MarshallSoft Delphi serial communication component library for serial port communications. Controls multiple ports simultaneously, is fully thread safe, includes 16-bit and 32-bit DLL's, works with all versions of Delphi. Does not depend on support libraries. Makes calls to Windows API functions only. Can be used with any language that can call the Windows API. Includes 32 functions plus modem control, and ASCII/XMODEM/YMODEM protocols.