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Music Manic · Post by **Music Manic** » Tue May 11, 2004 5:05 am

Could usb interference affect stability or agp trying to access CPU?
Thanks

BingoTheClowno · Post by **BingoTheClowno** » Tue May 11, 2004 9:30 am

Yes, it could

More likely the effects you are seeing are not related. Can you offer more details?

Music Manic · Post by **Music Manic** » Tue May 11, 2004 5:09 pm

Well I have Pulsar in slots 2 and 3 with UAD in 4.
ACPI IRQ shares Pulsar,about to turn that off.USB is also running.

BingoTheClowno · Post by **BingoTheClowno** » Tue May 11, 2004 5:56 pm

What do you mean by ACPI shares an IRQ? What IRQ is assigned to the USB? ACPI sucks, you might have virtual IRQs (fe up to 25)

Post by **Guest** » Tue May 11, 2004 6:54 pm

Hi PC's have 15 real IRQ's only 4 used for soundcards/video cards etc...
real IRQ can be found under standard mode
IRQ 5 or 9 or 10 or 11 (15 if your secondary IDE is disabled but not recommanded.
--------------
ACPI mode is not the answer all the time and if you run into problem. you will have to switch painfully to Standard

<font size=-1>[ This Message was edited by: antar on 2004-05-11 19:55 ]</font>

Counterparts · Post by **Counterparts** » Wed May 12, 2004 4:08 am

BingoTheClowno wrote:

ACPI sucks, you might have virtual IRQs (fe up to 25)

Virtual IRQs are the effect of the APIC, not ACPI (the two are inter-related, though and is a confusing pile of...what dogs do!)

As for USB, I'd certainly disable the v.2 interface (and have done so on my PC), USB v.1 (OHCI) should be OK though.

Royston