> I have a pullup 10k on 5v. A normal NO pushbutton that goes to gnd
> a 470 resistor that feeds the pin.
>
> Can I go directly on the pin with my ICD3 or what ?
>   
 >I tryed but I got this.

>CD3Err0040: The target device is not ready for debugging. Please check 
>your configuration bit settings and program the device before proceeding.


IIRC the ICD2 doesn't like pull ups because they interact with the pull downs in the ICD2 creating an out of range voltage. I dunno if this is also the case with the ICD3 but I would suggest trying a pull down and a button to VDD.


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