From: "Damian Yerrick" <web DOT poison AT pineight DOT 8m DOT com>
Newsgroups: comp.games.development.programming.misc,comp.os.msdos.djgpp
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Subject: Re: A choking start for DPMI
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NNTP-Posting-Date: Thu, 14 Oct 1999 06:07:57 GMT
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Date: Thu, 14 Oct 1999 06:07:59 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com


Ben Davis <ben AT vjpoole DOT freeserve DOT co DOT uk> wrote:
> Damian Yerrick wrote:
> >Ben Davis wrote:
> >> I've written a rather hyperactive game using DJGPP
> >> and Allegro, in DOS.
> >
> >Is it as insane as my Insane Game, part of DOSArena?
> >http://come.to/yerrick
>
> I've tried your game. Sorry to disappoint you, but I'm afraid mine is MUCH
> more insane. And there are more to come when this one's finished. If you
> want to match mine, you'll have to make it so that nothing on the screen
> ever stays the same.

URL of work in progress?

> >I assume that by "digitised music" you mean a wave file
> >that has been tightly compressed by a lossy algorithm.
(implying MP3 using libamp)

> No. I'm using high quality PCM samples, but not a whole
> piece of music; just a sample of each instrument. Then I'm
> sequencing them. It's a very memory-efficient and good
> quality method.

Oh, software wavetable emulation. Allegro coders
call this method DIGMID. Is that what you're using?

> >You're also using Allegro. Look up LOCK_FUNCTION()
> >and LOCK_VARIABLE(). Those are portable shortcuts
> >to whatever those functions are called on your platform.

> I'm using these anyway, for variables used in interrupts. I might try
> locking everything, and I am told there is a way of doing this
> automatically. I'll see what happens when I do.

Lock what you use most. That's the guideline.


Damian Yerrick
http://come.to/yerrick