Palamedes Game System: Nintendo System Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Palamedes ========= =>Sound Test: On the title screen, press and hold CNTRL II: A B, and press START on CNTRL I. =>Demo Test: On the title screen, hold down CNTRL II: A R, and press CNTRL I: START.