Mister Happy, If you enabled, or more precisely, didn't disable, code protect, you've got a ruined PIC. Also, check that you have selected the correct oscillator type. But, if you've set it up correctly, and checked that code protect wasn't implemented, it should work. Good Luck, Regards, Jim -----Original Message----- From: Mister Happy To: PICLIST@MITVMA.MIT.EDU Date: Saturday, September 25, 1999 4:39 PM Subject: erasing JW pics and reprogramming >I just programmed a JW pic for the first time yesterday, it work fine. I >erased the pic, the software said it was blank. I reprogrammed it with the >exact same code, it said it programmed it but it didn't work. The code was >not executing properly, whats up with this. CAn I not program the same code >in twice in a row? I actually had the code assembled for the pic12c508 and >the the device is a 12c508A, but it worked fine, the first time. Please >help, did i I screw something up and ruin the pic? > >______________________________________________________ >Get Your Private, Free Email at http://www.hotmail.com