From: "Mark (UK)" Newsgroups: rec.games.video.arcade.collecting Subject: TECH: Midway Clowns Pinouts - Got them. Date: Thu, 1 Apr 2004 21:49:19 +0000 (UTC) Hi all! I was talking to someone about Midway Clowns, but now I can't find the post, so I'll start a new thread. I've spent the evening on the board I've got. I've got it working, and I've figured out the pinouts for the Sound board. They are: Connector at C/B ---------------- 1 - GND 2 - GND 3 - GND 4 - Player 2 Pot Wiper 5 - KEY 6 - Player 1 Pot Wiper 7 - Pot Common 8 - Pot Common 9 - Start 2 Player 10 - Start 1 Player Connector at K -------------- 1 - GND 2 - GND 3 - GND 4 - ??? Good question ?? I'll come back to this one! 5 - Power On Reset (Ground this to run the CPU) 6 - KEY 7 - Credit 8 - GND 9 - +18v (+12v) for Amplifier 10 - Speaker + 11 - Speaker - The pinouts for the main board are the same as all Space Invaders 1 - +5V 2 - +5V 3 - +12V 4 - +12V 5 - -5V 6-13 are NC (Pin 10 is reset out, not usually used, but I use it to tell if the CPU is in reset) 14 - GND 15 - GND 16 - GND 17 - GND 18 - Composite Video Out I've tried several pots, and it looks like 6k8 linear will work best, but as I don't have one of those, I used a 4k7 with a 1 k resistor, which seems to give a good range. Having played it half a dozen times, it seems like a real cool take on Breakout! Hope that's of some help! Yours, Mark.