WTD: 28C16 EEPROM in PLCC package

Hi guys, Seems the EEPROM which stores the MAC address in my HP 16500B logic analyser has developed amnesia. That is to say, it forgets everything a few days after being programmed, and as of today it won't even program correctly. Does anyone have a spare PLCC-packaged 28C16 EEPROM or two knocking about? Ideally I'd like another of the original part, a Samsung KM28C16J-20, which is specced for 200ns. A Catalyst/ONsemi CAT28C16 or any of the many variants should also suffice... My local supplier lists these as "special order only" -- with a ?16+VAT charge to do so, a monstrous minimum order (something like 100 units) and a three week factory lead time. I need maybe three of these at most... Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/