I put it on the proto board, then powered it up and started poking the pins while watching on a scope to see what happened. After doing a double take of data flying out, I checked it with the die shot to make sure this is probably what was happening and sure enough the 16 ROM lines go to those 16 pins. So that was that.

I still haven't captured the data yet, I have to make a rig to do it and haven't done that yet.