Subject: Re: [stella] High Scores From: emooney@xxxxxxxxxxxxxxxx (Erik Mooney) Date: Thu, 26 Aug 1999 00:44:23 GMT |
>a) come up with a top-5 list of games that this would be best for >b) disassemble these games and find out > 1) how the score is encoded > 2) how the game selection is encoded > 3) how the game mode (in play or not in play) is determined. Missile Command: The score is six BCD digits: for player 1, it's RAM location $F3 for the highest two digits, $F1 for the next two, and $EF for the lowest two. Add one to all those locations for the player 2 scores. The current game number can be found at location $E9. It appears that $E8 contains 00 if the game is not playing and 01 if it is, though I'm not 100% sure. River Raid, I can't figure out how the score is stored. Does anyone have, or can cook up, an emulator where I can play a game while watching the RAM locations also onscreen? That'd make this a bunch easier... -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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