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Date:      Fri, 11 Jan 2002 10:22:39 -0600
From:      Dan Thill <thill@umr.edu>
To:        Robert Suetterlin <robert@mpe.mpg.de>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: System hangup depends on PCI slot used for PromiseU100TX2.
Message-ID:  <20020111102239.A13610@umr.edu>
In-Reply-To: <20020111152709.GF159@robert2.mpe-garching.mpg.de>; from robert@mpe.mpg.de on Fri, Jan 11, 2002 at 09:27:09AM -0600
References:  <20020111152709.GF159@robert2.mpe-garching.mpg.de>

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> 	I tried one last thing and plugged the promise controller into
> a different PCI slot.  Now the machine boots ok.

> Can someone please explain this to me?  I will try no other
> configurations until I know why this happens, but unfortunately the
> slot I use now is my 64bit PCI Slot which I wanted to use for a
> gigabit NIC... so if possible I would like to reslot the promise
> controller.

I had this happen while trying to get a NIC and a modem to co-exist.
It had to do with the way the BIOS shared IRQs between certain slots.
Most BIOS'es also have user-definable IRQ settings for slots.  By
toying with these, you may get somewhere.

-dan


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