When I get around to analyzing the p-code instruction set, the code-compression aspect will definitely get a mention. Stack-based vs register-based instruction

When I get around to analyzing the p-code instruction set, the code-compression aspect will definitely get a mention. Stack-based vs register-based instruction sets are a very clear size vs speed tradeoff. That's also one reason that the Java VM was designed with a stack architecture, though in that case, it was download time they wanted to minimize. The whole thing with UCSD having to essentially "give away" the p-System to a separate commercial entity is a sad part of the history, for sure.