• palordrolap@kbin.social
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    6 months ago

    Someone told me every processor used 0xEA

    Not sure if this is a riff on the joke or not.

    Back in the day I dabbled in 6510 code, and up until today hadn’t even bothered to look at a chart of opcodes for any of its contemporaries. Today I learned that Z80 uses $00 for NOP.

    Loth as I am to admit it, that actually makes sense. Maybe more sense than 65xx which acts more like a divide-by-zero has happened.

    The rest of the opcode table was full of alien looking mnemonics though, and no undocumented single byte opcodes? Freaky, man.

    But the point is that not even Z80 used $EA. If the someone was real they probably meant every 65xx processor.