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Melabs Programmer U2/USB...why it doesn't program my chip??

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  • Melabs Programmer U2/USB...why it doesn't program my chip??

    Hello ereryone! I'm new to the forum and microPIC programming too...
    First of all sorry for my bad english
    I need your help about the programmer indicated in the title above.
    Here are some assumptions that I believe are necessary to resolve my problem:
    - PicBasic PRO v2.60C
    - MicroCODE Studio v4.0.0.0
    - Assembler used: Mpasmwin 520
    - Melabs U2 Programmer USB - v4.52 beta

    All above listed running on Windows 8.1 PRO @ 64 bit.

    I tried many times to program the PIC mod.16F84A by inserting it -with care- in "8-40 pin ZIF programming adaptor" corresponding the PIN 1 of the chip with the "PIN 1: 8-20" of the adaptor... I'd like to write on the chip my first program blink.HEX (only one LED)... so I select:
    - Oscillator: XT
    - Watchdog Timer: Disabled
    - Power-up Timer: Disabled
    - Code Protect: Off

    than I select the HEX file and press "Program" button: at this point I see that the green light of the LED of the U2 programmer becomes RED until the operation ends... the LED becomes green again, everything seems to be fine but..... when I go to read the "EEPROM Data" by pressing the "Read" button I always see that what is written on my PIC are only "ff ff ff ff..." and infact the PIC does not blink my LED when I put it in the circuit...

    I think there are some settings to do in the programmer like serial number, target etc, but frankly I don't know how ... can you help me???

    Thank you in advance!!!