27C128 to 2564 Adapter

[Hoffy84]

Hi guys,

   Arcade game board I’m working on. Without getting into so much detail, there is a mod you can do, to make it switchable between Punch-Out and Super Punch-Out (The sequel), by bank switching various eeproms.
   My particular board version uses a few 2564 eeproms, and I am trying to adapt 27C128’s to them in this section of the schematic.

   On the 2564s:
     >CS1 & CS2 are both grounded, as in the schematic
     >PD/PGM in the schematic appears to be used as chip select, so  seems to be where I want to wire OE (G) to the 27C128 (Pin 22 to Pin 22)
     >I need to use A13 on the 27C128 to bank-switch.
     
   There isn’t really a definitive way to match a 27 to 25 pin for pin, and you have to route it depending on how your board circuitry is laid out. Can you take a look, and see if this will work? I plan on fabbing adapter pcb’s for each eeprom.

- Thanks! Jeff