On Sun, Nov 28, 1999 at 03:10:07PM -0600, Jake Szot wrote: > A classmate and I are making a PIC16f877 programmer as a project in one > of our courses and we've run into a problem. The PIC will not let us > read data (properly) or advance the program counter while in program > mode. Here are the steps we go through to program a location: [snip] Hi, I had a similar problem with programming of PIC16F877. It's description may be found at: http://www.infosite.com/~jkeyzer/piclist/1999/Aug/1898.html However in my case the programming of code memory worked correctly, but verification of data EEPROM failed (the PIC returned "0" values independently on what I've programmed). Up to this time I haven't found the solution of this problem, however with this exception the programmer works fine... If you get any answer to your question, which may be useful to solve mine, please Cc it to me... -- TIA Wojciech Zabolotny http://www.ise.pw.edu.pl/~wzab http://www.freedos.org Free DOS for free people!