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Mail Archives: djgpp/1997/08/02/10:33:09

From: Chris Frolik <frolikcc AT indy DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: real-mode pointers
Date: Fri, 01 Aug 1997 19:35:44 -0500
Organization: IndyNet - Indys Internet Gateway (info AT indy DOT net)
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Message-ID: <33E280E0.F74@indy.net>
References: <33DF967A DOT 2A6C AT indy DOT net> <fPq0HJACN63zEwOT AT talula DOT demon DOT co DOT uk> <33E1B093 DOT 7B69F0FC AT Mathematik DOT TU-Chemnitz DOT DE>
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Robert Hoehne wrote:
> 
> Shawn Hargreaves wrote:
> >
> > >2) Every address in memory can be accessed using the segment:offset
> > >notation
> >
> > Untrue. Real mode segments are 64k in size, right? But they overlap, and
> 
> In general it is true, that every address is accessed using
> segment:offset.
> Also in a flat 32bit environment memory is accessed this way, but there
> the segments called often selectors and the segment size may be much
> larger than 64K.
> 
> BTW: This is probably not what the original poster expected to hear, but
> it is so.
> 
> Robert

Hmm...what about conventional memory?  The FAQ says that it uses 20-bit
addresses, but how can it be accessed using a real-mode pointer?

-Chris Frolik
frolikcc AT indy DOT net

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