MarshallSoft Delphi serial communication component library (DLL) for serial port communications. Uses the standard Windows API to communicate with any device connected to a serial port. Includes 28 functions plus modem control, ASCII/XMODEM/YMODEM protocols, and multiple example programs. WSC4D features include: Can control any serial device connected to the serial port. Can control multiple ports simultaneously. Is fully thread safe. Supports Windows 95/98/Me/NT/2000/XP Can send Windows messages on completion of events (incoming character, etc.) Includes 16-bit (WSC16.DLL) and 32-bit (WSC32.DLL) versions. Works with all versions of Delphi. Does not depend on support libraries. Makes calls to Windows API functions only. Can also use with C/C++, Visual Basic, PowerBASIC, Visual FoxPro, Visual dBase, Xbase++, and COBOL. Can be ordered with or without source code for the DLL. The evaluation version of WSC4D is fully functional and can be downloaded from http://www.marshallsoft.com/wsc4d.htm.