This makes me wish I took photos of Diversi-Dial (aka D-Dial) setups, which somehow impressed me more due to how much they accomplished with much much less hardware.

They were able to set up a 7 x 300baud modems in real-time chat system on an Apple ][ . The original marketing called it a CB (Citizens Band) Simulator. They were able to run up to 1200baud, but I never saw one of those functioning.

As if 7 people chatting through a single 6502 wasn't impressive enough, many of them dedicated one or two of their lines to interlinking with other D-dials.

Talk about an esoteric memory.

- https://www.ddial.com/ - https://en.wikipedia.org/wiki/Diversi-Dial