Thanks, but I think I have fried the chips somehow in a particular test
circuit where I connected two of them together to try to get the
Parallel Slave Port system going, one programmed to play master and the
other programmed to play slave, but it didn't work as well as I'd like.

I have found a third 'F877 that programs and verifies just fine.

Jeff

----- Original Message -----
From: M. Adam Davis <adampic@UBASICS.COM>


> Check the power supply for the picstart.  It may be failing (check the
> archives for similar messages).
>
> The archives will give you an idea of how to repair the PS, it
generally
> means failed caps.  You might also make sure you're using the latest
> firmware and software.  Since it was working before you might have
> limited success, but it's worth a shot.
>
> -Adam
>
> Jeff DeMaagd wrote:
>
> >I am starting to get programming fails on PIC16F877s when it hasn't
> >happened before.
> >
> >I have tested it on F872s (28 pin) on read and write.  The PICSTART
> >seems to be able to read the devices just fine but it doesn't seem to
> >program an F877 properly, it gets a failure notice in MPLAB.

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