/* Sets the states of the RTS modem control signals and trigger level. 
The  */
void UARTModemControlSet(unsigned long ulBase, unsigned long ulControl)
/* Sets the states of the RTS modem control signals and trigger level. 
The  */
void UARTModemControlSet(unsigned long ulBase, unsigned long ulControl)
{
    xASSERT(UARTBaseValid(ulBase));
    xHWREG(ulBase + USART_MCR) |= USART_MCR_HFC_EN;
    xHWREG(ulBase + USART_MCR) &= 0xFFFFFFFC;
    xHWREG(ulBase + USART_MCR) |= ulControl;
}