Date: Thu, 24 Apr 1997 09:30:59 +0000 (   )
From: "Gurunandan R. Bhat" <grbhat AT aditya DOT unigoa DOT ernet DOT in>
To: Ove Kaaven <ovek AT arcticnet DOT no>
Cc: djgpp AT delorie DOT com
Subject: Re: DPMI and Page swapping
In-Reply-To: <5jonoc$n00$1@troll.powertech.no>
Message-Id: <Pine.LNX.3.91.970424092240.577A-100000@aditya.unigoa.ernet.in>
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On Fri, 25 Apr 1997, Ove Kaaven wrote:

> But yes, page tables also have a "Present" bit. When this bit is
> clear, everything else in this entry is ignored, and is frequently
> used by the memory manager to store the position on disk where the
> page is saved.

could you mail me some details about page related fields in the offset. 
for example could you confirm the following. i do not yet have a reliable 
text available to me :( 

page tables are two level tables when paging is enabled, the first 12
bits are the offset from the page base, the next 10 point to the page 
base in a page directory, and the highest 10 relate to the page directory 
itself. where does the "page present" bit located. and if this bit is not 
set, where is the present physical location (on disk) stored?