Xref: news2.mv.net comp.os.msdos.djgpp:5413
From: Enrico Horn <enrico DOT horn AT prakinf DOT tu-ilmenau DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Executable size
Date: Wed, 26 Jun 1996 12:41:27 +0200
Organization: Technische Universitaet Ilmenau
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Message-ID: <31D113D7.139C@prakinf.tu-ilmenau.de>
References: <199606260016 DOT RAA11404 AT netcom2 DOT netcom DOT com>
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To: Marc Singer <elf AT netcom DOT com>
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Marc Singer wrote:
> 
> >
> > Hi All,
> >
> > Is the filesize of a DJGPP created program limited to 640k?  I know you can
> > allocate tons of memory etc, and have lots of fun whilst its running, but can
> > the initial size be greater than this?
> >
> 
> Nope.  I expect that this is in the FAQ.  You can load programs larger
> than system memory, if you want to, but you'll page like crazy.

Are you sure?
I think you are wrong!
As far as I know, you can exes have bigger than 640k because of the way
loading of DJGPP programs work:
Plain DOS loads only that 2k stub at the beginning of the DJGPP
executable. This stub:
   - loads the DPMI server (if its not already installed)
   - enters protected mode through DPMI calls
   - loads your program code (the rest without the stub)
   - starts your program .
So the program is loaded IN protected mode. And that means: You have
theoretically 4 Gigabyte of memory (in reality it depends on the DPMI
server), and your exe can have a size which is larger than that 640k
boundary.

Regards, 
Enrico.
-- 
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