In message <000001c322fc$2e0469d0$0b00a8c0@PAARD> Wouter van Ooijen wrote: > But I would simply grind away the housing and look at the die, which > probably states "Microchip 12F628 revision XX", and maybe even the URL > of the datasheet? 1) If you ground off the top of the housing, you're not going to be able to get the die out intact, i.e. without damaging it. 2) Most reverse-engineering teams use fuming nitric acid. Does anyone want to pull a 12C508/JW out and put it under a microscope? I'm not going to sacrifice any of mine... Alternatively if someone here has access to a chemistry lab, perhaps they could get a dead 12C508 and use some nitric acid to remove the cover plastic, then put the chip under a microscope? I'd love to see if any of the Microchip IC design team had hidden anything on the chips (see www.micro.magnet.fsu.edu/creatures/ ). Later. -- Phil. philpem@dsl.pipex.com http://www.philpem.dsl.pipex.com/ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body