Message-ID: <19990111151945.20057.rocketmail@send101.yahoomail.com>
Date: Mon, 11 Jan 1999 07:19:45 -0800 (PST)
From: Mohamed Saad <bazramit AT yahoo DOT com>
Subject: Re: some questions...
To: djgpp AT delorie DOT com
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Reply-To: djgpp AT delorie DOT com


Hello,

   well... I have already wrote the functions in Assembler and
optimized them to the extreme (the best i could!) but every thing was
made in real mode not protected mode! but as the speed was not so good
(120 fps and i still have not implemented a lot of things), i decided
to switch to protected mode. I really don't think i need to get back
to C after i have written all the functions in Assembler! (i use C as
a skeleton and 90% of the functions are in Assembler).

   the faq does not explain really how can i change a selector. it
merely says "use the macro dos_ds (or what was its name?) defined in
"go32.h"" and that's all! perhaps i need a more detailed info! does
any one know of a tutorial on the net for using assembler protected
mode code?

   thanx a lot for ur suggests,

with love,
   Mohamed El Dawy

>With all due respect, I'd suggest to hold off on the assembler for the
>time being.  Assembler is much harder to maintain and debug, especially
>when you're still learning the whole DJGPP bit.  The first rule of
>optimizing is not to make it fast until you've made it right.  And you
>might be surprised at GCC's code quality, especially if your algorithm
>is good (and if it's bad, writing it in assembler won't help it).
>>    so the question is... How can i use assembler to write the
graphics
>> routines in DJGPP?
>Load a selector for video memory (which the FAQ explains how to get),
>and poke away.  You can get an idea by looking at the generated
assembly
>of your C source (use -S).-- Nate >Eldredgenate AT cartsys DOT com

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