From: Reinier Heeres <rwh AT worldonline DOT nl>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Keeping speed with slow CPUs
Date: Fri, 06 Feb 1998 19:35:45 +0100
Organization: World Online
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Jean-Luc Romano wrote:

> Hi, again.
>
>    while (!quitflag)   /* event loop */
>    {
>       /* Event loop stuff */
>
>       prepare_buffer();
>       regulate();
>       blit(buffer, screen, 0, 0, 0, 0, SCREEN_W, SCREEN_H);
>    }
>
> And my regulate function is:
>
> void regulate()   /* uses the timer to make sure a min amount
>                      of time is spent each event loop */
> {
>    while (timer < 100_milliseconds)  /* has .1 secs passed yet? */
>    {
>       /* Do nothing -- just wait out the timer */
>    }
>    timer = 0;  /* once done waiting, reset the timer */
> }

Hi,

You really should install a timer by hooking interrupt 0. It will be
called 18.2 times/sec. Let your handler set a flag that it's allowed to
draw a new frame...

Reinier