>PSIM has lots of trouble under os/2.  It almost always crashes for some
>reason.  Is this only me? Hope it is.

I dunno:  I haven't gotten far enough to crash yet  ;-)

I'm really surprised to see this kind of flakiness,  though:  it's clear that
there's a lot of thought and talent behind the Parallax designs,  and they put a
lot of work into things like documentation and the "app notes" that most of
their competition does poorly,  if at all.  You just don't expect to see a produ
ct
with that kind of support have diagnostics that simply say "ERROR",  beep,
and give up.

I went through the Parallax BBS last night,  and found little help or
encouragement.  I found someone who'd had problems with another product
(the Stamp downloader) who'd solved them by enabling access to the hardware
timer,  but that didn't help.

Worse,  I downloaded a "diagnostic" routine for the ClearView that says it
failed verifying that memory had been cleared.  No indication of where,  alas:
it just said "ERROR" instead of "OK".  It runs the tiny sample programs I've
tried okay,  but I'm worried that there's a bad RAM chip or something that'll
screw up a schedule that's already impossibly tight.

Interestingly,  I put my serial line monitor on the CV to see if I could spot th
e
problem,  and it complained incessantly about framing errors at every baud
rate I tried.  I wonder if they're running a non-standard rate...

Ran