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With early revisions of that chip there was a way to read it out even when the security was set. I'm not sure if it is still possible with newer revisions. (by supplying it with wrong voltage variations, it was possible to reset the security bit without erasing the other content)
I'm sure google will present you with more info :-)
update: quick search on google hxxp://www.cl.cam.ac.uk/~sps32/
Last edited by SiNTAX; 05-18-2004 at 23:26.
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