Hi Bill I'm using 16F676 and I failure to verify if I let the ICD2 choose the memory locations. If I set it to manual and choose the full program range it works fine. I'm not sure what is going on but apparently the ICD2 is programming less memory than it is checking or that needs to be programmed. Phillip Things should be as simple as possible but no simpler Phillip Coiner CTO, GPS Source, Inc. Your source for quality GNSS Networking Solutions and Design Services, Now! -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of William Chops Westfield Sent: Saturday, May 27, 2006 2:33 AM To: Microcontroller discussion list - Public. Subject: [PIC] pickit 1 failure modes Is there a known failure mode for the pickit one where a 12F675 will fail to verify, even though it seems to work? This has been happening recently and I shrugged it off, but the resulting PICs have seemed to become "flakey" over time (or stop working entirely), and I'm wondering whether they were properly programmed in the first place. (unfortunately, the PICs are in an app where there are other reasons they might fail as well...) BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist