Added TAG: can I ask you, since english is not my native thongue: Are you really blind or is just a form of expresion. If you are, how do you manege to assembly circuit in the breadboard, protoboard or the way that you call it.? Best regards Oh, by the way. If I where you, I'll use the F84 since as you say you can then upgrade to the 628, and if you use the C64, you will be able to upgrade to the F877 with minor soft changes. Bye Mauricio Jancic Janso Desarrollos Microchip Consultant (54) - 11 - 4542 - 3519 -- Outgoing mail is certified Virus Free. Checked by AVG Anti-Virus (http://www.grisoft.com). Version: 7.0.197 / Virus Database: 260.2.9 - Release Date: 06/11/2003 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.