BCC:    GAVIN:  1702 !

> Actually, a blank EPROM in the socket should work just as well to debug
> as the diode-array solution, right? It should read FF in all locations.

Not if it's a 1702 :-)
(Make that VBG)
All 0's when blank.

Solarwind, and anyone within 10years of his age, should read this data shee=
t :-)
1702 data sheet

                http://www.jmargolin.com/patents/1702a.pdf

Excellent video
Interest level will vary [tm]

             http://www.youtube.com/watch?v=3DuKk7fVIZPE4

                  Russell

Also

http://www.jmargolin.com/patents/eprom.htm

http://www.decodesystems.com/old-ics.html

http://www.edaboard.co.uk/2708-and-1702-eprom-reader-programmer-t400177.htm=
l
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