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Full Version: HP42S & 28S Speed Up Programs online
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http://members.aol.com/hpgene/hp42fast.htm

This one is for the HP42S. Unfortunately, one can only "programmatically" speed this up on early HP42S models aka made before 1990 or so.

http://members.aol.com/hpgene/28sfast.htm

This one is for the HP28S, all versions (I think!).

More information like this can be found on the HPGENE website at this URL:

http://members.aol.com/hpgene