<img src="images/smiles/icon_mrgreen.gif" alt="Mr. Green" title="Mr. Green" />
There are different problems with each, in my experience.
With JTAG/SPI/I2C, finding the test points is the hardest part. Minor headache is interpreting the resulting data dumps.
With chip-off the concern are untangling the "translation" layers and sometimes encryption of the dump, minor problem is getting the pin-out for unknown chips.
But, no disagreement with you or Bob.By the way, I almost made it to your class in DE, Bob, but I think my boss just nixed it<img src="images/smiles/icon_sad.gif" alt="Sad" title="Sad" />
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