Valentin Albillo's HP Collection

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For the historical record and in order to preserve my earliest and/or unreleased efforts in the wonderful world of vintage calculators/computers other than HP or SHARP models, here you'll find a selection of programs I wrote for various models such as the Sinclair ZX81 and several others.

Now, for the first time, they'll be available to download for free, as will existing but still unpublished programs or even new programs I might write now and in the foreseeable future. Stay tuned !

P.S.: All titles ending in (Full Scan) are part of my Project HAM.

PDF Other Programs - Othello for XBASIC (Full Scan)

(In Spanish)

As part of my ongoing endeavor to create a version of my HP-41C Othello program for every system I had at hand, I created this version for XBASIC running on a time-sharing system at my school.

It uses the same logic as the HP-41C original but of course runs much faster and additionally it prints detailed user instructions and also the board after every move. It's written in utterly plain-vanilla BASIC so this version should run on most any BASIC system under the sun with little or no change.

These articles, programs, pictures, their descriptions and other materials created by me are (c) Valentin Albillo, and can be used freely for non-profit purposes as long as (1) the contents aren't modified in any way and (2) the copyright is acknowledged. In plain words, you can download them and use them for non-profit purposes but do not include them in any media and/or site for which you're asking money, do not tamper with their contents and do not say or imply that you created them or that you don't know who created them, you must always give due credit to me.