If it
is indeed an XT compatible keyboard then from memory of writing diags programs
when I repaired pc's for a living the keyboard responds
with HEX AA you can force it again by writing HEX 55 to it (or
the other way around - it's been a few years now).
Chris
I didn't defeat the RESET code, all I did
was plug the keyboard in just after pressing the EDIT key. Then the
screen came up. It appears that the keyboard must send out a code to indicate
it is RESET and the 9100 accepts this. The keyboard is sending out serial
data, the question is, exactly WHAT serial code it