Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.
It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.
All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.
From version Free42 2.0.21:
Fixed complex SQRT so it returns exact results when Re(x) = 0 and Im(x)/2 is a perfect square.

VARMENU would step through rows of multi-line menus in the wrong order. (You needed a function with 13 or more MVARs to notice this.) Fixed.

When printing to GIF, changing the filename did not cause the GIF numbering sequence to restart at 1. Fixed.

When printing to GIF, output files are now flushed and closed immediately when they reach their maximum height.
All versions
June 24, 2018