Kudos to the other GP2 hackers, especially Jedrus and Frank Ahnert, for supplying some of the technical data needed to write HOF2Lap. Thanks also to the many HOF2 drivers (and others) who submitted bug reports and suggestions.
HOF2Lap was written using DJGPP, a free 32-bit compiler for MSDOS. More details about DJGPP can be found at http://www.delorie.com/djgpp/. It uses the LZO library by Markus Franz Xaver Johannes Oberhumer, and cryptlib by Peter Gutmann, Eric Young, and Colin Plumb.