This is a Modula-2 system (operating system + compiler + editor) for tiny microcomputers with 64 KB ram : it has a 16-bit address space. Despite being issued from a reverse-engineering of Borland Turbo Modula-2 for CP/M, it has been re-engineered to be run on any platform, provided that the bytecode interpreter is ported to that platform.
Why do you think that https://github.com/modula3/cm3 is a good alternative to Turbo-Modula-2-Reloaded