Yes, and the
80186 -- 68010.
Both existed but were not popular in many systems. Both equally
quite rare in that regard.
Not entirely true.
Clearly the 68010 was quickly eclipsed by the 68020 and thus showed up in
relatively few systems. This is different, BTW, than not being popular.
OTOH, the 80186 (including the AMD Am186 line) was a wildly successful chip
in the embedded systems world. Vast numbers of devices based on the '186
are out there, often because one could use the IBM PC and follow-ons,
hardware & software, as development platforms on the (relative) cheap.
Ken
And dont forget that the MAD 1 Computer used a '186...
(saw one at Comdex '84 and thought it looked cool)
Peter Wallace