This goes hand-in-hand with the draw_roulette script. It shows you the main RAM addresses that I used to create it and that let you know very important information about which level will finally be selected.
SystemID GEN
00C1EA w u 1 68K RAM Angular position
00C1EF b u 1 68K RAM Angular speed
00C7AF b u 1 68K RAM Level
00C77E w h 1 68K RAM Input
00C1E8 w s 1 68K RAM Timer for speed decrease