From: Radical NetSurfer <radsmail AT juno DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: They do NOT run the same! W95/DOS!
Date: Tue, 27 Jun 2000 15:27:18 -0400
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References: <s97hls8hlhbikfhjkaut11p3lavr480eq2 AT 4ax DOT com>
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

n 27 Jun 2000 18:18:53 GMT, "doug" <deleveld AT dds DOT nl> wrote:

>Radical NetSurfer <radsmail AT juno DOT com> schreef in artikel
><s97hls8hlhbikfhjkaut11p3lavr480eq2 AT 4ax DOT com>...
>> PLEASE HELP ME UNDERSTAND THE FOLLOWING:
>> 
>> Why is it I find that most things compiled from a Win95 DOS shell
>> appear to work just fine... if allegro is used, the graphics and mouse
>> support is perfect....
>> do into pure MS-DOS 6.22 and try to run the EXACT same program
>> and you get CORE-DUMPS and the MOUSE will HANG-THE-COMPUTER!
>
>I don't know if this will help, but the DPMI server of DOS and of windows
>are different.  
>They handle (among other things) NULL pointer stuff differently.  That may
>be a part of your problem.
>
>Hope this helps,
>
>Doug

Elaborate a little more, and it could be enlightening for all of us.
What examples provide clues as to when/why stability issues come into
play....
It was fine until I started doing:
  destroy_bitmap(da_bmp);
  da_bmp=NULL;

in DOS...this seems VERY NAUGHTY INDEED!

and why the heck do my Filelists FAIL to find files, even when running
in PURE msdos 6.22... sheesh! (on systems that do not (repeat NOT)
have Win95/98 installed).

thanks for the input!