COMM-DRV/VxD High Speed Serial Communication Kernel Driver for Windows 3.x & Windows 95

$299.95

COMM-DRV/VxD was designed with interoperability in mind. It uses the Windows standard DLL calling conventions. As such, COMM-DRV/VxD may be integrated with any Windows tool, application, or language that can call the Windows API (WIN16 or WIN32). COMM-DRV/VxD may be used with Visual C/C++, Borland C/C++, Watcom C/C++, Visual Basic, Access, Excel, Paradox, and a myriad of other tools and applications.

COMM-DRV/VxD is extremely easy to use. The API is simple, concise, and intuitive. Ample examples are provided. COMM-DRV/VxD may be integrated with all other WCSC communication products.

Description

COMM-DRV/VxD Technical Specifications

COMM-DRV/VxD was designed with interoperability in mind. It uses the Windows standard DLL calling conventions. As such, COMM-DRV/VxD may be integrated with any Windows tool, application, or language that can call the Windows API (WIN16 or WIN32). COMM-DRV/VxD may be used with Visual C/C++, Borland C/C++, Watcom C/C++, Visual Basic, Access, Excel, Paradox, and a myriad of other tools and applications.

COMM-DRV/VxD is extremely easy to use. The API is simple, concise, and intuitive. Ample examples are provided. COMM-DRV/VxD may be integrated with all other WCSC communication products.

  • Provides support for RS485/RS422 devices. It can automatically drop the RTS signal when all data has been transmitted for optimum control of the RS485 buses or other devices requiring said protocol.
  • Provides built in support for the nine bit protocol. With one call the first byte is sent with 9 bits while the others are transmitted normally.
  • Supports WIN32, WIN16, CONSOLE, and MS-DOS applications running concurrently.
  • Supports any number of serial ports active concurrently with receive and transmit buffers of any size.
  • Supports baud rates in excess of 400K.
  • Provides automatic hardware flow control(RTS/CTS, DTR/DSR), as well as software flow control(XON/XOFF).
  • Provides seamless integration with COMM-DRV/Lib and COMM-DRV/Dos.
  • Supports the built in PC COM ports and ALL non-intelligent multiport cards based on the 8250, 16450, 16550, 16650, and 16750 family of UARTs.
  • Peek ahead virtually any number of bytes.
  • Interrupts, buffering, and flow control handled in 32 bit mode of the CPU in Ring 0.
  • Autodetects 16550 and uses it in high speed mode.
  • Allows sharing IRQs on supporting hardware.

COMM-DRV/VxD Application Programming Interface (API)

  • WCSCVxDBreakOff Resets the port from the break state.
  • WCSCVxDBreakOn Puts the port in the break state.
  • WCSCVxDBytesInRcvBuf Returns number of bytes in receive buffer.
  • WCSCVxDBytesInXmtBuf Returns number of bytes in transmit buffer.
  • WCSCVxDCleanup Closes an opened port.
  • WCSCVxDDtrOff Turn DTR off.
  • WCSCVxDDtrOn Turn DTR on.
  • WCSCVxDFlush Purges communication buffers.
  • WCSCVxDGetMetrics Return port statistics on specific items.
  • WCSCVxDGetPacket Get a packet of data.
  • WCSCVxDGetPort Get port metrics.
  • WCSCVxDGetRegister Read an 8250/16450/16550 register value.
  • WCSCVxDInit Map dynamically to the VxD.
  • WCSCVxDInitializePort Open a port.
  • WCSCVxDIsAllDataOut Returns true if transmit buffer is empty as well as the UART is empty.
  • WCSCVxDOpenPort Opens the serial port(preferred).
  • WCSCVxDPutPacket Output a packet of data.
  • WCSCVxDPutRegister Write to an 8250/16450/16550 register.
  • WCSCVxDRtsOff Turn RTS off.
  • WCSCVxDRtsOn Turn RTS on.
  • WCSCVxDSetBaudDiv Set new baud rate divisor(for non standard baud rates).
  • WCSCVxDSetPortCharacteristics Set new port characteristics(baud rates etc.).
  • WCSCVxDSetup Extended port open.
  • WCSCVxDSizeOfRcvBuf Get size of receive buffer.
  • WCSCVxdSizeOfXmtBuf Get size of transmit buffer.
  • WCSCVxDSpaceInRcvBuf Get available space in receive buffer.
  • WCSCVxdSpaceInXmtBuf Get available space in transmit buffer.
  • WCSCVxDViewPacket Non-destructively reads a packet of data.