IRQ Changing in XP

[Guest]

Hello everyone.

Hoping someone might be able to help me with my issue. I play some online
games and have been having an issue with the sound in one of them. It seems
that my onboard sound and SATA controller 1 (where my HDD is plugged in are
sharing IRQ22. Now I understand the whole virtual IRQ assignments thing that
XP does and how it swaps back and forth between the ones being used ect. The
issue is that they are both being used.

I have changed my driver for my computer to Standard PC and this worked, but
I have a dual core processor and this made my system only see one core. I
tried to switch it back but would just not work and now I had to reload
windows because of this.

My question is does anyone know a way to switch an IRQ just so that those
two things don't share the same one? Is there an easy way? Also my BIOS
does not have that feature built into but even it did I do not think it would
have worked because this seems to be windows controlled. Any help would be
appreciated.

Thanks

 

[R. McCarty]

It's motherboard dependant. The IRQs are internally mapped. You
wouldn't want to use a "Standard PC" HAL as that turns off the APIC
(Advanced Programmable Interrupt Controller). This drops the number
of available IRQs from 23 back down to 15.

It varies from Motherboard to Motherboard. On my Intel 965 - IRQ
# 18 is shared between 4 separate PCI bus components. Andy my
IRQ line #16 has 5 PCI bus components shared.

Some BIOS setups provide an IRQ mapping override, but many times
Windows XP ignores that and makes it's own assignments.

 

[Guest]

So with my BIOS not being able to map and even if t did windows over riding
this, is there any way to change them? Not a ground breaking emergency issue
but it is causing the most annoying sound issues I have ever had! I am sure
this is it because when I switched over from the ACPI to Standard PC it
worked and they were again on different IRQ's.

 

[Guest]

APIC rather!!! Sorry too many acronyms.

So with my BIOS not being able to map and even if t did windows over riding
this, is there any way to change them? Not a ground breaking emergency issue
but it is causing the most annoying sound issues I have ever had! I am sure
this is it because when I switched over from the ACPI to Standard PC it
worked and they were again on different IRQ's.