peteym5 Posted September 24, 2019 Report Share Posted September 24, 2019 (edited) How many use some of these undocumented or lesser known register settings for the Antic, GTIA, Pokey, chips. To create a graphics mode, effect, or sound. I know something called "PRIORITY ZERO" that "OR" effect certain player/missiles to the playfield colors. Player 0 & 1 OR with Playfield 0 & 1, Player 2 & 3 OR with Playfield 2 & 3. I usually set PRIOR to 1 to put the players on top of the play field. What was funny, a few times I forgot to set the PRIOR register and noticed something weird going on, but never thought about actually using the settings. I think there is a Tetris clone out there that takes advantage of it. Edited September 24, 2019 by peteym5 Quote Link to comment Share on other sites More sharing options...
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