VT78/MR78/OS78 (was Re: Vintage Computer Forum)

It's not that I never work with microcontrollers. I have built several AVR-based devices and am building an 8051-family device. Those items require flexibility far beyond clocking a bunch of ROM reads. They have to interpret command streams from larger processors and have complex behavior (well over "here's your next byte"). They need a microcontroller. I'm not sold on the design-time/construction tradeoff for a peripheral for a VT78 - the market for that is small enough I could probably hold all the devices in one hand - not worth putting large amounts of effort into designing something completely new. Pick your battles and your toys. Sometimes, a 555 LED flasher is easier and cheaper than a microcontroller even though you can do it either way.