thanks for fast reply mackrackit sorry but i dont explain well, when the pic read the file is read from vdip2 module serialy and then pic send in parallel to old machines o whatever output in parallel flashion though port, right now and playing with vdip module and rs232 hex comm tool and first y think i can use led 1 & 2 for detect an usb flash memory then use dir command and save all file names in pic ram memory scroll these names in lcd module with up and down switch, when user select a file to read with select switch send that name file to vdip module for read with OPR command and read that file in one byte in a time with RDF command send this byte in parallel fashion with one complete port from pic plus strobe & busy signal for compatibility with diff. old machinery and get back and read next data byte until encounter end of file.