Bernd Bachmann says...

 > that bug you discovered on the Plus 4 kernel rom sounds
 > quite interesting. I still use the Plus 4 since many
 > many years (actually it was my very  first 8bit computer
 > I owned).

 > Maybe you are interested in posting this bug on the
 > Plus4 website we have  at: https://plus4world.powweb.com
 > /

 > There is a forum on this site were we could discuss this
 > bug. Feel free to join us there! :-)

Thanks Bernd, I just posted there.  Hope it will be useful
to someone.

--- SoupGate-Win32 v1.05