plug and Play OS" is enabled in your BIOS. If you
are using Window NT, then it should be set to OFF.

Aidan Grey


On Mon, 2 Jun 2003 15:37:07 -0500 (CDT), terry wrote:

>With NI's HPIB488 interface, third party ethernet, and acrnet cards
>installed, all plug and play, all PCI devices, IRQ=9 is always set.
>We have tried several PC's, Pentium Pro, Pentium II, etc. with
>Win2000. We must communicate between several different devices. I
>have seen other comments about IRQ=9 being set, but no final fixes.
>Has anyone information on how to overcome this problem.