Coinop.org /// kdl

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POLE POSITION II ========================== by: Some Guy I Don't Remember His Name Video board, 30 pins, 15 per side, numbered side is back of board, letters are on component side. Items in parenthesis aren't listed on schematic: 1 Ground A Ground 2 +5 volts B +5 volts 3 (ground) C (ground) (keyway) 4 (ground) D (ground) 5 (ground) E (ground) 6 (ground) F (ground) 7 (ground) H (ground) 8 (ground) J (ground) 9 Red K (ground) 10 Green L (ground) 11 Composite sync (inverted) M (ground) 12 Blue N (ground) 13 Video return P (ground) 14 + sense R (+5 volts) 15 - sense S (ground) CPU board, 44 pins, 22 per side, numbered side is back of board, letters are on component side. Items in parenthesis aren't listed on schematic: 1 Ground A Ground 2 +5 volts B +5 volts 3 (ground) C (ground) (keyway) 4 Ground for shifter D Ground (coin door 1) 5 Ground for brake E Ground (utility panel 4) 6 Brake F Gas pedal wiper 7 Start 0 H Steering 2 (steering pin 1) 8 Steering 1 (steering pin 4) J Right coin counter 2 (utility panel 6) 9 Left coin counter 1 (utility panel 7) K Test switch (utility panel 5) 10 Service switch (utility panel 9) L Coin 2 (coin door 2) 11 Coin 1 (coin door 3) M Start 1 12 Shifter N (ground) 13 (vol. gnd) P vol. gnd for gas 14 (vol. vcc) R vol. vcc for gas 15 Sound 2+ S (ground) 16 Sound 4+ T Sound 1+ 17 (ground) U Audio ground for channels 1 & 3 18 Sound 3+ V Audio ground for channels 2 & 4 19 Sound 1- W Sound 4- 20 Sound 3- X Sound 2- 21 + sense Y +5 for steering (steering pin 2) 22 - sense Z Gnd for steering (steering pin 3) For upright game, connect the following on the CPU board: 18 to T and 19 to 20 to strap sound outputs 1 and 3 together 15 to 16 and X to W to strap sound outputs 2 and 4 together 7 to M for automatic game start (a start switch could go here) 5 to 6 to account for lack of brake pedal Audio outputs need to go to an amplifier (won't drive a speaker directly). Gas pedal is a 5K pot. I've never tried doing this before and don't know if you also need power/audio board hookups or not. If you are using a switching power supply instead (REAL good idea) you will need another way to drive the speakers. It is also assumed you are trying for an upright cabinet and not a sitdown. For all I know, you might be trying to make the worlds first COCKTAIL Pole Position---if so, mount a couple fans!! }