Subject: Re: [stella] 2600 frying From: Erik Mooney <erik@xxxxxxxxxx> Date: Tue, 19 Apr 2005 00:18:32 -0400 |
On Mon, 18 Apr 2005 20:52:45 -0400, you wrote: >Asteroids: Hold down RESET and fry until you see 2 asteroids on the right >side of the screen. Every game version will then have all white (slow >moving) asteroids that start in the same spot and drift to the right, and a >safe (predictable) hyperspace (youll always appear in the upper right >corner). All saucers will appear from the same spot (the upper left corner) >and move straight across the top of the screen (the large one will >continually shoot up while the little one will fire left and down). Also, >small saucers will appear around 7,300 points and continue to do so until >the score rolls. > >Status: confirmed to work > >Atlantis: causes all ships to be the same type, and to fly from >left-to-right only. The Imagic logo will disappear and the game will start >automatically. > >Status: confirmed to work Interesting. Both of those are almost certainly the random number routine getting stuck on producing all zeroes. Many random-number algorithms just keep outputting zero if their seed state gets set to zero, including the bit shift register style of algorithm that works well on the 2600. This could definitely be caused by RAM for the random number seed getting cleraed while the 6502 either kept running or had PC reset to bypass the usual startup init routine for the random numbers. Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
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Re: [stella] 2600 frying, Fred Quimby | Thread | Re: [stella] 2600 frying, Adam Wozniak |
Re: [stella] 2600 frying, Fred Quimby | Date | [stella] Black Box Development syst, Richard Kennehan |
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