MarshallSoft serial communication component PowerBASIC library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4PB) include: Uses the standard Windows API to communicate with any device connected to a serial port. Includes 34 functions plus modem control, ANSI emulation, ASCII/XMODEM/YMODEM protocols, hardware and software flow control (XON/XOFF, RTS/CTS, DTR/DSR). Includes multiple PowerBASIC example programs. State driven Xmodem and Ymodem on multiple ports simultaneously (up to 256 connections). Is port re-entrant. Is fully thread safe. Can send Windows messages on completion of events (incoming character, etc.). Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 32-bit (WSC32.DLL). Supports PB/CC, PB/DLL and PB/WIN. Does not depend on support libraries. Makes calls to Windows API functions only. Can also use with Delphi, Visual C++, C#, VC.NET, Visual Basic, VB.NET, VBA, Visual FoxPro, Visual dBase, Xbase++, and COBOL. Can be used with managed code. Can be ordered with or without source code for the DLL. Free technical support and updates for one year. Programmer's, Reference, Users and Serial Comm Manuals provided. Requires a Windows Visual Basic compiler. Supports Windows 95/98/Me/NT/2000/2003/XP. The evaluation version of WSC4PB is fully functional and can be downloaded from http://www.marshallsoft.com/wsc4pb.htm.