Cool, thanks. Although this is a very surface level of understanding, not enough to do any of that. If it wasn't clear, what I described needs multiple people with deep understandings of the specific parts. Like, I said "implement this shitty instruction set in hardware". How - I don't fucking know. I don't speak transistor logic. Well, I haven't tried much, but still.

Also, I take my words back on CollapseOS, having a microcontroller bootstrap other ones is useful in the sense that you can then use the microcontrollers as part of the fab machinery while also not hoarding the real (capitalist) computer and letting someone else use it.