This is to develop firmware for a pocket calculator that is a superset of the legendary HP-42S RPN Scientific. We strive to create a serious scientific instrument again like we did with the WP 34S (look here: https://sourceforge.net/projects/wp34s/ ).



WP 43S is going to come close to the ultimate RPN scientific calculator - at least that's what we are trying to achieve. This means it will be instant-on, including all the mathematics you can expect in such a package, all the keystroke programming capabilities you need to solve repetitive as well as iterative problems easily, and I/O channels for reliable backup and easy linking to an arbitrary host computer.



Specs and manuals are complete to 99.7%. Meanwhile, also the target hardware is available. The FW team works on a simulator running under Windows, MacOS, & Linux, and on the target HW. We are just seven so far, living in AUS, D, F, I, NL, and SA . See https://forum.swissmicros.com/viewforum.php?f=2 for our progress. Enjoy!