M68360 SMC in uart mode

In article <DL17r3. @strata.com>, Jim Short  <jss> wrote:

May or may not be relevant -- Last spring I did a project with this chip and
had terrible problems with drift in the serial port clock.  One set of
symptoms was similar, namely that if you are sending a continuous string of
characters you would slowly slide past the window, get a garbled character,
and them more good ones.

You might try watching that clock with a continuuous store scope or some
such -- if the waveform starts getting "fuzzy" on the screen then it is
drifting.  Also, there is always the old "chill spray"/"hair dryer" test.

                                                jmk