Earlier quoted context omitted.
Thanks for asking. Yes, the calculator itself was the first "computer" that I owned, and there was nothing else to connect it to, or to emulate it with. (I had my own PDP-11 at work, and I had previously done batch-mode programming on an IBM 370.) I bought my 41C in 1979 (made in the US!), and spent several thousand dollars on peripherals over a period of about three years. It was a big investment in a platform that…
To this day, I still use a linux desktop simulator for the HP-41CX calculator! The original website seems now offline: https://nonpareil.brouhaha.com/ But the code is still available: https://github.com/brouhaha/nonpareil
I took a look at nonpareil, and decided to give it a try. There were a few dependencies that weren't listed, and I had to change wasm.h to wasm_y.h in three files, then it wouldn't build on an nfs mounted filesystem because it was trying to run an executable (str2png). Eventually I got it installed and working. Very cool!