hello, it's most probably that your programmer is incompatible with your software. try this site their icprog freeware is great and supports a variety of programmers http://www.ic-prog.com/index1.htm schematics of various programmers are listed on this site too. I'd recently made a JDM programmer, and it works great for 12c50x and 16f84s. regards ----- Original Message ----- From: Erik Werner To: Sent: Sunday, August 26, 2001 8:42 PM Subject: [PIC]: 16F84 Newbie Question Greetings, I'm new to this list, so please excuse this simple question, however: I built the simple serial programmer. You know the one, a few resisters, a few diodes... When I use wither PIX (dos) or PicProg (windows), I can read, verify and erase the chip. When I try to program, I get the following error... Failed to program address 0000 (windows) Blow program error at 0000h PIC=0000 0103 wanted. (dos) On the programmer, between pins 4 and 5 I have 14v, between 14 and 5 I have 1v. Could this be because the program starts with ORG 0x000? I don't know what I'm doing wrong. Thanks Erik -- 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 -- 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