This is by design. You may be thinking about older machines and the problems of shared IRQs, but the new PCI designs allow for such with nanosecond overhead.
Let me bottomline an issue with your post.
No where did you share the make/model of your machine, if you have a current BIOS, installed motherboard drivers and the one big item is... you didn't tell why you were playing with the IRQ to begin with.
It's likely a problem you are trying to solve?
Bob
Hello my name is dennis. I am having a preplexing problem and could use some help. I have windows XP pro on a generic type computer. The problem I have is XP is assinging IRQ's and it has put my sound card and video on the same IRQ and when both are utilized my sound is choppy. I have changed the IRQ in the BIO,s but when XP takes over it ouer writes them SO I go into XP and reset them to different IRQ's and XP moves them both to the same IRQ. HELP PLEASE!

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