To activate cheats :
At the Password screen press Square, Triangle, Circle, X, Circle, Triangle
You will get an 'Invalid Code' message. That's fine.
Now go back to the Password screen and enter the following codes...
Triangle, X, Triangle, Triangle, Square, Circle.
Square, Circle, Circle, Square, Triangle, X.
Circle, Circle, Triangle, X, Square, Square
Square, X, Circle, Triangle, Circle, X.
Thanks to Revolution readers Michael Montgomery, Reginald M. Browning and Christie Corpus!