PIC16f877A first 8 bytes destroyed after closing PicKit2 programmer app....


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  1. #1
    Join Date
    Feb 2010
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    30

    Default PIC16f877A first 8 bytes destroyed after closing PicKit2 programmer app....

    Hello to the forum,

    Using PicKit2 i write/verify a hex file on 16F877A , all ok.

    I even load another file and back read the 877A and all still ok.

    BUT then i close the pickit application,
    when i re-open Pickit application and read the 877A the first 8 bytes are FF , the rest bytes are proper.

    My program has nothing to do with on-the-fly code-programming to overwrite the first 8 program memory bytes ...

    The program is (now only a simple port-toggle , problem is still happening ...)


    OPTION_REG.7 = 0 ; ENABLE PORTB PULLUPS

    LOOP:
    portb.0 = not portb.0
    GOTO LOOP
    Last edited by LakisFM1; - 8th February 2010 at 23:11.

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