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 !