Date: Tue, 23 Jan 1996 15:31:44 -0500 (EST)
From: Cuthalion / Sliced Bread <enrico AT max DOT tiac DOT net>
To: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Cc: taupin AT lps DOT u-psud DOT fr, djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: djgpp in windows 3.11 DOS window

On Tue, 23 Jan 1996, Eli Zaretskii wrote:

> >  2.a Did somebody experience crashes when running any djgpp program (with
> > GO32 included) inside the DOS window of Windows ?
> > 
> >  2.b I suspect this was due to a memory overlapping between windows memory
> > management and GO32 memory requests. Am I right ? Subsidiary question:
> > has windows 3.11 a memory protection preventing the DOS window writing
> > outside its std allocated area ?
> Win3.1 does run in protected mode, but its protection is only up to a 
> point.  I've seen cases when commercial programs has crashed and brought 
> down the entire system with them.  DOS boxes are protected less than 
> native Windows programs (as far as I know) because they don't run in 
> their private address space.

	You have it backwards, Eli.  Each DOS box runs in it's own virtual
machine, yet ALL WINDOWS APPS run in THE SAME VM.  I have personally found
it very rare that a DOS box has brought down the whole system while
Windows Apps do it all to frequently. 

	Although neither happen all that much, since I try to avoid 
running programmes that crash often.

/***********************************************************************
* Jesse Morris * cuth AT gryphon DOT ccs DOT brandeis DOT edu * jrmorris AT macalstr DOT edu *
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