CASMSIM: HP Classic Calculator Microassembler and Simulator


7-Apr-2004: CASMSIM has been replaced by Nonpareil.


Old releases of CASMSIM are still available for download. However, since CASMSIM has been replaced by Nonpareil, it is recommended to use that instead.

CASMSIM is made available under the terms of the Free Software Foundation's General Public License, Version 2.

Source code is available for download.


Peter Monta dumped the HP-35 ROMs optically! He also found and corrected several typos in the HP-45 and HP-55 code.


David G. Hicks has ported the simulator portion of CASMSIM to Java and made it available as an applet that may be run in Java-enabled web browsers.

There is a PalmOS port of CSIM by Jonathan Purvis.

Related web pages

Last updated April 7, 2004

Copyright 1995, 2000, 2003, 2004 Eric Smith

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