I love this. I'm guilty of my own project of this ilk, using Wirth's Oberon RISC chip and a simple Forth-like language based on Joy. So please don't think I'm

I love this. I'm guilty of my own project of this ilk, using Wirth's Oberon RISC chip and a simple Forth-like language based on Joy. So please don't think I'm criticizing OP or this project in what I say next. I think in an actual post-apocalyptic scenario we're probably not going to be using systems like this. The two main reasons are that we don't really need much computation, and that there won't be functioning complex computer machinery (not at any meaningful scale anyway.) I think we'll see bespoke automation based on e.g. clockwork and/or fluidics, but I doubt there will be silicon CPUs (neither old nor new) for quite a while. Silicon requires too much specialized knowledge, equipment, and chemicals to be practical. We have done most of our needful calculations on the abacus, we made rockets (rocket science) using slide-rules. If we allow for simple mechanical PID controllers and such, I doubt there will be a lot of serious demand (to put it in strictly economic terms) for "fancy" general purpose computers.