"Alexandre Domingos F. Souza" wrote:
>
>
>
>         Let's suppose I have a PIC in circuit,

For what it's worth, I place a set of 8 IDC male pins on mu PC board.
One pair is gnd
One pair is RB6
One pair is RB7
One pair is MCLR
With my Dontronics programmer, I run a cable from the programming port
on Don's programmer, to the IDC pins on my PC board, and the switch on
Don's programmer puts me in either run mode or program mode.  What
happens is - in program mode the PC board circuitry is isolated from RB6
RB7 MCLR and connected to the programmer.  In run mode, the programmer
is isolated from the same RB6 RB7 MCLR pins, and they are connected to
the PC board circuitry.
Once the PIC is programmed, the cable is removed, and jumpers put across
each pair to put the PIC in run mode permanently (untill jumpers are
removed and programmer cable is installed again)
I find this very useful when I know what the hardware and the board are
going to be, but need to fine tune the program on the PIC.

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