I just want to confirm this before I zap any chips. I installed an Aries 40-Pin Universal ZIF socket that accepts both the = wide (0.6") and the thin (0.3") ICs. Additional Vcc, Gnd, MCLR, Strobe, = and Select lines were wired to the appropriate pins on the ZIF to = accommodate the various smaller PIC chips.=20 The question is: While programming a particular PIC chip, does it matter = that some of its I/O ports may be inadvertently subjected to the = programming voltages?=20 Leon N3BOB -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics