I'm not aware that IBM ever used an 80186 in a PC.
The integrated
I can't think of such a machine either.
peripherals are utterly different from the XT-AT
standard. Tandy did
try to use one in the 2000, but the incompatibilities were considerable.
Curiously, the USR Courier modems used an 80c188, as did other peripherals.
I once swa one in a laser printer. Somwehere I have an X terminal that
uses an 80188 for I/O (keyboard mouse ethernet, etc). The X server, BTW,
runs on a 34010
-tony