To: djgpp AT sun DOT soe DOT clarkson DOT edu
From: SAM AT argonaut DOT demon DOT co DOT uk
Organization: Argonaut Ltd.
Date:         30 Jun 93 18:51:55 GMT
Subject:      DPMI & screen memory

I have just been looking at the Rational Systems 32 bit extender, and
I noticed that it appears to map the low 1 Mbyte of memory into
the same segment as everything else, even under DPMI - a pointer
to video memeory is 'near'. They put the low 1M at 0, and the
code/data at 4M in linear space.

I was under the impression that DPMI didn't let you at the page
tables, so how are they doing it?!


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Sam Littlewood                                   sam AT argonaut DOT com
Argonaut Software Ltd.                   saml AT cix DOT compulink DOT co DOT uk
         Tel: +44 81 200 5777  Fax: +44 81 200 9866