Okay I did the conspectus. These are the results of my searching and weighing things up: Arduino Due https://www.aliexpress.com/item/1005010551832566.html Raspberry pi pico https://www.aliexpress.com/item/1005013255261668.html These will support the broadest range of features of Stefan's BASIC. A pity that I wasted money on these Atmega1284s, but I have not damaged them, and they may prove quite useful somehow in the future. These displays are also interesting: https://www.aliexpress.com/item/33015586094.html https://www.aliexpress.com/item/4001223564156.html #retrocomputing #Permacomputing