Re: [stella] Color-cycling

Subject: Re: [stella] Color-cycling
From: Lee Seitz <lkseitz@xxxxxxxxxx>
Date: Thu, 24 Jul 1997 18:42:50 -0500 (CDT)
Nick S Bensema boldly stated:
>
>IT'S SOFTWARE, I TELL YOU!  SOFTWARE!!!!
>
>Most games use an EOR or ADC on every write to color registers against a
>memory location in RAM which holds zero when there's no attract mode, and
>some pseudorandom number when there is.  I've seen the source code to Combat,
>Defender, and Pitfall, and this is the method used in each of them.
>
>Not all games use the color cycling method as an attract mode.  Some games
>have a "demo game" running, while others run a cute animation sequence.
>See Joust, Ms. Pac-Man, and Moon Patrol.

Thanks for the info.  Even after you've told me what to look for, I
can't find it in the Combat code.  I gotta learn 6507 assembly
someday.

-- 
   Lee K. Seitz * lkseitz@xxxxxxxxxx * http://fly.hiwaay.net/~lkseitz/
Classic Video Games Nexus Maintainer (fly.hiwaay.net/~lkseitz/cvg/nexus/)
   Dare to be stupid.  Do the Donkey Kong.  O-  Finger for Geek Code.
  Live long and prosper.  May the Force be with you.  Up, up, and away!

--
Archives updated once/day at http://www.biglist.com/lists/stella/archives/
Unsubscribing and other info at http://www.biglist.com/lists/stella/stella.html

Current Thread