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Thread: Save me from the ghost of Windows 95 Past

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    Comfortably Numb directhex's Avatar
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    Save me from the ghost of Windows 95 Past

    IRQ Conflicts




























































    Thought that might bring back a few fond memories from some of the veterans amongst you. Remember the fun days of trying to get your sound card to play nice with your IDE controller, or your modem with your serial ports? Well, I've got a nice fun IRQ conflict to fix

    Not just any IRQ conflict, but a really bloody hard one.

    What kind of retro hardware would have IRQ conflicts, you ask? What kind of Pentium-1 Win95 hellish piece of kit?

    An Athlon XP 2400+, on an Asus A7N8X, running XP.

    Yep.

    Still here? Well then. Now for the details. The problem lies in getting a Sitecom Prism-based PCMCIA 802.11b wireless card working thorugh a Ricoh-based PCMCIA/PCI adapter. The PLX is detected by windows fine, and assigned an IRQ based on which PCI slot it's plugged into - if the wireless card is then plugged in, then Windows attempts to assign it the same IRQ as the PLX, and chokes at that point. Windows won't allow EITHER to have their details changed, the BIOS won't allow any IRQ forcing on any IRQ above 15 (where 17 & 18 are free).

    Help

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    Are there any devices you can free up from the lower range by disabling them in the bios?

    Will windows let you change the values of the pci card if you don't plug in the wireless card?
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    Ex-MSFT Paul Adams's Avatar
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    Tried a different PCI slot?
    (Is it in the slot right next to an AGP slot by any chance?)

    Abit motherboards used to be a nightmare for only allowing certain configurations of IRQs for various slots, but by moving the hardware around you could convince some kit to coexist with others.

    I take it the secondary IDE channel isn't in use on this system?
    IIRC IRQ 15 is for that (with 14 being the primary channel)?

    No FAQ on the manufacturer's site for the PLX thingy for such issues?
    ~ I have CDO. It's like OCD except the letters are in alphabetical order, as they should be. ~
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    F.A.S.T. Butuz's Avatar
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    Could maybe free up an IRQ by changing your parallel port to Standard Parallel port in the bios?

    Coor i havent had an IRQ conflict for so long i've forgotten what to do! My brain needs a RAM upgrade methinks.

    Butuz

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    Comfortably Numb directhex's Avatar
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    whoever fixes it gets a beer in the mail!

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    Comfortably Numb directhex's Avatar
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    that might help

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    if you don't use the serial ports, you should be able to kill those off..

    ooh.. http://www.ratocsystems.com/english/.../cbs51u1.0.pdf any use ?
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    Ex-MSFT Paul Adams's Avatar
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    Been through all the troubleshooting tips on this page?
    http://www.synchrotech.com/support/c...ubleshoot.html

    I realise it's talking about the Ricoh R/RL/5C476, but it might have something appropriate in there.

    I've been using Shuttle XPCs so long I've not seen an IRQ problem in years I'm afraid (well, actually I'm kinda glad!).
    After XMS/EMS issues under MS-DOS, they were my nemesis over the years of building PCs.
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    Comfortably Numb directhex's Avatar
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    le probleme est resolu

    for those who are interested, the procedure was thus:

    1. disable serial ports in the bios, to try & free up some lower-value irq ports.
    2. in windows, update the driver on the ACPI Uniprocessor PC entry from ACPI Uniprocessor to Advanced Computer Power Interface PC.
    3. the above two move the PLX from irq 18 to irq 3.
    4. Go back into device manager, hit the resources tab for the still-fubar network card - but this time with the ACPI change, the changing of settings is allowed. change the base set form Automatic Settings to Base Config 0000, moves the IRQ request form 18 to 3, then change the I/O setting (scrolling manually through the thousand or so hex address ranges) to the one setting windows doesn't have a wobbly about itn the little status window at the bottom.


    bleh.

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    fun!
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    and acpi /apic was supose to make things easy....... bleh



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    HEXUS webmaster Steve's Avatar
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    Quote Originally Posted by Apex
    and acpi /apic was supose to make things easy....... bleh
    Well it does - how often do people have to do what hexy did?

    I fondly remember the conflict days, things are so much easier now, but for some strange reason I used to like the sense of achievement after getting 5 cards to work in the same PC!
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    True

    but then for me the first thing i turn off is apic and then i turn the serial ports and parrel off too, now only if i could turn the ps2 ports off.....



  14. #14
    HEXUS webmaster Steve's Avatar
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    Quote Originally Posted by Apex
    but then for me the first thing i turn off is apic and then i turn the serial ports and parrel off too, now only if i could turn the ps2 ports off.....
    Bah, I've had no problems with APIC on this rig, and that's running XP Pro and Linux. I do tend to turn off unwanted ports though, so that's parallel & serial.

    The rig has in it:

    2 SCSI Cards
    1 sound card
    1 graphics card
    1 NIC [onboard]
    1 SATA chip [onboard]
    2 ATA chips [onboard]

    and some other stuff...
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