I’ve got a piece of arcade history here with me, belonging to @Jagspete.
It’s a 1972/73 Nutting Associates, “computer space ball”, which is, actually a version of the famous atari pong. Nutting Associates are credited with the first commercially available arcade game, “computer space”. If you’re into this sort of stuff it’s worth a google / wikipedia. lots of crossovers with the other pioneers and atari etc.



Inside


So it consists of an off the shelf b&w valve tv, a power supply board, a circuit board, a coin mech, two potentiometers and a play counter. that’s it
There is no computer in it, despite its name, it’s just discreet logic chips:


The board has maybe some damage.
There was some documentation and schematics with the machine, but unfortunately there is no schematic for the logic board.
A scan of the internet hasn’t yielded one, but I got 1/2 a clue on one site I found that suggested maybe using the atari pong schematic as a guide, as this is possibly the same or very similar design.
I’ve got the atari schematic, but it’s poor scan quality and difficult to understand.
I also received, a second unit consisting of tv, poster board, wiring and coin mech, play counter. Sadly no second logic board.
It’s a 1972/73 Nutting Associates, “computer space ball”, which is, actually a version of the famous atari pong. Nutting Associates are credited with the first commercially available arcade game, “computer space”. If you’re into this sort of stuff it’s worth a google / wikipedia. lots of crossovers with the other pioneers and atari etc.



Inside


So it consists of an off the shelf b&w valve tv, a power supply board, a circuit board, a coin mech, two potentiometers and a play counter. that’s it
There is no computer in it, despite its name, it’s just discreet logic chips:


The board has maybe some damage.
There was some documentation and schematics with the machine, but unfortunately there is no schematic for the logic board.
A scan of the internet hasn’t yielded one, but I got 1/2 a clue on one site I found that suggested maybe using the atari pong schematic as a guide, as this is possibly the same or very similar design.
I’ve got the atari schematic, but it’s poor scan quality and difficult to understand.
I also received, a second unit consisting of tv, poster board, wiring and coin mech, play counter. Sadly no second logic board.