https://en.wikipedia.org/wiki/COSMAC_Elf https://en.wikipedia.org/wiki/CHIP-8
The OS was interesting too: https://en.wikipedia.org/wiki/OS-9
Imagine these 8 bitters were mostly hardwired, with less than a million transistors.
There'll come a day when the final physical 6502, 80486 (etc etc) powers off for the final time, and it seems like these technologies would be worth preserving. (I'm sure this is much easier said than done, not trying to minimise the effort involved.)
Is there a project that does something like this?