There are two open source emulators of actual Lisp Machines I would recommend:
Interlisp-D/Medley: https://interlisp.org
MIT CADR: https://tumbleweed.nu/lm-3/
These run an actual Lisp operating system.
Interlisp-D/Medley: https://interlisp.org
MIT CADR: https://tumbleweed.nu/lm-3/
These run an actual Lisp operating system.