The EPROMs came from Pana in Kent, WA if I can recall correctly. I doubt they're in business, so maybe someone else will see this and be able to either find a 624-4 (or whatever variant it was), or produce the proper EPROM.

624's weren't in production long in the U.S.

Carl

P.S. If you're a gambler, $71.95 gets you a TA-624 for parts. It's listed as a Circle 4. Just Ebay search for TA-624 and it will show up.



Last edited by Carl Navarro; 05/24/19 06:48 PM. Reason: added PS