Thomas,

I have this problem on my project board (breadboard).  I use an IC
socket on the board and sometimes when I am inserting the 16C84
after pgming it do not sit fully in the socket causing one or
more of the ports not to work. Try pushing the IC into the socket as
far as it will go.

> I'm new at making programs for the PIC* processors. And now i have some
>trouble, I'm using a 16c84. I have made a very simple program, that just
>flashes with two led's, sometimes it works (and both led's flash), but
>mostly it's only one of them flashes, or nothing at all happens! Is there
>any logical explanation of this behaviour?.....<snip>
John Adams ------- http://pobox.com/~electronics ---------
electronics@pobox.com
Check out the H.W.S Internet Guide to Electronics book as well. Links on my
site