From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Global Variable space in DJGPP
Date:	Tue, 29 Oct 1996 19:49:12 -0800
Organization:	Three pounds of chaos and a pinch of salt
Lines:	27
Message-ID:	<3276D038.149A@cs.com>
References:	<32769708 DOT 3408 AT dana DOT ucc DOT nau DOT edu>
Reply-To:	fighteer AT cs DOT com
NNTP-Posting-Host:	ppp107.cs.com
Mime-Version:	1.0
To:	Mike Ryan <mdr6 AT dana DOT ucc DOT nau DOT edu>
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Mike Ryan wrote:
> 
> Is there a limit to global var space in DJGPP.  Right now I am making a
> game in Borland C++ 4.51 and I ran out of global space. (64K).
> 
> I was just wondering if there is a global var limit in DJGPP since it is
> protected mode...

Yes, there is a global variable limit:  the available physical + virtual
memory on your computer or 4 *gigabytes*, whichever is less.  There are
substantial advantages to 32-bit addressing.  :)

For more information on DJGPP, visit http://www.delorie.com/djgpp, or
download the file
ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2/readme.1st.

P.S.:  Programming tip - If you need lots of memory, it's always better
to simply malloc() it than to use global variables.  That way you get
around segment limits and other problems.  In Borland, however, you
still need to keep the size of individual structures at 64K or less.

-- 
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| John M. Aldrich, aka Fighteer I  |        fighteer AT cs DOT com         |
| Plan:  To find ANYONE willing to |   http://www.cs.com/fighteer   |
| play Descent 2 on DWANGO!        | Tagline: <this space for rent> |
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