I am very
worried that people would rather use a microcontroller than change
a couple of passives. Can't anyone read a schematic and think????
The exact same argument could be made for somebody using an NE555 instead of discrete
transistors to blink an
LED, or discrete transistors instead of vacuum tubes to blink a neon glow lamp. For that
matter, I might call
Err, to blink a neon glow lamp you use _one_ resistor and _one_ capacitor and make use of
the difference between
striking and maintaining voltages.
But that is not the point. The original design for this M452 baud rate clock is an RC
oscillator. One that can
run at any reasonable frequency. When restoring a machine you should keep as much of the
original design
as possible. If you want to do a reversable change you should still change as little as
possible. Since it
appears you can change the buad rate just by changing a couple of passive components
that's what
IMHO you should do.
-tony