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STR9 uart interrupt without polling

Hi '
I am using STR912Fw44 based board I want a code of uart that should jump to the interrupt handler whnn come character is typed from keyboard and print that and comes out from interrupt handler the code given in

http://www.keil.com/download/docs/331.asp

uses the buffer but we dont need buffer so how to handle it and I dont want to use SWI handler functions
can anyone sugggest simple code

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