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Int Art said:select mplab icd2 in debugger >> select tool
then debugger >> download icd2 operating system
predrage said:Hi gameoso. I think that bootloader named pic16f877_boot.hex is for 877A but I'm not sure. Because you have 877 not 877A you should use BL010101.hex. You will find it in mplab's directory.
gameoso said:ths for answer, but i tried it too and nothing hapens it continue giving me the same errors. I also am using the 4558 for test some USB firmware and works ok, and the 16f877 works well to. Do you think this "new" ICD2 (USB) don´t work anymore withe the NON A 877?
The problem is between the target and the 877. If you can, remove the 877 and check the connections manually(for ex. short connect ra5 with vdd, change the logical levels on the rc4 and rc5, and see what happens on the targets pgd) If you can't remove the 877, then search for short connections and breaks between 877, HC126, HC00 and target.jajistenem said:>>>ICDWarn0020: Invalid target device id (expected=0x86, read=0x0)
R17 or R18 is bad.jajistenem said:>>>Target Vdd = 4.02V (i checked multimeter it is 4.92V)