>  I'm building
> a gang programmer that will program up to 16 pics for an industrial
> application.  So, I've got to reinvent this wheel.

One customer uses a bunch (IIRC 25) Wisp628's connected to a PC with two
16-port serial cards to do gang programming. He uses the Python/XWisp PC
software and did not notice a significant slowdown compared to
programming one chip. With the Rob/Jan-Erik version it will probably
scale even higher.

Note: even if you don't want to use a Wisp628 you might check the
firmware, it is available from my site. Note2: Olin tried to create a
compareable programmer but got some problems that might have been caused
by cross-coupling and/or reflections (a PC serial port contains some
serious slew rate limiting!). I never had such problems, which might be
due to the series resistors in all lines (except ground and +5V) from
programmer to PIC.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

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