>> are they reliable from a 6502 to another ? (for example mos vs >> rockwell vs synertek) >> or between 6502, 6509, 6510 ? > > Yes, they are all present in 6502/6509/6510/7501/8501/8502. They > are not > present in CMOS 65C02, but it did not make into any production > Commodore > machine. Don't know about Rockwell & Synertek :-( Opcodes $8b and $ab are not predictable in that their result depends on various analog effects; their behaviour can vary on a single physical chip when it heats up, even. Various opcodes are unpredictable in the sense that their result depends on what happens on the data bus while RDY is low. Rockwell and Synertek parts behave identically to MOS parts, except for the analog behaviour (they are made on different processes); same for 6502 vs. 8500 etc. Segher Message was sent through the cbm-hackers mailing listReceived on 2011-11-04 20:00:03
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