#: 9211 S10/OS9/6809 (CoCo)
    20-Jan-91  13:58:09
Sb: #9206-Eliminator RTC
Fm: Bruce Isted (UG VP) 76625,2273
To: james pottage 71750,2012 (X)

Jim,
  I haven't seen a problem such as the momentary speed up that you describe,
but it sounds like a problem that could be caused by a marginal GIME chip.
Since the 60 Hz tick count of the GIME's VBORD IRQ is used by the RTC clock
module (same as the software clock module) that'd be the first thing to check.
  Do you happen to know what version (1986, 1987, or 1987A - I think those are
the versions the GIME has gone through) GIME chip you have?  If your CoCo 3 is
pretty old I'd suspect it had a questionable 1986 version GIME.
  Oh... before going out & replacing the GIME, sometimes all it takes is a
gentle press to seat it in its socket properly... if you don't mind opening the
case.
  Also, are you using a Multi-Pak Interface, and if so, is it upgraded for use
with the CoCo 3?  If its not upgraded, do that first before you do anything
else.

  Bruce