I talked with Parallax tech support about my OS/2 problems.  Not too
surprisingly,  they didn't have an answer.  However,  I told them about the
"introductory special" on the new version of OS/2 that's on now,  and the
guy I was talking with sounded like he might go buy a copy to play with
(they don't have it in-house at all),  so maybe they'll have a little expertise
soon.

After doing a little fiddling with the session parameters to allow more direct
access to the PC hardware,  I got PSIM talking with the ClearView 5X under
OS/2.  Sort of:  it still comes up with comm errors,  and needs to be told to
retry almost every command,  but it's a start...

I took a peek at what was happening on the serial interface while all this
was going on.  It looks to me like there's still a little timing dependence in
the software,  but that the basic protocol for the PC-to-emulator interface
could be ported to other platforms (like linux,  or even the Mac) with only
minor tweaking.  I doubt they'll do much about that anytime soon (I think
the slippages in shipping new products are a sign they're overloaded),  but
the occasional nudge from those of us who prefer not to do DOS may keep
them moving in the right direction.

Ran