There are a lot of simple ways to run a Lisp system.
This is a very different thing, it's a Lisp Machine operating system running on a CPU emulator (~ from mid 90s). With its own Lisp, process scheduler, garbage collector, GUI, X11 client, file systems, network stacks, various network client and servers, configuration system, integrated development environment, database, ...
This is a very different thing, it's a Lisp Machine operating system running on a CPU emulator (~ from mid 90s). With its own Lisp, process scheduler, garbage collector, GUI, X11 client, file systems, network stacks, various network client and servers, configuration system, integrated development environment, database, ...