Forget enquiry about addressing - obviously (??) you send as many address bits as necessary. Reading too many data sheets. Some smaller EEPROMs use block selection and the larger ones use direct access by 2 x 8-bit addressing. Should have just stuck to the sheet for the memory I'm going to use -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body