Data is ON in the green-flag screen. Turbo mode gives no significant speed boost
This generates successive members of Conway's look-and-say sequence (see http://en.wikipedia.org/wiki/Look-and-say_sequence and http://oeis.org/A005150 for more about it) The variable overloads after a very soon after starting (so you can't see the entire thing), and the "thought bubble" overloads a little while after...
