The Museum of HP Calculators

HP Calculator ROMs

These manuals are reproduced here with the permission of Hewlett-Packard. These Acrobat (version 3.01) PDFs may be viewed on screen or printed. Because they are scanned at high resolution, printing is recommended. Acrobat readers for a large number of platforms may be freely downloaded from Adobe. Blank pages have been omitted from some of the manual scans to save space.

ROM		ROM
HP-41C Advantage Pac HP-41C Auto Start & Dup HP-41C Aviation Pac (41aviat.txt**) HP-41C Circuit Analysis Pac (41Circa.txt**) HP-41C Extended Funcs/Mem. HP-41C Extended IO Module HP-41C Finance Pac (41fin.txt**) HP-41C Games Pac (41games.txt**) HP-41C Math Pac HP-41C Petroleum Fluids Pac HP-41C Plotter Module HP-41C PPC ROM Users Manual HP-41C Real Estate Pac HP-41C Securities Pac HP-41C Standard Applications HP-41C Stat Pac HP-41C Stress Analysis Pac (41stress.txt**) HP-41C Surveying Pac HP-41C Thermal & Transport Pac HP-41C Time Module		HP-71B Forth Assembler ROM (For HP-71 IDS material - see CD 5.) HP-71B Curve Fitting Pac HP-75 barcode ROM module HP-8x Assembler ROM Manual HP-8x Advanced Programming Manual HP-8x I/O ROM Manual HP-8x Matrix ROM Manual HP 9810 Math ROM (partial) HP 9820 Math Block ROM Manual HP 9820 Peripheral Control I Block HP 9820 User Definable Funcs Block HP 9820 Cassette/Spec Prgs HP 9830A Extended I/O ROM HP 9830 Matrix ROM HP 9830 Plotter Control ROM HP 9830 String ROM

Missing Pages

Some volunteers omitted blank pages from the scans and others kept them. While the scans have been browsed for readability and completeness, due to the size of this project, there may be missing or duplicated pages. Any missing pages will be posted at www.hpmuseum.org/cdupdates/ for downloading.

Acrobat Speed

If you find that the Acrobat plug-in for your browser is slow, you may prefer to run the stand-alone Acrobat reader. Download the appropriate reader (see above), go to the pacs directory on the CD and double-click the appropriate pdf file.

Volunteers/Credits

The following volunteers contributed manual scans:

• Wayne Brown: HP-41C Plotter Module
• David Jobusch: HP-41C Petroleum Fluids Pac
• Narmwon Kim: HP-41C Surveying Pac, HP-71B Curve Fitting Pac
• Alex Knight: 9810 Math ROM, 9830 IO ROM, String ROM and Matrix ROM Manual, HP 9820 Math Block ROM Manual, HP 9820 Cassette/Spec Prgs ROM, HP-75 barcode ROM module
• Eric Smith: HP-41C PPC ROM Users Manual
• The rest were scanned by the museum (Dave Hicks)

Notes

Most ROMs do not include code listings because the ROM modules contain machine code. In these cases, the manual scan is included as an aid to those that have a module but no manual.

**File names such as 41aviat.txt refer to files in the roms\41progs (or roms/41progs) directory. These module listings were made as a reference but you should note some limitations:

• There is some mismatch between the 41C character set and ASCII. The most common cases are code 00 which may display as ^@ but which indicates the diamond symbol on the 41 and code 7F which may display as ^?, code ## which may display as | which indicates as the angle symbol on the 41C, and indicates the text append character (sideways T) on the 41. The 41C synthetic programming section can help you translate any other strange characters you find.
• Web browsers and some basic text editors do a poor job displaying these characters. Epsilon for DOS, Windows and OS/2 is one (of many) editors that does a good job of displaying unusual characters.

***HP-67 application pacs were scanned at 1 bit B&W like the others to save space. This causes the shifted key labels on the card pictures to scan black instead of yellow rendering them invisible. Fortunately, the shifted key functions are also described in the instructions area.

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