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From: BenH <bh40@calva.net>
To: linuxppc-dev@lists.linuxppc.org,
	mklinux-development-system@public.lists.apple.com
Subject: NuBus PowerMacs and PDM video
Date: Tue, 9 Feb 1999 13:14:36 +0100	[thread overview]
Message-ID: <19990209131436.011982@mail.mipsys.com> (raw)


Hi !

I'm doing some experiments with the MMU (learning it's usage). The goal
is to add some better bootstrap code to BootX (get rid of the -622 error
with MacOS VM) and to add support for the rather "special" memory
mappings of the NuBus PowerMacs.

However, I have a problem with the video on those machines: If I
understand things correctly, the framebuffer is set by MacOS to physical
address 0. This is a problem for us since we need to have some exception
vectors and other things like that in this location.

I beleive MkLinux booter moves it elswhere, but I don't know how to do
that (I don't have infos about the chip and I don't have one of those
machines to test with).

Any clues ?

-- 
           E-Mail: <mailto:bh40@calva.net>
BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>





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             reply	other threads:[~1999-02-09 12:14 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-02-09 12:14 BenH [this message]
1999-02-10  2:35 ` NuBus PowerMacs and PDM video Michael R. Zucca
1999-02-10 11:49   ` BenH
1999-02-11  0:22     ` Andre Tomt
1999-02-11 13:49       ` Tom Vier
1999-02-11 14:51         ` Andre Tomt
1999-02-11  3:57     ` Michael R. Zucca

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