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IRQ's

Posted on 2000-03-11
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Last Modified: 2013-11-09
I have recently installed an ISDN card (BT speedway) and had to remove a network card to do this. I cant reinstall the network card as there is no available IRQ for this.
The IRQ's are being used as follows:
00 - system timer
01 - keyboard
02 - programmable interrupt controller
03 - COM 2
04 - COM 1
05 - sound system
06 - floppy disk controller
07 - LPT1
08 - system cmos
09 - 4 devices : video card, pci to usb controller etc
10 - ISDN card
11 - XS-DG device manager
12 - mouse port
13 - numeric data processor
14 - primary ide controller and PCI bus master controller
15 - IDE controllers

Can I share IRQ's and how do I do this or can I remove and replace an IRQ

Thankyou in advance for answers
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Question by:euangi
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jhance earned 600 total points
ID: 2607615
You can share IRQs but ONLY one device can be active on the IRQ at a time.  Otherwise you will get conflicts.

Your best bet is:

07 - LPT1

The printer doesn't need to use the IRQ anyway and you can setup the printer to be in SPP mode where it won't even recognize the IRQ.
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Author Comment

by:euangi
ID: 2607631
An additional problem to using the IRQ for LPT1 is that there is a Zip drive connected to the printer port using drive E.

Are there any other suggestions ie. what are the two com ports used for?
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Expert Comment

by:jhance
ID: 2608054
Depending on how it's setup, the ZIP drive doesn't require the IRQ on the parallel port.  Don't run the ZIP Accelerator.  Another possibility is to ditch the ZIP parallel port drive and get a USB model.

As far as the COM ports, this depends on your setup.  Chances are that one of them is used by your modem.  The other one may be available if you have no other devices on your COM ports.
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Author Comment

by:euangi
ID: 2887245
sorry for delay in responding wirh comments, but none of the above worked.

I still have the same problem

help!!
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