Are you using an external oscillator? Keep in mind the f877 doesn't have a built in oscillator. Quoting "mr. man" : > Hi, > I bought Myke Predko's "Programming and Customizing > PIC Micro Microcontrollers." I'm using the El Cheapo > board, software and MPLAB 6.1. I tried the "ledon" > experiment and it worked with a 16F84A, then I tried a > 16F877, it programmed and verified OK but when I put > it in the circuit the LED turned on and stayed on > regardless or input. I tried the home built version of > el cheapo and got the same results. I saw some posts > about Low Voltage Programming mode (LVP) and tried a > 10K from RB3 to ground but got the same results. > Has anyone gotten the el cheapo to work with the > 16F877? > > Thank you, > Bill > > > __________________________________________________ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > http://mailplus.yahoo.com > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > ---------------------------------------- This mail sent through www.mywaterloo.ca -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body