Re: how to tell linux (on x86) to ignore 1M or memory

On 04/19/2007 04:18 PM, Bart Trojanowski wrote:

I need to preserve some state from the bios before entering protectedmode. For now I want to copy it into some ram accessible by real-mode,say the last megabyte visible in real-mode.
What's the easiest way to have linux ignore the megabyte starting at 15M?

Note that real-mode can only access the first megabyte (*) and not the first16. 16MB is the 16-bit protected mode (286) limit.

(*) well, the first 1M + 64K - 16 bytes using segment FFFF assuming A20 isenabled and x > 1 in x86...


Rene.
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- how to tell linux (on x86) to ignore 1M or memory
  - From: Bart Trojanowski <[email protected]>

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