Having seen all the code busting stuff on this list am I the only person on the list who would rather that code busting techniques were : a) kept quiet, I don't need my code busted thanks. b) rebutted by Microchip. The 16C84 code busting technique is available on at least 2 web sites, and appears to be well documented. WHY don't Microchip respond to these threats to their customers intellectual property ? Do other manufacturers have such duff protection ? My current thoughts are that if it is so easy to bust PIC code then anyone who cares about their code ought to go elsewhere. Robin +-----------------------------------------------------------------------+ | | | robin.abbott@dial.pipex.com | | | | PIC programmers and BASIC development systems from | | FOREST Electronic Developments. Visit our home page at | | | | http://www.ibmpcug.co.uk/~gmwarner/fed.htm | +-----------------------------------------------------------------------+