In article , says...
I don't know OS 6, but OS9 was released at least by 1982


You beat me to it, Dave. IIRC, it was written OS/9, but I'm not sure.
I do remember being impressed with it at the time. I think it required
a 6809 and wouldn't run on a 6800, but again it's been a long time so I
could be mistaken. Didn't it have some sort of dynamic function loading
that was new, at least for micros?

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