On Sat, 3 Aug 2002, Spehro Pefhany wrote:

>At 04:23 PM 8/3/02 -0700, you wrote:
>
>No, the 1702 is an ANCIENT (ca. 1970) 3-supply (+/-5V, 12V, not including Vpp,
>48V or something like that) 256 x 8 p-MOS EPROM, not an EEPROM.
>
>Some current universal programmers may be able to work with
>them, but if you can't find one of those, maybe someone has an antique
>one around.

Usually one can wire two sockets and an external supply to make the
ancient EPROMs look like a 2732, which is read/written by most
programmers. An external PSU is required to supply +12 and -5V. I've done
this and it works (for 2708s).

Peter

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