I am looking for information on ancient RAM chips, specifically 1101, 1103, 2101 and 2102 types, but later chips also required. Datasheets would be helpful, but I am really after information on the geometries used. I or friends can do some of those - but if anyone has it more to hand try them 1st5. 2102 yes. Others maybe. 1702 quite probably 2708 2716. Maybe 5101? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .