I find myself in the awkward position of not being able to burn 2716 eproms,
but I can burn 2764's.
On the REV D, there are points on the board near U12 that allow you to connect to A11 and A12.
here is what I have tried with no success...
![Sad :(](./images/smilies/icon_e_sad.gif)
U12 socket Pin 21 - goes to the A11 point on the board
U12 socket Pin 18 - is grounded (not changed)
U12 socket Pin 20 - is connected the way it usually is to pin 15 of the LS138 (inverter is not used on this new board I dont think)
2764 pin 1 to VCC
2764 pin 2 to the A12 point on the board.
and this does not seem to work... anyone try this? have I missed something fundamentally obvious?