Thanks everyone for your input. I started to use MPLAB as Fabio suggested this week. My W_TEMP register : w_temp equ 0x70 So I thought that if it would be in common space for all pages it will be Ok. But seems it is not. Can't figure that out yet, but I will. Thanks again for your help. Mircea Chiriciuc EMCO INVEST -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.