MPU3 RAM board mod.
Late mod 6 MPU3 boards were fitted with a RAM daughter board which took a single
6116 RAM chip rather than two 5114 chips.
The growing problem of sourcing 5114 RAM for MPU3 boards has meant going further
and further a field in order to buy replacement RAM chips. I bought the last lot
from the USA.
Again, a solution from Andrew Finn has meant that a neat little RAM board can be
added to your MPU3 which will take the single 6116 which is readily available for
Very neat and very small, the pictures show the board with a 6116 fitted.
Credit where credit is due, Andy came up with the mod very quickly. I ordered mine
pre-soldered with a socket for the 6116 so they are ready to be installed and used.
The RAM board plugs into the 2 existing 5114 sockets.
This will work in almost all MPU3 boards, the exception being some MOD6 boards which
used slightly different RAM with different pin-outs.