Hi everyone,
I have a Captain America cab that doesn't properly display the background graphics. I have determined that the chip responsible for decrypting the graphics is damaged (it seems to have corrosion coming from inside the chip). It's a programmable logic chip, a PAL16R8BCN. It's socketed, and when I took it out and ran the game, the BG graphics were completely gone (just a static scramble pattern).

So, my question is, is it possible to know what encryption logic to program onto a new one of these? Since the game runs in MAME, I assume someone has the key.

Thoughts?