Free42 — Free Copan Downloads

Free42, with added instructions to access Copan coordinate files, is available for download. Free42 is the work of Thomas Okken. UGL has added instructions to allow users to write programs that can read points, write points, and delete points in Copan coordinate files.

Prebuilt programs for Palm, Pocket PC, and Windows operating systems are available here for download. Two versions of each are available. The binary math version uses the computers floating point processor if one is available. It uses 8 bytes to represent floating point numbers and provides about 16 digits of precision. The decimal version uses a Binary Coded Decimal library, BCD20, by Hugh Steers and offers 25 digits of precision and a wider range (exponents from -10000 to +9999). Each number is represented by 16 bytes of memory.

Each version has its advantages. The binary version is faster and uses less memory. The decimal version offers more precise representation of values. In cases where a program written for the HP-42S relies on exact representation of decimal values is to be run, use the decimal version.

A source code package is also available for those who wish to build their own Free42 programs with Copan extensions. The source code package contains only files that have been modified by UGL and new files provided by UGL. You will need the source code package from Thomas Okken's web site to complete the package. Add the new UGL files to the original Free42 package, replacing any existing files.

Palm

    Download Decimal version
    Download Binary version

Pocket PC

    Download Decimal version
    Download Binary version

Windows

    Download Decimal version
    Download Binary version

Source Code

    Download source code