> Is it true that the RAM and EPROM are on the same die which is exposed to > the window? Yes. Its a single chip. If you look into the /JW, the largest uniform square area is likely the EPROM, one of the other largish squares is the RAM. -Barry. ------------ Barry King NRG Systems "Measuring the Wind's Energy" http://www.nrgsystems.com Check out the accumulated (PIC) wisdom of the ages at: PIC/PICList FAQ: http://www.piclist.com/faq -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu