From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <6099f03d6b7738ec365b3975b175e558@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] non-BIOS boot
From: rsc@plan9.bell-labs.com
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Date: Mon, 27 May 2002 13:47:07 -0400
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> Anyone out there have any pointers towards documentation
> on accessing devices via physical memory? Like, apparently
> video memory to write text is mapped at 0xb8000.. do other
> devices become mapped like this? Is this documented
> information? If so, where? I've read through most of the
> intel CPU documentation, but, I havent seen anything related
> to this topic. I'd prefer not to use the BIOS in my MBR

google for ralf brown's interrupt list.
there's a file called memory.lst that you
might find useful.