I've never used it, but Oberon running on bare hardware might qualify if one is OK with Modula instead of Lisp. https://en.wikipedia.org/wiki/Oberon_%28operati

I've never used it, but Oberon running on bare hardware might qualify if one is OK with Modula instead of Lisp. https://en.wikipedia.org/wiki/Oberon_%28operating_system%29#Native_Oberon https://en.wikipedia.org/wiki/Oberon_%28operating_system%29#...