From: Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Watcom vs djgpp
Organization: Pin Eight Software  http://pineight.8m.com/
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NNTP-Posting-Date: Fri, 21 Jul 2000 16:00:45 GMT
Distribution: world
Date: Fri, 21 Jul 2000 16:00:45 GMT
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Fri, 21 Jul 2000 11:32:16 +0200, "Eli Zaretskii"
<eliz AT is DOT elta DOT co DOT il> wrote:

>> From: Nick DiToro <NDiToro AT ati DOT com>
>> Date: Thu, 20 Jul 2000 20:10:30 -0400
>>
>> 1) How tough is it to port Watcom code?
>
>It depends.  Some factors that might matter:
>
>  - does the source use inline assembly?

Don't the latest GCC and Binutils support Intel syntax?

>  - how much of the source accesses memory-mapped hardware by using an
>    absolute address, like this:
>
>	     char *video = (char *)0xa00000;

In that case, look at the Allegro sources to see an example of how to
do it right.

>  - how much of the code calls real-mode interrupts through int86 or
>    int386 and their ilk, and expects them to transparently support
>    buffers in protected-mode memory?

__dpmi_int()

>  - does the code install interrupt handlers?

Again, the Allegro sources have useful examples.

-- 
Damian Yerrick
"I refuse to listen to those who refuse to listen to reason."
See the whole sig: http://www.rose-hulman.edu/~yerricde/sig.html

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