Assigning IRQ to PCI slot in Asus A7N8X?

[Brian]

Hi,

I have an Adaptec 2400a ATA RAID controller and am seeing less
performance than expected. Adapted told me to change the IRQ for the
board from 18 (current setting) to 10, which is currently free. Asus
gave me a rather cryptic technical support answer to the question of how
to manually set an IRQ for a PCI slot:
" you could press 'del' while post and enter cmos
setup---advanced--pnp/pci configuration, please set the 'resources
controlled
by' to 'manual' , then you could enter 'pci irq resources exclusion' and
set the irq. but please notice: the pnp os (such as win2k, xp)
will ignore the setup of bios and assign the source of system by os.¡¡¡¡"

The "pci irq resources exclusion" list gives no way to assign a
particular "excluded" IRQ to a PCI slot. The device manager shows the
IRQ set to 18 for the 2400a, but the "change setting..." button is
greyed out and inactive.

Is there any way to manually assign IRQs on this A7N8X motherboard???

Thank you,

BrianP

 

[KB]

You could disable com1 and 2 and printer port if you don't need them.
That will free up some IRQ's.

 

[BrianP]

K.B.,

For some reason, I have oodles of free IRQs. What I lack is a way to
stuff one into a PCI slot. On my P2B motherboard, you can directly
assign any interrupt to a slot. Why would asus remove this capability?
Any ideas?

Brian

 

[Elliott]

You could disable com1 and 2 and printer port if you don't need them.
That will free up some IRQ's.

I just went through the agony of installing an Adaptec scsi adapter
and got basically the same messages as you. I finally swapped with a
card in slot 5 and all was ok. I guess different resources are
assigned to different pci's. In fact I had a modem in slot 5 that
didn't work until I put in slot 3. I could'n manually assign
resources either.


Elliott in New Jersey