MCODE: Card_Reader 1G ROM

[Ángel Martin]

(05-13-2019 04:44 PM)Jake Schwartz Wrote:  The initial HP-67 8-Bit Program Codes table appeared at the end of Louis Cargile's article, HP-67 Internal Codes and Quasi-Alphanumerics, from HP65 Notes Volume 4, Number 1, pages 5 - 8 (1977). Some of us remember Lou as the inventor of the HP-67 "Black Box", first described in 65 Notes V4N5 in his amazing article "Zen and the Art of HP-67 Maintenance", starting on page 4. Building that box was my very first soldering adventure :-)

Jake

Yeah, those names do ring the bell...many thanks for the information, will follow up shortly.