IRQ sharing in Windows/XP-SP2 Home Edition - Can I force IRQ to a device ?

By Yabouca00058 ·
Hi ! I use Windows/XP-SP2 on my ASUS A89N32-SLI Deluxe motherboard based PC. Using System Information utility or the Device Manager I can see that IRQ 19 is shared by 2 devices ("Marvell Yukon 88E8053 PCI-E Gigabit Ethernet Controller" and one of my two "NVIDIA GeForce 7800 GTX" graphic cards) and IRQ 21 is shared by 3 devices ("USB openHCD standard Host Controller", "NVIDIA nForce4 Serial ATA Controller" and "Realtek AC'97 Audio") and no conflicts are reported. These IRQs have been automatically assigned by Windows. The computer works fine except sometimes I experience delays and garbled sound in Direct-X games.
It might work better, I think (but I may be wrong), if the serial ATA controller and the Realteck AC'97 Audio had each its own IRQ. Possible ? How to ? Thanks !

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Firstly it shouldn't matter

by HAL 9000 Moderator In reply to IRQ sharing in Windows/XP ...

But if you really must change things the first thing to do is look for a new or latter BIOS and FLASH the BIOS to the newest one available. Also download the newest AC 97 Sound Drivers from the ASUS Web Site here


BTW your model is A8N32-SLI Deluxe not A89.

If this doesn't cure your problem you can do this 1 of 2 ways the first option is to preset the IRQ's in BIOS to the different devices by entering BIOS and selecting the option that allows you to pre set the M'Boards IRQ this should by default be set to Auto.

Or you can use the Device Manager in Computer Management and right click on what you want to change and then select Proprieties then click on the Resource Tab and select to manually set the device.

You may have to muck around for some time because there are several things that you can change and they need to all be changed so that the device continues to work and you'll have to make sure that none of the settings have any conflicts before applying any changes.

Generally speaking though Choppy sound is a sign of a Low RAM Load for the use that the unit is being used for or the Sound Drivers need updating.


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