Re: System card Easter Egg

@> I recall that there was a system card which had a debug mode in it, which 
@> could be revealed by a particular sequence of keys on the pad.

 From the Turbo List cheats file (http://joyce.eng.yale.edu/~bt/turbo --> 
cheats):

System 1.0 CD Card
Memory Dump Mode: At the title screen, press and hold 
                  Up + Right + I + II, then press Select. 
                  Release all keys.

-bt