Southwest Technical Products 6800, complete with AC-30 cassette interface and PR-40 printer.
Large Scale Systems Museum (LSSM) - mact.io - Pittsburgh, PA

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Southwest Technical Products 6800, complete with AC-30 cassette interface and PR-40 printer.
Large Scale Systems Museum (LSSM) - mact.io - Pittsburgh, PA

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Southwest Technical Products
Michael Holley is the resident SWTPC 6800 expert, and it’s a system I’ve always been fascinated with. Considering that there weren’t very many options in 1976 for kit computers, this would have been a big deal. Presentations, exhibits, repair discussions, and similar fare are in Mike’s repertoire involving SWTPC gear (usually SWTPC 6800-centric stuff), so needless to say that he’s very technically inclined.
We discussed this early Motorola 6800 based system one on one, then briefly compared and contrasted it with the 6808 based architecture of the Heathkit Hero robots. So much of this machine is just RAM cards. If I were to pick a machine closest in design to what I understand, this would be it.
Michael also had a few fun things like a nixie clock kit that would have been sold in magazines, just like many other offerings from Southwest Technical Products. Don Lancaster’s 1973 TV Typewriter is one of the more famous examples, bringing the glass terminal into the hands of many for the very first time.
Justin “DJ” Scott also had a SWTPC 6800 on display! The South West Technical Products Corporation made the Motorola 6800 processor accessible in a microcomputer form factor.
DJ had his connected to a Hazeltine 1500 terminal, as well as a SWTPC cassette tape adapter, and a SWTPC Minifloppy Disk System. You will note that the full-height 5 1/4″ floppy drive was replaced with a 3 1/2″ floppy drive.
Lastly, he had a pair 6800-powered trainers. One being a Heathkit ET-3400 with the memory I/O expansion, the other being an Elenco XK-300.
Note the wind-up paper tape spooler for coiling up a tape after it has been spit out of the ASR-33 on the floor.