Hi, I've just received a 16F628 today, and since I've read much about the incompatibility between the 628 and the WARP-13, I tried and I'm glad it worked. I had to download the latest version of the warp software (BTW, I found a new page for Newfound at http://www.newfoundelectronics.com/, dont know I did get there, but the version of the warp13 is not the same as the one at http://users.pipeline.com.au/newfound/, ie I got the warp13 v1.05), tied pin10 to ground, played with the config options (I had only used 16f84 till now), and it worked. The only thing annoying is to set pin10 to gnd. I use Win98 + Warp 1.05 beta and the programmer is a WARP-13a. Stephan -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.