Successfully dumped the #LEGO#Mindstorms#RCX' ROM. This is nothing special and has been done ~25 years ago, see http://www.mralligator.com/rcx/#Rom - but I may have been the first one doing it with bytewise with pbForth and a Python script (pyserial). Unfortunately, I stored every byte twice. :thisisfine: Of course, I also did not avoid some minor pitfalls before (e.g. trying to dump 16-bit signed(!) HEX numbers with minuses before). 🤔 🤓