Milton Bradley Super Simon Chip labeled MP3476NLL 4050 WE 8022 PHILIPPINES die labeled MP3476 12 buttons: Player 1 red, blue, green, yellow Player 2 red, blue, green, yellow Decision, Longest, Last, Start 3 switches: Speed, Game, Skill Level 8 lamps (R G B Y for each player) speaker TMS1100 pinout 1 R8 - Speaker 2 R9 - Skill switch 1-4 3 R10 - Skill switch Head-to-Head 4 VDD - 9v battery negative 5 K1 - button matrix 6 K2 - button matrix 7 K4 - button matrix 8 K8 - button matrix 9 INIT - diode and cap 10 O7 - N/C 11 O6 - N/C 12 O5 - N/C 13 O4 - N/C 14 O3 - N/C 15 O2 - N/C 16 O1 - N/C 17 O0 - N/C 18 OSC1 - connected to OSC2 and 100pF disc cap (to VSS) + different resistor depending on speed switch 19 OSC2 - OSC1 20 VSS - 9v battery positive via power switch 21 R0 - Game switch 22 R1 - Player 2 buttons 23 R2 - Start, Last, Longest, Decision buttons 24 R3 - Player 1 buttons 25 R4 - yellow lamps 26 R5 - green lamps 27 R6 - blue lamps 28 R7 - red lamps button and switch matrix K1 K2 K4 K8 N/C R0 Game 1 Game 2 Game 3 Game 4 Game 4 R1 P2 Yellow P2 Green P2 Blue P2 Red R2 Start Last Longest Decision R3 P1 Yellow P1 Green P1 Blue P1 Red R9 Skill 4 Skill 1 Skill 2 Skill 3 R10 Head-to-Head Speed switch Simple = 51K resistor Normal = 37K resistor Super = 22K resistor The unit I got was not working, but I measured a 1K signal on pins 22, 23, 24