At 08:47 AM 16/01/97 GMT+1100, you wrote:

Tony,

Thanks for the suggestion. However, when I use a flying lead and still use
the same contact points I have no problem. It is as though the contact being
made is high resistance and sets up an oscillation so affecting the reset line.

thanks again,



>Perhaps the equipment is at Ground potential and when the switch
>closes, the PIC input does not like to be connected to this ground.
>
>Try an isolated switch.
>
>Tony
>
>
>Just when I thought I knew it all,
>I learned that I didn't.
>
>
Peter Grey
Neosystems
Australia