Ah, I have fond memories of hacking on that architecture for DEF CON. We wrote a lot of tools for it: by the end (less than 3 days after getting the spec), we had disassemblers, debuggers, binary rewriters, and even rudimentary decompilation support. It was quite a fun journey :)
https://2017.notmalware.ru/89dc90a0ffc5dd90ea68a7aece686544/... (link from https://blog.legitbs.net/2017/07/the-clemency-architecture.h...)