OK, tracing the pinout from the SIL connector for the PIC KIT 3 to the ICD
chip on the header, I found the Vpp pin was not making it through. So, I
ordered a new AC164110 RJ-11 to ICSP adapter which includes the PCB and a
short RJ cable. Swapping stuff around, the problem turned out to be the RJ
cable.

Sometimes I spend more time debugging my tools than I spend debugging my
project!

Anyway, I'll get back to the project tomorrow!

Harold



> Harold,
>
> I remember of an erratum for devices of this era that says that RB4 must
> be
> kept low or the programming and debugging fails.
>
> I already faced that problem.
>
> Probably it doesn't apply to your device.
>
> Cheers,
> Isaac
>
> Em seg, 19 de ago de 2019 18:55, Harold Hallikainen <
> harold@mai.hallikainen.org> escreveu:
>
>> I'm working on an update for some old code for a PIC16F506. I have an
>> AC162070 header connected to a PIC Kit 3 through a Microchip SIP to RJ
>> connector board and an RJ cable. To ensure my target is not messing it
>> up,
>> I've told the PIC Kit 3 to supply power to the host and do not have the
>> header board plugged into the header. I can see 5V on pin 18 of the ICD
>> device. It SEEMS like I should be able to just program the device like
>> this. But, I'm getting the following error when I try to program it:
>>
>> Programming...
>> The following memory regions failed to program correctly:
>> Program Memory
>> Address: 00000000 Expected Value: 000004a3 Received Value: 00000000
>> Programming failed
>>
>> At debugger start, I also get this:
>>
>> PICkit 3 Connected.
>> The target has invalid calibration data (0).
>>
>> Ideas?
>>
>> THANKS!
>>
>> Harold
>>
>>
>>
>> --
>> FCC Rules Updated Daily at http://www.hallikainen.com
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>> --
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>>
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>


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