Hi Olin Well I left the board powered but it was no accident. I expected that if the -VDD option was not invoked it would try to read the target without supplying power. I suppose I could break down and "READ" the instructions someday. The target seemed to survive it just fine but when I supply power with target board powered using the ICD2 it damages the circuitry of the RF board. So is it safe to say the Pro_prog will not operate with out trying to supply power? Phillip Things should be as simple as possible but no simpler Phillip Coiner CTO, GPS Source, Inc. Your source for quality GNSS Networking Solutions and Design Services, Now! -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Olin Lathrop Sent: Monday, April 09, 2007 2:43 PM To: Microcontroller discussion list - Public. Subject: Re: [PIC] Pro_programer/head in dark place troubles Phillip Coiner wrote: > Here is a measurement when I type pic_prog at the command prompt. > The programmer is taking the VDD line to 5V even though I'm not > using the > -VDD option > > CH1 = VPP > CH2 = PGD > CH3 = PGC > CH4 = VDD > > Is this right? Yes the programmer will power the target at 5V while trying to identify it. The strange thing is that Vdd never gets down to 0. Maybe you accidentally left the board powered on? Hopefully nothing broke if that was the case. Please try the things I asked you. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist