unsigned _bios_printer(unsigned cmd,unsigned port,unsigned data) - prototype in bios.h - cmd = _PRINTER_WRITE print character (INT 17,0) = _PRINTER_INIT initialize printer port (INT 17,1) = _PRINTER_STATUS read port status (INT 17,2) - port = printer port; 0=LPT1, 1=LPT2 - data = value to write - returns status of printer (INT 17, AX reg, AH contains status) - Turbo C uses biosprint() - see INT 17