I guess you mean the m28c64a, I haven't dumped that. I can but I'll wait to see if it's needed. Datasheet says eeprom so I'm guessing it saves settings and scores and a dump isn't needed. I could be wrong.
So, the graphics are so small that it doesn't need a rom for them. You could fit them in the program rom. It's literally an all white clay pigeon and a few pixels for explosion. Again going by memory.