> Yes.  A common use was
>=20
>    3E AF    LD    A,0xAF

6502 has a few similar instructions that you can "jump into
the middle of" and they behave as NOP or are otherwise
harmless. I've used them a little but they're quite niche. I
remember people used to put a string of them together and
they looked like nonsense or data when the disassembler
failed to break them down into mnemonics, masking what
the code actually did

Joe


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