Sorry Dave.

I typed it wrong. The PIC board(target board) is running with a 12 Volt
supply. The Pic is at 5Volt.

> So the PIC is running at 12V?  Won't that fry it?  And, if there is a
> part of the circuit at 5V, why can't you connect the ICD2 to it?

Out of experience I know that a PIC can handle 12V for a short period of
time...dont know what the reliability of that Pic will be after that.
***I think the magic smoke leaks out at about 14V ;)***

I have received the ICD2 and read the manual.
The Vdd and Vss pins MUST be connected for the ICD2 to function. It 'adaps'
the to the power of the Targer board.

I have connected the ICD2 to the PC via a RS232 cable and apply a 9VDC power
supply to the ICD2. (It also works fine with the USB cable alone - Powered
by the USB)

My targer board is powered by its own power supply

It works fine.

Thanks to all

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