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Date: Fri, 13 May 2005 00:52:21 +0100
From: Bruce M Simpson <bms@spc.org>
To: freebsd-hackers@FreeBSD.org
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Subject: Re: Accessing BIOS memory range
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On Thu, May 12, 2005 at 09:58:10PM +0200, alexander wrote:
> I'm writing a little app in 32 bit x86 (386 minumum) assembly, where I need to access
> some memory in the BIOS range. The real address is 40h:6Ch (virtual = ((0x40<<4) | 0x6C)).

Just use /dev/mem. It will do what you want.

Look at src/tools/tools/pirtool for a simple example.

BMS