> There are NO interrupt vectors to care for. There is OSCCAL so the > first instruction is MOVLW OSCCAL but the rest is as you described. I wasn't talking only about the 8-pin chips, but anything OTP. This is all rather silly though. Switch to the 12F628, or if it's a high volume product a few JW parts will be cheap and certainly better than wasting time farting around reusing OTP parts. Sometimes hobbyists and professionals don't seem to understand each other's viewpoints. Here I have all these $<1.00 PICs, and you want me to spend REAL MONEY on JW parts? BillW -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body