Well, I tried grounding Pin 36 (RB3/PGM), and putting _LVP_OFF in the config word, and it didn't work. I'm still a bit suspicious of the crystal, are there any tests that I can run on it without disrupting its operation? The crystal *does* work with the 16F84. Also, I don't have an oscilloscope. Oh, by the way- why does the '877 have two power and two ground pins? Does it really draw that much current to make them necessary? Thanks, -Mike Previously: ----- Original Message ----- From: "Heinz Czychun" To: Sent: Friday, July 20, 2001 1:37 AM Subject: Re: [PIC]: Dead 16F876 > >> >Hi all, > >> > For the seemingly dead 'F87x chips. Make sure the LVP pin is > >> > held low, and not floating. This bit me when I tried one of these > >> > newer chips. Mine came programmed for LVP mode and were very erratic, > >> >until I grounded this pin. > >> > > >> >Heinz > > > >RB3 - pin 36 on the dip part (actually labelled 'PGM' in the data sheet > > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu