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Showing posts from September, 2026

MCU-less teletype terminal

T his is a project I've had in mind for a while as a possible Retro Challenge 2026 (a bit later in the year).  It has come together sooner than that thanks to Hackaday introducing a Retro Computing Contest and the imminent RC2014 Assembly . Since I've been keeping logs over there , I haven't blogged about it here before now and won't repeat too much. The idea was to make a printing teletype terminal that I could use with any RC2014. I wanted to do this without using a modern microcontroller. I've had an Alphacom printer sitting around for a long time that I've been wanting to interface with an RC2014. Appropriate technology for the controller would be a microprocessor such as a Z80 with RAM, clock, serial I/O and a baremetal terminal application on ROM. Yes, I'm describing an RC2014, dedicated to the task of being a teletype terminal. I'm thinking about shrinking this down by using an RC2014 micro, but for now my Classic is doing the job nicely. Develop...