Yuck, yuck, yuck.  Stupid I/O chips do well to turn out 9600 baud while in
Windows, especially Reflection.  Very noticeable on 286 machines.
 
The "new" math version of this is that the "new" Reflection/Mac (4.21) is
build around the Apple Serial Tool connection.  Reflection versions prior
to that had to 'SET DISABLE-COMM-TOOLBOX YES' and set Xon/Xoff.  The new
one (4.21) requires that you enable the toolbox AND further set handshake
to "None" which is counter-intuitive.  If you enable Xon/Xoff in R1/Mac
4.21 you'll have headaches out the wazoo.  Specifically, it won't respond
to a terminal status request, resulting in a keyboard lock.
 
There's also a "keyboard lock" problem in general with MPE/iX 5.0 Pull.
VTURNON/VTURNOFF don't behave as they used to.  I had an application that
had an "input" VPLUS screen, then did VTURNOFF, painted report to screen,
and reloaded F-keys (next page/prev page/print/etc).  Now it leaves the
keyboard locked and the VTURNON doesn't reset function keys (vfsetkeylabels)
 
[\] Jeff