OK, this is a real long shot, but perhaps someone here has a copy of the Exidy/ChiCoin service booklet (#8) put out by Kush N' Stuff and hasn't sent it off the City of Berwyn...man I hate old TTL schematics as drawn by Exidy/ChiCoin! http://www.cityofberwyn.com/bronzeage/ Their schematics have small groups of ICs with labels like "5BDGC" on inputs and outputs and you nave to find the other end of it... Currently I'm servicing a Chi-Coin Demolition Derby and wish I had more info on the nomenclature used. John :-#(# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out" _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/