Every now and then Atmel (don't ask) get it into their heads to do something silly, and this month's free bonus fiasco from them is their new
improved marking on the AtMega128 chips. Have a look at this picture, and then tell me which way round the chip's supposed to go...
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Is that bloody great white spot the index marker, or is it the much less visible dark indentation at the top-left?
Yes, you guessed it, it's the one at the top-left.