13V on board for HVP - a must. I would like to see double
that through switching PSU or voltage doubler . You know ,
power for the EEPROM or something.

You see if the comunication between PIC and PC is properly
sorted out , then it would be just few link up wires to the
target 18F452 , or a whole lot to the the EPROM / EEPROM /
AVR / 51 series on the breadboard . The PIC could be used
to facilate transfer and control of many protocols to the
various targets . Even if the 16F628 was used , target the
standard 16F877 to interface its many IO pins to the target
devices . You will have to reprogram the 16F877 that will
then take over.

Costs once debugged - minimial - just power and hookup wire
apart from man hours. As a multi programmer , then $100 is
extremely good value. Do it in code .

The developement system basically needs a base for communication
(USB/serial/PC port/IR even) to the PC , and power supply . The
system could grow in time - USB could be added when cheaper and
easier - even using the 16F877 to communicate to program another
target 16F877 .
Everthing else is a bonus .

Vis Naicker

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