On Sat, 2004-07-31 at 02:29, Wouter van Ooijen wrote: > That's not a protocol problem, it indicates that the writing of the very > first address failed. The programmer did recognise the traget chip, so > it is basically working. > > Did you by any chance omit a decoupling cap? 100nF + 10u or higher is > realy required, both at the target and at the PIC in the Wisp628. I hadn't put any decoupling caps on the target, but the Wisp628 is exactly like your schematic and notes. I then put .1uF across the target's +5 and GND, and 10uF on both breadboard rails, still the same thing. I also tried 220pF from the target's ICSP clock to ground. Is there any way to slow down the programming from within xwisp? I had problems with my JDM programmers that was fixed by increasing the delays from within the programming software. Thanks, Sean -- Sean A. Walberg http://www.ertw.com -- 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