Ahh, add this to the #FUSES.... NOLVP. There is a pin for programming the PIC on +5V and the fuse tells the PIC = to use it or use it as an IO pin. If it floats and the LVP fuse is set, it resets the PIC after what it thinks was a program attempt. Brian. > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Tugrul G=DC=C7L=DC > Sent: 11 December 2003 06:35 > To: PICLIST@MITVMA.MIT.EDU > Subject: [PIC:] MCLR Problems > > > Hi, > > I'm having some problesm with 18F458 ,First I thought it is > because of PIC C > compiler's float library but then realised that it's not a > software problem > .}t is because of unstable behaviour of MCLR pin. > Altough I pulled up that pin sometimes it resets. > Has anyone saw this touble before? > > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body