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Mail Archives: djgpp/1995/08/29/05:20:22

Date: Tue, 29 Aug 1995 01:30:02 -0700
From: Sam Vincent <svincent AT cs DOT sonoma DOT edu>
To: bsg AT basistech DOT com, djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: MAPPED DPMI VIDEO MEMORY

I don't quite think you understand...
All he wants to do is be able to use a continuous address space for accessing
the display memory (which is at offset 0xa0000 within conventional memory
selector space) rather than having to bank himself.. etc.. (i.e.
simulate djgpp v.1.x's 0xd0000000, but from within dpmi...)

It is quite obvious that any dos program writing directly to the screen
would be *seen* by windows, and would have its screen saved/restored etc..
between switching between windows and your program...
We are programming windows apps here.. just Dos..
and yes, those little dos sessions under windows *will* run your code
in 32-bit protected mode when you use dpmi calls to get to protected mode..

-Sam

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