HP-1973 is a Python simulator app for the retro HP-45 calculator and 5 other HP ROMs, written by Sarah K. Marr
The app was written in Python and started out for the HP-45 (ROM is included) but finally included also the HP-35 and the HP-80, as well as three others. For macOS and Windows you could just run the included executables, or with the Python code, this will run fine on Linux if you have Python...
