Re: The long Re: no interrupts to 3c509B

Lawrence MacIntyre (lpz@ornl.gov)
Sat, 01 May 1999 15:33:30 -0400

I just got through playing this game. We got an HP Pavilion 6470Z and
it works fine with the 3c509b in ISA mode when running Linux, but in
Win98, all of the IRQs that the card wants to use already have something
on it, and the BIOS option to reserve an IRQ seems to be ignored (at
least I tried IRQ 10, and something grabbed it anyway). The card only
works in PnP mode (on Win98). Perhaps that's because this machine has
too many boards plugged into it;-)

The sad thing is using a 3c509b in a modern machine, but in Linux, every
PCI card I've tried ends up with IRQ 0 and won't work. Does anyone have
any hints for that problem? I've tried 2.0.36 and 2.2.4 (with and
without pnp support).

Anthony Barbachan wrote:
>
> If your 3C509B is in PNP mode then you should use isapnp to configure the
> card. Furthermore you should reserve the IRQ in the BIOS so that it is not
> assigned to a PCI device, as far as I know Linux doesn't automatically
> reassign PCI devices' IRQs to make room for PNP isa cards like Win9x does.
> You best option though is to configure you 3C509B in ISA mode, as this mode
> is fully compatable with Linux without the need to use isapnp and will work
> equally well in Win9x as well.
>
> > Hallo,
> > for those of you interested, it "WAS" a kernel problem. I removed PnP
> > support from the kernel and it now works. The card IS in PnP mode, but
> > for some reason when the card is in PnP and the kernel tries to use PnP
> > on it it detects the wron IRQ or something. I'm no kernel genious so I
> > can't say what it was doing. Thanx everyone who tried to help me. It's
> > much appreciated! Good Day!
> >
> > Timothy,
> >
> > Anthony Barbachan wrote:
> > >
> > > Are you sure the 3c509B is not setup in PNP (Plug and Play) mode?
> > > ----- Original Message -----
> > > From: Timothy Wood <diyab@ovnet.com>
> > > To: <linux-kernel@vger.rutgers.edu>
> > > Sent: Thursday, April 29, 1999 12:09 AM
> > > Subject: Re: no interrupts to 3c509B
> > >
> > > > Hallo,
> > > > One short note to add that I figured might help. The card works fine
> > > > in windoze.. I'm using it right now. It's got to be in the kernel or
> > > > something.
> > > >
> > > > Timothy,
> > > >
> > > > -
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> > > >
>
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-- 


                                 Lawrence
                                    ~
------------------------------------------------------------------------
Lawrence MacIntyre       Oak Ridge National Laboratory      423.574.8696 
            lpz@ornl.gov          http://nrg.cind.ornl.gov/~lpz


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