Tugrul wrote: > > Does Proteus support coding? > Yes it does. I use the CCS 'c' compiler and it is able to single step through the code. You are also able to set breakpoints etc. It even has a run time dissasembler which allows you to single step the 'c' code in ASM as well. For this your compiler needs to output a COFF file. You can download a demo from their website (15M), or their brochure (750k) at; http://www.labcenter.co.uk Brian. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.