Most up-to-date 48 emulator code (for command line)

[Claudio L.]

If it helps, the newRPL command line project was resuscitated by our friend erazor, if you pull latest sources you can build it. Some things need to be updated, for example it uses standard input and output. there's currently no way to input the special Unicode characters that RPL typically needs.
It might work as-is in native utf8 environments like Linux, I don't know if Windows would handle that well. In any case, it's not hard to replace it with a better input routine that supports some keyboard assignments, etc.