Free42 Free42 v2.5.22 is released. Free42 is a complete re-implementation of the HP-42S scientific programmable RPN calculator,was made from 1988 until 1995 by Hewlett-Packard 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/
http://www.emucr.com/2020/12/free42-v2522.html
