Date: Tue, 17 Jul 2001 13:06:45 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: Sterten <sterten AT aol DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: memory under DOS
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On 17 Jul 2001, Sterten wrote:

> When I boot my old DOS6.2  , then  mem.exe /d  always only shows
> 64 MB of RAM , no matter how much RAM I actually installed.
> 
> When I make a boot-disk with WIN98 , and boot from that disk ,
> then mem.exe  shows  all installed RAM.
> 
> But my GCC203 programs still seem to use only 64MB  under DOS.
> While in a DOS window under WIN98 , they seem to make use of all
> installed  RAM.

You don't say how much memory do you actually have installed.  You also 
don't tell the contents of AUTOEXEC.BAT and CONFIG.SYS in both these 
configurations.

Anyway, I'm guessing that what you see is a limitation of some memory 
manager(s) you load in the plain DOS configuration.  See section 3.10 of 
the DJGPP FAQ list for more details and advice how to get more RAM for 
DJGPP programs.