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I am using the uVision RealView MDK -ARM 4.02 trial version. I am
simulating the LM3S5791. I am simulating usart0. I execute the
driverlib functions, 

 
UARTConfigSetExpClk(UART0_BASE,12000000,19200,
(UART_CONFIG_WLEN_8|UART_CONFIG_STOP_ONE| UART_CONFIG_PAR_NONE</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator></channel></rss>