/* Determines if there are any characters in receiver register.  */
xtBoolean UARTFIFORxIsEmpty(unsigned long ulBase)
/* Determines if there are any characters in receiver register.  */
xtBoolean UARTFIFORxIsEmpty(unsigned long ulBase)
{
    xASSERT(UARTBaseValid(ulBase));
    return (xHWREG(ulBase + USART_SR) & USART_SR_RXNE);   
}