I tried to read processor (Hynix GMS97L51), no luck - my Willar programmer does not have this processor on the list, and for any other C51 it says "ID error".
Funny thing - "L" in GMS97L51 means it is low-voltage version, so it is not supposed to work at supply voltage above 3.6V.. and it is on 5V in Dual Axis controller !!
Very strange - but I am not surprised after my experience with my Dual axis controller that came with my LXD-75 (
I wrote about this saga couple of years ago).
Anyway... unless I obtain the hex listing for this paddle (so I can program the new processor), it will have to go into storage to wait there for better times....