Atari System 1 power/video/sound pinouts Typed in by Al McCormick (dmccorm1@students.wisc.edu) Disclaimer: Use at your own risk. If you toast your board, my lawyer won't even give yours the time of day. P101 - power -------------------------------------------------------------------- 1 - RTN 2 - + Sense 3 - +5vdc 4 - +10.3vdc reset (connected to 10.3v unreg from Audio Reg III PCB) 5 - -sense 6 - -15vdc 7 - N/C 8 - RTN 9 - +15vdc 10 - +5vdc 11 - +5vdc 12 - RTN P104 - Credits/misc ------------------------------------------------------------------------- 1 - +5vdc 2 - coin counter 3 - coin counter 2 4 - N/C 5 - Self test 6 - aux coin switch 7 - N/C 8 - key 9 - left coin switch 10 - right coin switch 11 - GND P105 - sound (note outputs are line level and need an external amp to drive a speaker) ------------------------------------------------------------------------- 1 - Self test 2 - Right RTN 3 - Right audio 4 - Left RTN 5 - key 6 - Left audio P108 - video ------------------------------------------------------------------------- 1 - video RTN 2 - blue 3 - green 4 - red 5 - V sync 6 - key 7 - Csync 8 - Hsync