On Wed, 23 Feb 2000, Jean-Louis Debert wrote:
> Jeremy Kersenbrock wrote:
> >
> > What does USB have to do with this? I understand how diabling USB would free
> > up an IRQ, but this Intel nic will always take IRQ11 unless I find a way to get
> > the DOS setup program to run.
>
> He probably wondered whether it would be USB taking also IRQ11
> as it often does. From what you say, it looks like it's rather
> the AGP card taking up IRQ11 too ...
Good call, Jean-Louis. I misunderstood that it was the AGP and not the
USB conflicting, although I was thinking too that when USB is enabled it
tends to grab irq 10 when 11 isn't free. The usual choice for most nic's
I've seen is to grab only either 10 or 11 with most of these friggin' poor
pci cards. I've always been rather curious as to why some nic's grab only
10 or 11 and not say 9, 5, 4 or 3 if they're free.
> > It doesn't even run when I shutdown and reboot in MS-DOS Mode.
>
> If you have several computers available, could you try to remove
> the AGP card, and put a PCI (or even ISA) video card in its place,
> just the time needed to try your DOS setup program again ...
> (don't forget to set your windows in VGA mode before)
> This way, you would (maybe) eliminate the conflict that confuses
> the DOS program, and you could (maybe) assign another IRQ
> permanently in the card.
>
Excellent recommendation.
> > I cannot change the IRQ's in my BIOS. My only BIOS options are to select
> > "Legacy ISA" or "PCI/ISA PnP" for each IRQ. Needless to say, changing IRQ11
> > from "PCI/ISA PnP" to "Legacy ISA" will only result in the nic (and likely my
> > AGP card also) not working at all.
> >
> > Lastly, someone suggested that I might have an el-cheapo motherboard that isn't
> > handling PCI right. Possible, but shouldn't be. I have a Soyo 5EHM v1.1 with
> > Award BIOS v4.51PG on a VIA MVP3 chipset. It is supposedly PCI2.1 compliant.
> > But it does do some weird stuff with it's drivers. One of the Windows drivers
> > that come on the installation disk with the mobo is a "IRQ Remapping utility",
> > so maybe it's IRQ's are all messed up.
>
> I have the same VIA MVP3 chipset, and the same Award 4.51PG BIOS,
> although
> my mobo is a DFI. But I _can_ assign specific interrupts to specific
> PCI
> slots: I have a menu for each of the 4 PCI slots, where I can set IRQ
> to some value, or to "AUTO" which lets the BIOS choose.
> Another thing about the BIOS: if you have some option like "assign
> IRQ to VGA card" or something like that, UNcheck it and see what
> it assigned (or didn't) to the AGP card.
I believe that it was the MVP3 and it's odd IRQ assignment features that
prompted some mobo manufacturers to ask for and ship the interrupt-sharing
patch for Winblows 95. The only thing I'd be worried about is that if you
disable the irq for the AGP, it often screws up the display.
--
Rich Clark
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