Scroll speeds: Press Top Left, Top Right, Top Left,
Top Right, Center at the "Select Music"
screen. Repeat this code to cycle through 2x, 3x, 4x, 8x, and
random speeds.
Flash appearance: Press Bottom Left, Top Left, Bottom Right, Bottom
Left, Top Right, Bottom Right, Top Left, Top Right, Center
at the "Select Music" screen.
Vanish appearance: Press Top Left, Top Right, Bottom Left, Bottom Right,
Center at the "Select Music" screen.
Non Step appearance: Enable the "Vanish appearance" code, then
press Top Left, Top Right, Bottom Left, Bottom Right, Center
at the "Select Music" screen.
Mirror turn: Press Bottom Right, Bottom Left, Top Right, Top
Left, Bottom Right, Bottom Left, Top Right, Top Left, Center
at the "Select Music" screen.
