Two continues
Hold I and press II at the title screen. A sound will confirm correct code entry.
Sound test
Press Left, Right, Down, Up, Select, Left at the title screen.
One hundred continues
Press Down, Right, Select, Down, II, Down, I, Left, Select, Up, I, II, I at the title screen. Press Run to begin game play.
Arcade mode screen
Hold Select and press Run 57 times to reset the game for a narrow screen.
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