On Wed, Sep 19, 2001 at 11:18:55AM +0200, Peter L. Peres wrote:
> Are you sure it was the original hex file ? The C54 reads scrambled data
> for verification purposes when protected, as opposed to higher PICs which
> read zeros when protected. This is covered in the data sheets. Also some
> high end programmers have buffers where you store one or more images.
> Maybe you read back the image instead of the chip ?

Is it possible that the high-end programmer can descramble the data?
OTOH is the scrambling process lossy? If it is not, it is possible to
recover the original data :-(.
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