> i am new to the list and to C programming language. > In my test about the Optama C-compiler DEMO i came across a couple of bytes > within the OPSXPICDEM.EXE looking like: > > ff 52 14 3d c8 00 00 00 or in english: > > call [edx+14] ; ? > cmp eax,000000c8 ; 200 ?? > jle 004a753d ; !? Something is very confused here. The disassembled instructions you show are not for a PIC. They are 80386 (or higher) instructions. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.