Anytime I need to replace a ROM on those first generation Williams sound boards.....I use a 2716. The jumpers at the bottom go (from right-to-left)..
J11/J12/J14/J13/J16/J15/J17/J18
When using a 2716, jumpers 12, 13, 15, and 17 need to be installed. Also, make sure pins 39 and 40 of IC3 are jumpered/connected (6821 PIA). You should also do the 10K resistor mod and the 4.7K resistor mod (if not already do)....outlined on page 22, here...
http://arcarc.xmission.com/Pinball/...nd Schematics/Flash Manual and Schematics.pdf
Edward