Hello All, I'm trying to find a *full* , numeric sorted, list of all possible/imposssible commands for the 16F84 (and others). No, I'm not trying to generate an assembler that will use these commands as a means to signature the code (most controllers won't let you read the program-memory contents anyway), but to introduce some "break-point" instructions into the source-file. When my dis-assembler/single-stepper hit's one of those, it should perform a special function. So, does anyone know ? By the way: I tried to use MPASM to generate a list of usable opcodes, but I do not really trust it's dis-assembler (it disassembles an opcode to "TRIS PORTD" just fine, but an 16x84 has got only *two* ports ....) Regards, Rudy Wieser -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.