A few chips, in fact: https://en.wikipedia.org/wiki/AY-3-8500 https://en.wikipedia.org/wiki/AY-3-8500 http://www.pong-story.com/gi.htm http://www.pong-story.c

A few chips, in fact: https://en.wikipedia.org/wiki/AY-3-8500 https://en.wikipedia.org/wiki/AY-3-8500 http://www.pong-story.com/gi.htm http://www.pong-story.com/gi.htm It was an interesting era in chip design.