Andy, this is a question that deals with the PIC16C73A.(Having trouble getting e-mail to u. This is the only way I can reach you at this time..) I recall that you commented on the problem of UV erasing the PIC16C73A chips. I am having major problems with erasing this dog of a chip. After 2 hrs of UV exposure, all 10 of the chips will not erase. Any suggestions. ? Has Microchip ever acknowledged that there are problems erasinh their chips. ? I kinda suspect there are others like me wishing they had just stuck with anything other than the EPROM cerdip package. Thx Andy Evan Cranna