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Thanks for your help Ben,

I'll try a new supply...

Regards

JC

HI Ben,

Sorry to keep coming back with more info. I am trying to use ASM-IDE version 1.0 . Should I be using a later version, or does it not matter?

If so, do you have a later version available?

Regards

JC

Ben, have also noticed that my unregulated 12v DC supply is giving me around 17 volts onto the development board. I think that MCLR to Vss is somewhere around 14v max, do you think the 17 volts could be frying the chips ? (however, the 16f84A is still OK). Thanks in advance for your help.... Regards...

Dear ben, Thanks for your reply. I have since tried 2 new 16f877As and a new 16f873A, all with the config word of 3F3B, and I am still getting the code protection error on all of these. However, I can still program my 16f84A no problem. Is there anything else I can try, or do you think there is a pr...

Dear Guys, I am able to program a 16f84A no problem, but when trying to program a 16f877A i get the following message; "The program has NOT been sent correctly (Note: if the PIC is code-protected this message will be displayed even if the program has been sent correctly)" The Config word I...