Section 3.2 States weak pull-up on every pin except GP3. Section 3.3.4 defines the use of GP3 as either Master Clear or General purpose input. Register 9-1 (page 52) defines how to setup the Configuration Bits for GP3 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist