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Date:      Fri, 24 Jan 97 10:19:26 MET
From:      Rob Schofield <rschof@mccomm.nl>
To:        freebsd-hardware@freebsd.org (Hardware list at FreeBSD)
Subject:   Re: [Q] aah-2940uw
Message-ID:  <199701240920.KAA05586@mccomm.nl>
In-Reply-To: <199701232250.OAA17262@freefall.freebsd.org>; from "Jonathan M. Bresler" at Jan 23, 97 2:50 pm

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>       fixed that.  nwo the aha-2940uw works well with the
>       st32550n.
> 
>       new problem.....the ethernet card, smc 8013ewc, does not work.
>       the error message is 
> 
>       ed0: failed to clear shared memory at cc000 - check configuration.
> 
>       the card is hard jumpered to irq 10, ioaddr 300, mem cc000.
>       worked great at that setting before i flashed the bios ;)
>       installed 2.2-alpha via the this ethernet card at those settings.

Could be if you've blown the Flash with a new BIOS, that it whacked
any on-board settings to defaults. I know my 1742 came configured for
BIOS base address of CC000h, and I had to change it. It could be that
your eth card has the same expectations as before, and your Disk
controller is now arguing with it on it's home turf.

I would check the BIOS base address for the AHA before suspecting the
eth card.

As for the comment regarding 8/16 bit controllers, this applies to
systems using the 16-bit ISA bus, ie. all controllers in the Upper
memory expansion range (640k-1024k) must have the same address
resolution range, otherwise you get clashes between cards due to some
cards improperly decoding 16-bit addresses and creating duplicate,
"shadow" address ranges that could overlap.

Rob
--
Witticisms are hard to define on Monday mornings...

schofiel@xs4all.nl       http://www.xs4all.nl/~schofiel
rschof@mccomm.nl



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