> > 4) Signal line ringing issues due to improper line termination? > > Perhaps 270 ohm series resistors instead of 2000 ohm resistors? > > I don't want to go much below 2Kohm for other reasons, but > you're getting > close. I recall that earlier versions of Wisp628 used 470 ohm series sesistors, I now use 47 ohm. But Olin, did you realy say you are using the programmer-PIC and the programmed-PIC at different Vcc's with only a series resistor to prevent touble? Naughty naughty you! Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body