Bad EEPROM on 11/84

I could use the collective wisdom of the list. I have an 11/84 (M8190) with what appears to be a bad configuration EEPROM. [The symptoms are that at boot the system attempts to boot and immediately drops into ODT rather than testing memory and the setup menu. Replacing the EEPROM with a known good one from another board cures the problem.] I'm trying to learn more about the EEPROM but haven't had a lot of luck yet. It appears to be a Xicor X2816AP, 24-pin, DIP. This seems to be a 2k x 8bit EEPROM, but I haven't found out much else yet. I would like to find a replacement for the EEPROM. Two questions: 1) Any recommended sources for such parts out there? 2) Any suggestions on how to initialize it? Perhaps just leave it zeroed? Or copy a known good one? Thanks, John