Thanks for the couple of suggestions. I should have been more clear on my original question. I'm just trying to read the PROM (it is a PROM isn't it?) to verify against the MAME set that it's not corrupted. I'm using an EETools Top Max which is a pretty good device (although it can't do the 2708's). In the past, Al Kossow's original PROM cross reference (now hosted on a few sites, but I usually pull it from mikesarcade.com) has always been able to stear me to a substitue PROM to be able to read it, but this one isn't listed. Joe -----Original Message----- From: techtoolslist-bounces@flippers.com [mailto:techtoolslist-bounces@flippers.com]On Behalf Of joemagiera Sent: Saturday, February 18, 2006 10:34 PM To: techtoolslist@flippers.com Subject: [Techtoolslist] Cross to read a PROM? I checked the usual PROM cross reference sites with no luck. Can anyone suggest a suitable cross refernces to read a Signetics N82S153N PROM? Thanks, Joe _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist