Line Status Register http://en.wikibooks.org/wiki/Serial_Programming/8250_UART_Programming#Line_Status_Register http://en.wikibooks.org/wiki/Serial_Programming/

Line Status Register http://en.wikibooks.org/wiki/Serial_Programming/8250_UART_Programming#Line_Status_Register http://en.wikibooks.org/wiki/Serial_Programming/8250_UART_Pr... Had to look it up, my brain was coming up with Logical Shift Right.