Setting the correct baud rate for the Quatech PCMCIA Cards.

COMM-DRV/NT by default assumes that the UARTs are being driven by a 1.8432 MHz crystal. As such when setting baud rates for the Quatech PCMCIA cards the effective baud rate will be incorrect. The Quatech PCMCIA card uses a 14.7456 MHz crystal. The following code will set the baud rate correctly.

int ComputeBaudDiv(int BaudRate)

{

return(14745600/(BaudRate*16));

}

//Correct baudrate indeces for PCMCIA card

WCSCVxDSetBaudDiv(BAUD9600,  ComputeBaudDiv(9600));

WCSCVxDSetBaudDiv(BAUD19200, ComputeBaudDiv(19200));

WCSCVxDSetBaudDiv(BAUD38400, ComputeBaudDiv(38400));

WCSCVxDSetBaudDiv(BAUD57600, ComputeBaudDiv(57600));

WCSCVxDSetBaudDiv(BAUD115200,ComputeBaudDiv(115200));

WCSCVxDSetBaudDiv(BAUDUSER00,ComputeBaudDiv(230400));

WCSCVxDSetPortCharacteristics(VxDPID,BAUD115200,PAR_NONE,LENGTH_8,STOPBIT_1,
PROT_RTSRTS);