More impressively, not even a requirement for BIOS, MBR, etc.
https://people.inf.ethz.ch/wirth/ProjectOberon/index.html
It runs on a FPGA. Minimal hardware specificity.
Don't be a victim of corporate hegemony. Work using sound engineering
concepts.
Regards, ... P.
--
mobile: +1 778 951 5147 <= still working
VoIP: +1 778 508 0020 <= new & working
projects: en.wikibooks.org/wiki/User:PeterEasthope