I was never able to find one of these 8080 based test computers, but did win on Ebay a suitcase 8080 test computer made by INTEGRATED COMPUTER SYSTEMS. It looks like it is a 'clone' of the NEC as it has almost exactly the same parts, same memory size, same RAM size, same keyboard, displays, tape in/out, etc. It came with a learning audio tape (no idea what it is yet) but no manuals. It does interface to a S100 buss and it also has a built-in extra board for experiments, including a cute motor with a chopper disc (infra-red). So I am eventually going to finish testing it (mine had a cracked -5 regulator solder pin - easily fixed) and then see if it helps my apprentices learn how to use the 9010A WITHOUT my having to help them. The process in the Fluke 9000 Series Micro-System Troubleshooter Introductory Training manual is self directed after all... So keep an eye out for these suitcases - they might be handy for your shop! Also if anyone has paper on this I'd like a copy either scanned or photocopy. Thanks! John :-#)# How to subscribe or unsubscribe from TTL To do either you send email to "MajorDomo@flippers.com" and in the body you state either "Subscribe techtoolslist" or "Unsubscribe techtoolslist", note that the Subject is "" (Blank)... FTP site is: ftp://ftp.flippers.com/TTL/