I just tested my home made nopp. With all the excitement I loaded the Demof84.hex(led chaser), it some how returned an error when I tried to verify the program. The message is: failed at 0000. expected 3000, found 3fff. I tested the programmer before I put in the chip16F84A-20I/P and it was fine. can any one tell me what's going on ? Your help is greatly appreciated! YG