Subject: Re: [stella] Invaders update! - inv-beta.bin|
From: Piero Cavina <p.cavina@xxxxxxxxxxxxx>
Date: Thu, 24 Apr 1997 12:30:29 +0200 (METDST)
At 06.17 24/04/97 GMT, Erik Mooney wrote: >- Occasionally, the game calculations code overruns the vertical-blank >interval, causing the screen to jump by a couple lines for one frame.. This used to happen to me too... if you want an estimate of how much cycles you've left for game logic during VBLANK, add an useless loop like this: LDX #timetowaste waste: DEX BPL waste and adjust #timetowaste to the maximum value that does not cause the screen to jump. Ciao, P. -- Archives available at http://www.biglist.com/lists/stella/archives/ E-mail UNSUBSCRIBE in the body to stella-request@xxxxxxxxxxx to be removed.