SerialPort.bytesAvailable() not working on a physical PCIe card port

[sanwar0asu0edu]

Hello,

I have a StarTech 2-Port Serial PCIe card (2S232422485-PC-CARD). The two ports on it are tied together using a crossover cable. The setup works in Putty (terminal emulator), I can see data typed on one port appear on the other.

When I replace one end with Java code based on example available on jSerialComm website, the SerialPort.bytesAvailable() never becomes greater than zero, but if I explicitly call SerialPort.readBytes(), I can read the data that was sent.

Test.java

ode attached, output below:
setParameters: true
setFlowControl: true
openPort: true
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
bytesAvailable: 0
8 bytesRead: vvvvvvvv
closePort: true

Any suggestions would be appreciated.

Thanks.