Free42 ist eine freie Re-Implementierung des programmierbaren wissenschaftlichen RPN Taschenrechners HP-42S , der von 1988 bis 1995 von Hewlett-Packard hergestellt wurde und dem HP-82240 Drucker. Free42 ist eine komplette Neufassung und enthält keinen HP Code. Es werden keine ROM Abbilder benötigt um es zu verwenden. Dennoch ist es völlig kompatibel zum HP-42S.
Free42 is a complete re-implementation of the HP-42S scientific programmable RPN calculator,was made from 1988 until 1995 by Hewlett-Packard 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.
Quote: Free42 HISTORY
28-08-2009: release 1.4.54
* The new BCDFloat code, introduced in version 1.4.52, uses a different
convention for representing NaN and infinities: instead of using special
values in the exponent, it now uses dedicated flags, and has a narrower
exponent field. The code that converts between decimal and binary, when
switching between Free42 Decimal and Free42 Binary while keeping the same
state file, did not deal with this new convention, and, as a result,
switching between those versions could cause numbers to become NaN or
Infinity when they shouldn´t.
This release fixes this. It is only relevant to those who switch between
Free42 Decimal and Free42 Binary.
17-08-2009: release 1.4.53
* Decimal version: fixed a bug in the subtract routine that could cause
incorrect, malformed results in some cases, e.g. 4 ENTER 3 / 1 - 3 * 1 -
returned -:.E-25.
Related links:
[ Diverse / Misc Emus ]
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