That sounds like the Transputer model -- there was
quite a diversity of
devices accessible via the standard serial links: I/O, storage,
graphics, networks, etc.
Well sorta, but in that model you'd bit-bang all of that stuff with
(mostly) identical Transputers.
My point was that Inmos sold a diversity of adapters interfaced through
the links. It *wasn't* necessarily done with Transputers bit-banging
(they wouldn't necessarily be fast enough anyway - e.g. video).