pinouts for Qbert (Gottlieb, 1982) submitted by David Shuman (shu@caltech.edu, essayes@tel

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pinouts for Q*bert (Gottlieb, 1982) submitted by David Shuman (shu@caltech.edu, essayes@telerama.LM.com) MLB = Main Logic Board SB = Sound Board -- = No Connection Main Logic Board (MA-378) 60-contact edge connector (A1P1) A +5 VDC 1 GND B +5 VDC 2 GND C +5 VDC 3 GND (COIN RETURN) D -- 4 -- E COIN 1 (OPTIONAL) 5 COIN LOCKOUT (OPTIONAL) F COIN METER 6 KNOCKER* H -- 7 -- J -- 8 -- K -- 9 -- L -- 10 -- M A6P1-2 (SB) 11 -- N -- 12 A6P1-4 (SB) P -- 13 -- R SELECT TEST SW** 14 GND S COIN SW #2 15 STEP TEST SW*** T COIN SW #1 16 1P START U -- 17 2P START V -- 18 UP-LEFT W -- 19 DOWN-RIGHT X -- 20 DOWN-LEFT Y UP-RIGHT 21 -- Z A6P1-8 (SB) 22 A6P1-9 (SB) a A6P1-11 (SB) 23 A6P1-12 (SB) b VERT. SYNC 24 RED c -- 25 BLUE d VIDEO GND 26 GREEN e HORIZ. SYNC 27 +11.5 VDC f +5 VDC 28 GND h +5 VDC 29 GND j +5 VDC 30 GND *connects to one end of the knocker solenoid, which is wired in parallel with a 1N4004 diode. The other end of the solenoid connects to +30 VDC, which also provides power to the audio amp. **closed = game; open = test. ***normally open. Sound/Speech Assembly (MA-216) 24-contact edge connector (A6P1), only one side of board has contacts. A -- 1 +12 VDC REG. B -- 2 A1P1-M (MLB) C -- 3 -12 VDC D -- 4 A1P1-12 (MLB) E -- 5 +5 VDC F -- 6 GND H -- 7 AUDIO OUTPUT J -- 8 A1P1-Z (MLB) K -- 9 A1P1-22 (MLB) L -- 10 +30 VDC REG. M -- 11 A1P1-a (MLB) N -- 12 A1P1-23 (MLB)n.

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