delorie.com/archives/browse.cgi   search  
Mail Archives: djgpp/1996/05/14/14:44:37

Message-ID: <3198B45B.316C@eelab.newpaltz.edu>
Date: Tue, 14 May 1996 13:27:07 -0300
From: John Fortin <fortin44 AT eelab DOT newpaltz DOT edu>
MIME-Version: 1.0
To: djgpp AT delorie DOT com
Subject: 0xa0000 and dpmi_segment_to_descriptor

I've been reading the docs, info, and DPMI specs. I also have read the 
mail archives in order to understand why we must use near or far pointers
to gain access to the video buffer.  

I don't understand why we can't use a function such as 
dpmi_segment_to_descriptor to map this to a linear address without
the disadvantages of the 'fat ds' method.  What am I missing here??
This is supposed to give a 64k block, which is just the size of the 
buffer in memory. 

Thanks for clueing me in!!

John Fortin
fortin44 AT eelab DOT newpaltz DOT edu

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019