Subject: Re: [stella] Re: the big sprite|
From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 07 Apr 1998 20:07:11 +0200
At 14:39 06.04.98 -0400, you wrote: >Alright, playfield is out. The ball is still possible, even without >branching. Assuming Y is used as the counter during the draw-sprite >routine, and the stack has been preset to ENABL: > >TYA >SBC BallY >AND #$F8 ;this is a constant for ball height - must be multiple of2 >PHP >PLA ;to reset the stack pointer A clever idea, but AND does not affect the carry bit. You certainly meant ADC #hight, which doesn't have to be a multiple of 2, right? Ciao, Eckhard Stolberg -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/stella.html Don't post pirate BINs to Stellalist. Be a programmer, not a pirate. Write the best game, win framed autographs of famous Atari alumni!!