Hey, is it a 74 or 74A? I think the 74 can be uv erased. If you have been using the 74 and this chip is a 74a then some config bits are inverted possibly including code protect. Tim ------------------------------------------------------------------ If you can read this, it is the end of the message! My web pages are at http://web.ukonline.co.uk/members/tim.kerby/ My PIC site is at http://web.ukonline.co.uk/members/tim.kerby/pic/ It needs your projects! ------------------------------------------------------------------