free42

v 2.5.20

a HP-42s Simulator

Free42 is a complete re-implementation of the HP-42S calculator and the HP-82240 printer. Free42 was written from scratch, without using any HP code. You do not need any ROM images in order to use it, yet it is fully HP-42S compatible.

http://thomasokken.com/free42

To install free42, paste this in macOS terminal after installing MacPorts

sudo port install free42

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