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.Free42 is provided as ready-to-run executables for Pocket PC, Microsoft Windows, PalmOS, and Linux (x86). On Mac OS X you can use it as a free Dashboard widget. There are also Sharp Zaurus / Nokia 770 versions contributed by fellow HP-42S enthusiasts.What\'s New in This Release: [ read full changelog ]· When EDITN was active, you could overwrite the edited matrix with a scalar· using STO, or delete it using CLV -- and then you would be stuck in the Matrix Editor, and even CLALL couldn\'t get you out. Fixed; you will now get the Restricted Operation message when you try to change or delete the active matrix behind EDITN\'s back.