Phill Harvey-Smith wrote:
Hi all,
I have here a Sandy SuperDisk interface which works fine. The board
however has several (3) missing chips and a missing 9 pin socket, I know
from the manual, that this can be upgraded to a SuperQBoard, by fitting
the missing chips and the 9 pin mouse socket.
What I don't know is what the missing chips should be ? So does anyone
have a schematic, or failing that a good picture of the circuit board so
that I can see what the missing components are.
I once had a full blown SuperMouseBoard from Sandy (it was "updated" [in
fact, changed, not modified] from an SQB). I fear, one of the missing chips
is a programmed GAL chip. Seems to be very difficult to update the board by
yourself.
And you have to have the right EPROM, as there is code for the "mouse"
logic.
Cheers...Ralf
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