Pinouts for +quot;Tempest+quot; (Atari, 1980) P20: 44pin edge connector component side sol

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--------------------------------------------------------------------------- Pinouts for "Tempest" (Atari, 1980) P20: 44-pin edge connector component side solder side -------------- ----------- GND A 1 GND +5V B 2 +5V C 3 +22 VDC D 4 -22 VDC COIN R E 5 SLAM COIN C F 6 COIN L H 7 SELF TEST J 8 K 9 BLUE GREEN L 10 RED R/G/B GND M 11 COIN CTR R N 12 COIN CTR L COIN CTR C P 13 R 14 +10.6 VDC Y INVERT S 15 X INVERT X OUT T 16 X GND Y GND U 17 Y OUT ~RESET V 18 W 19 X 20 +5V Y 21 +SENSE (+5V) GND Z 22 -SENSE (-5V) P18: 30-pin edge connector component side solder side -------------- ----------- GND A 1 GND +5V B 2 +5V C 3 +22VDC AUDIO- D 4 -22VDC E 5 AUDIO+ ~RESET F 6 H 7 DIR J 8 CLK K 9 FIRE L 10 ZAP P2 START M 11 P1 START N 12 P1 LED P 13 P2 LED +5V R 14 +5V GND S 15 GND Notes: ------ - If you're converting Tempest to run in a cabinet with a horizontal monitor, you can get the game to display correctly by switching the X-OUT and Y-OUT pins, and/or grounding the X-INVERT and Y-INVERT pins. - Once you've got the game displayed correctly, you can then fiddle with the XSIZE and YSIZE pots on the main board to resize the picture until you get something you like. - This doesn't work on all monitors, so your mileage may vary, not only from monitor to monitor, but from board set to board set. Tempest can be very finicky about which hardware it'll co-operate with. ---------------------------------------------------------------------------

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