Date   : Wed, 27 Aug 1997 18:54:09 +0200
From   : "Mark Usher" <marku@...>
Subject: How did they do it ?

Hi,

I have before me a Master 128 MOS+ ROM. The rom contains 8 x 16K images for
the MOS, and is inserted into a "MOS" socket on the mainboard and not the
normal socket.

What I can't quite figure out is how they managed to address 128K on the
28pins.
Can anyone shed some light onto this "Phenomenon", ie which pins they used
for what ?


Mark Usher
marku@...
Programmer / Insoft GesmbH / Austria
and general Beeb enthusiast :-)