Change IRQ setting

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

I have a new Dell Latitude D610 that I've install an older communication
program to. My problem is that the software can not use the modem properly
unless its IRQ is around 5. My modem IRQ is 17. The function to change the
setting in device manager is not available. The computer properties show it
as an "ACPI Uniprocessor PC" with a standard HAL driver. Is there any way to
set the modem to an IRQ of 5? At this time there is nothing assigned to 5 or
7.
Any help would be greatly appreciated.

Thanks,

Rick J.
 
Rick J. said:
I have a new Dell Latitude D610 that I've install an older communication
program to. My problem is that the software can not use the modem properly
unless its IRQ is around 5.
Click to expand...

Which software? Is it a Windows 16-bit or DOS app?
My modem IRQ is 17. The function to change the
setting in device manager is not available. The computer properties show it
as an "ACPI Uniprocessor PC" with a standard HAL driver. Is there any way to
set the modem to an IRQ of 5? At this time there is nothing assigned to 5 or
7.
Click to expand...

The short answer is, it is not possible to change the IRQ
unless your BIOS has a screen where you can assign PCI IRQs.
Have you seen that the modem IRQ was other than 17 on this machine,
and then changed to 17 from whatever reason?

Regards,
--PA
 
Rick said:
I have a new Dell Latitude D610 that I've install an older communication
program to. My problem is that the software can not use the modem properly
unless its IRQ is around 5. My modem IRQ is 17. The function to change the
setting in device manager is not available. The computer properties show it
as an "ACPI Uniprocessor PC" with a standard HAL driver. Is there any way to
set the modem to an IRQ of 5? At this time there is nothing assigned to 5 or
7.
Any help would be greatly appreciated.

Thanks,

Rick J.
Click to expand...

It is not the physical IRQ of the modem card that is at issue
but the IRQ for the COM port. This is the IRQ that the comm
software needs to work with. Typically, IRQ 3 and 4 are used
by the COMM ports; IRQ 5 is for the serial connector. To free
up any one of these IRQ's for the comm software, it needs to
be disabled in bios setup.

But this might not be all that is involved. How old is this
modem? Is it PCI or ISA? A true "hardware" modem or a "winmodem"?
Is the modem programmable by jumpers on the card or via an
EPROM? And, finally, was this modem specified to work with
Windows NT? (Windows XP is a derivative of Windows NT.)
 
The software is a Windows 16-bit app. I never really paid attention to where
the modem was before but even after removing and reinstalling it again it
ends up at IRQ 17. I can't assign IRQs in the BIOS.

Thanks,
Rick J.
 
The modem is a new PCI Conexant D110 MDC V9. modem on Com3 specified for
WinXP. All settings are done through software.

Thanks,
Rick J.
 
The modem is a new PCI Conexant D110 MDC V9. modem on Com3 specified for
WinXP. All settings are done through software.

Thanks,
Rick J.
Click to expand...

Disable the on-motherboard com ports and then you should be able to re-assign
the PCI modem to a lower COM port.

If not, replace it with a external model that you can plug to the on
motherboard com ports.
 
Back
Top