Here is an ebay link to a pretty good (IMHO) guide to the data I/O programmers.
http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5574933636&toolid=10001&campid=5336728181&customid=&mpre=http%3A%2F%2Fwww%2Eebay%2Ecom%2Fgds%2FData-I-O-Device-Programmers-A-Condensed-Reference-%2F10000000001698682%2Fg%2Ehtml Sent from my iPhone On Jun 24, 2016, at 10:22 PM, Fritz Mueller <fri...@fritzm.org<mailto:fri...@fritzm.org>> wrote: Thanks much for all the info and help, folks! I'll see about tracking one of the programmers mentioned. I'd like to have one around in case I run into more parts like these. Was helping a friend with an old arcade game last weekend, and it had a few parts like these as well. --FritzM.