Solved

Resolving IRQ conflict under NT 4.0 wkstn.

Posted on 1997-06-12
4
552 Views
Last Modified: 2013-12-14
I have a Zenith GT-166 running NT Workstation 4.0.  I have an Intel EtherExpress 82557 PCI-Based 10/100 ethernet card which is at IRQ 11, which works fine by itself.  However, when I add an Colorado System SC 50 SCSI card (really an Adaptec 15xx (AIC 6x60)), on which I've set the jumper to IRQ 10, NT loads the sparrow.sys driver at IRQ 11 instead of at IRQ 10 (there's also an I/O conflict at 140-15F).  How can I get the sparrow.sys driver to recognize that there's already a device at IRQ 11?  I've noticed that running the NT diagnostics program and looking at resources/IRQs only shows the ISA resources and IRQ 11 appears free, so somehow I need to make the system aware that IRQ 11 is already taken.  Thanks!
0
Comment
Question by:pjwagner
  • 2
4 Comments
 
LVL 2

Expert Comment

by:czamudio
Comment Utility
Try checking the automatic settings for PCI cards in your bios.
0
 

Author Comment

by:pjwagner
Comment Utility
The comment from czamudio above led to a solution!  In the
BIOS settings there's a Plug and Play section, and in there
it listed IRQs considered open.  I manually changed IRQ 11
from "Open" to "Used by an ISA Device", and when I rebooted
NT moved my ethernet card to IRQ 9 and the SCSI card is now
happy at IRQ 11.  Thanks!  (note to czamudio - please submit
this as the answer for credit :-)
0
 

Accepted Solution

by:
jacobsr earned 100 total points
Comment Utility
To over ride the hard coded IRQ 11 in SPARROW.SYS:

1. Back up your registry

2. Unless you have a lot of spare time and all your NT 4 tools, back it up again.

3. Get Q102991 from the Knowledge Base; even though it refers to NT 3.1, the principle seems to be the same.

4. Using REGEDIT add "Parameters" as a subkey under HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Sparrow

5. Add "Device0" as a subkey under "Parameters," just established.  If the SCSI card is not the only SCSI card in the system, you may have to change the "0" to "1" or whatever.

6. Add as a string value under "Device0" "DriverParameter"

7. Set the value of DriverParameter to "IRQ=12" (no quotes needed; REGEDIT will add them automatically).  My card's IRQ was 12; yours may differ and you must set the IRQ to the actual IRQ.

8. Reboot & check the event log and NT diagnostics to make sure that the new IRQ is in place.  You shouldn't see any more Error 13 entries in the log, and the "Resources" tab in NT diagnostics should show the correct IRQ for the card.

Best wishes to all.

Robert Jacobs
Xjacobsr@cwu.edu  (remove the "X" to correspond)

NB -- The Sparrow driver _may_ operate by polling rather than by interrupt after this fix.  Performance will be better with interrupts.  If you _can_ put it on IRQ 11, you may be somewhat better off.  -- RCJ
0
 

Author Comment

by:pjwagner
Comment Utility
This worked great - my previous solution of changing the
Plug and Play settings in the BIOS to allow configuration
of interrupts through Setup resolved my IRQ conflict but
left me with other problems (such as LPT1: not being
accessible).  The above suggestion seems to allow all cards
and devices to coexist.  Thanks much for the response!
- Paul
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Update 11/3/2014 - Although the below article will get you to relocate the WINSXS folder, Microsoft has finally released a utility to reduce the size of the WINSXS folder. For some reason, it's not that straightforward. It only works on Windows 2008…
Sometimes drives fill up and we don't know why.  If you don't understand the best way to use the tools available, you may end up being stumped as to why your drive says it's not full when you have no space left!  Here's how you can find out...
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…
The Task Scheduler is a powerful tool that is built into Windows. It allows you to schedule tasks (actions) on a recurring basis, such as hourly, daily, weekly, monthly, at log on, at startup, on idle, etc. This video Micro Tutorial is a brief intro…

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now