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Jan Panteltje

On a sunny day (Thu, 5 Jun 2008 08:22:12 -0700 (PDT)) it happened
wrote in
:

The 2708 requires two additional supply voltages, +12 and -5 in
addition to the +5 required by 2716 onwards. That's probably why most
programmers don't support it.

Should not be hard to make one though - I made a 2716 programmer in
high school, and you could probably do a 2708 if you got the extra
voltages. I used an 8255 I/O chip wired into an expansion memory
socket on my Z80 computer;

Hey, I used 2 Z80 PIOs ;-)