Matthew Miller wrote:
> Last week was the first time I had used a 12F629 and I wired the chip
> wrong (why is ground on pin 8?). This didn't kill the chip, but the
> only way to program it now is to first erase the chip and _then_
> program it.

Most programmers do an implicit erase as part of the programming operation.
Both of mine certainly do this.  What programmer are you using?

> If I don't erase the chip I get verification errors as well. But, an
> erase before the programming causes the verification to succed. I've no
> idea why.

So *something* changed in the chip when it was hooked up backwards if you
didn't see this symptom before.  That means it did get damages.  I would
toss that chip immediately because there is no way to know what other parts
are damaged in subtle ways too.  Anything this chip does is now suspect,
making it worse than useless.


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