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From: Wilko Bulte <wilko@yedi.iaf.nl>
Message-Id: <199512071937.UAA01241@yedi.iaf.nl>
Subject: Re: dma beyond isa with a AH1542?
To: kuku@gilberto.physik.rwth-aachen.de (Christoph P. Kukulies)
Date: Thu, 7 Dec 1995 20:37:37 +0100 (MET)
Cc: freebsd-hackers@freefall.freebsd.org
In-Reply-To: <199512061409.PAA22744@gilberto.physik.rwth-aachen.de> from "Christoph P. Kukulies" at Dec 6, 95 03:09:32 pm
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> I built a new kernel for my non-IDE system running from a
> AH1542A. Is this board limited to 16MB? I have 20MB Ram,

Yep. AT bus does not have enough address lines...

> disabled option BOUNCE_BUFFERS since I thought this was not
> necessary when running a busmaster DMA controller
> but got a panic after the dma beyond ISA message during boot.

It works OK with BOUNCE_BUFFERS enabled. I used one for years
(a 1542A)

Wilko
_     __________________________________________________________________________
 |   / o / /  _   Wilko Bulte             email: wilko@yedi.iaf.nl
 |/|/ / / /( (_)  Private FreeBSD site  - Arnhem - The Netherlands
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