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From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: GO32 variable ScreenPrimary
Date: Mon, 10 Jul 1995 12:26:37 CDT
Organization: Rice University, Houston, Texas
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References: <DBHvzI DOT 134 AT jade DOT mv DOT net>
Reply-To: sandmann AT clio DOT rice DOT edu
Nntp-Posting-Host: clio.rice.edu
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway: from newsgroup comp.os.msdos.djgpp

> In djgpp version 2, please keep the GO32 standard declaration ScreenPrimary,
> as it is useful as a way to find the realmode address of the current text
> screen as (ScreenPrimary&0xfffff), as the realmode address of the current text
> screen can vary according to whether the PC has a color or mono screen etc.

ScreenPrimary and ScreenSecondary are declared in V2, but you may need to
include go32.h since it is a define string to something in the go32 
structure.  They are already masked to 20 bits
in V2 so they are appropriate for use with the dosmem* routines or the new
nearpointer stuff.