At 8:08 PM +0200 8/13/01, wouter van ooijen & floortje hanneman wrote: > > When I first had trouble and went poking around, I found Microchip's >> note about RB3 and LVP (and then read much of the voluminous >> discussion about it in the PICList archives :-). I assumed that was >> my problem, so I temporarily tied RB3 to Vss on the board though 10K, >> just for programming. It didn't seem to change anything. > >Shouldn't that be Vdd to disable LVP? In the past I programmed some F877's >wothout problems without connecting RB3 to anything, but with F628's (RB4!) >this worked erratic. So always tie the LVP-enable pin low while using HVP. Vss *is* low, isn't it? Or am I missing something obvious? (a definite possibility...) Dave Johnson -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body