By the way I have useds an Acorn 6809 system like the
one in your
Somewhere I ahve a Acron 'System' rack with the 6809 CPU board (I have
another one with the 6502 CPU,. I know where both are, but nt owhich is
which). Mine has the 80 col VDU board, so the firmware ROM is not the one
i nthe docs. Oh well.
-tony