Cannot assign IRQs

  • Thread starter Thread starter Rod
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R

Rod

I have completed a clean install of Windows 2000 Pro. The
system resets frequently. I have four 'plug and play'
interfaces (Video, SCSI, network & modem) trying to share
the same IRQ (11).

My Windows Me plug and play manager has all of these
devices assigned to different IRQs.

I have disabled and reinstalled the interfaces several
times, each time the interface would be assigned another
IRQ, but would revert to IRQ 11 after a new boot.
 
That's normal for Win2k. I have five devices running on irq 11. I have no
problems at all.
 
-----Original Message-----
That's normal for Win2k. I have five devices running on irq 11. I have no
problems at all.

--
Russ Tanner
Palmer, Alaska
email: russ at tannersacre.com
http://www.tannersacre.com




.
Click to expand...
Unfortunately, my interface cards do interfer with each
other, causing hardware resets. This is particularly true
of the Video and SCSI interfaces that work at close to
their upper bandwidths.

With Windows Me, the PNP manager has correctly assign
different IRQs to prevent conflicts.

I should be able to manually configure the IRQs as the
Administrator, but the options are not available.
 
You only get to play with the IRQ settings IF you remove all power
control from Win2000 by installing the "Standard PC" HAL instead of the
"ACPI" HAL. You should be able to locate the instructions to do that in
the Microsoft Knowledgebase Area
 
Read your system board book or experiment and see what slots share irq's.
Then move your scsi card to another slot that does not share with the agp
card.

Joe
 
My 2940UW, with the newest ASPI layer and newest drivers shared IRQs
just fine in 2K. You can look at the MB manual and see which slots
the BIOS itself shares between the slots. It won't change what
Winders says is going on but it is better to put the cards in slots
that the MB manual says don't share with other slots or onboard stuff
like USB or 1394 stuff. Ultimately the BIOS has the final say even
tho Win will tell you different things.

You can assign IRQs where ever you like with a different Windows HAL;
ie. Standard PC, but you will probably lose some of the functionality
in power management. To do so, go into the device manager, expand the
+ next to computer, and you'll probably see ACPI Uniprocessor PC.
That is your HAL. You can drill down and change drivers bringing up a
list which includes Standard PC. Installing that one will;
1 Necessitate reinstalling every single driver for the MB, Video,
SCSI, NIC, everything, and I do mean everything.
It will redetect every single device and chip on the MB, mouse,
keyboard, everything.
2 It will let you decide which slot gets which IRQ.

Alternately, newer motherboards have APIC which makes available to
windows more IRQs. In technical terms it's called a shitload.
For instance I believe the last time I looked, my 29160 is running on
IRQ 22 and my old 2940UW is running on 23.
If your MB is more than a year or so old, don't bother looking.
If it is pretty recent, go into the BIOS and enable APIC.
You will still have your ACPI power management functions and all the
cards and onboard stuff will get it's own IRQ.


I have completed a clean install of Windows 2000 Pro. The
system resets frequently. I have four 'plug and play'
interfaces (Video, SCSI, network & modem) trying to share
the same IRQ (11).

My Windows Me plug and play manager has all of these
devices assigned to different IRQs.

I have disabled and reinstalled the interfaces several
times, each time the interface would be assigned another
IRQ, but would revert to IRQ 11 after a new boot.
Click to expand...

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W2000 does not have the ability to rebalance resources.
Disabling 'Plug n Play' in the BIOS may help somwhat. For
further info refer to Microsoft Knowledge Base Article
252420
 
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