hi all Help me out

hi everybody..
I am new in the Embedded programming ..
i am writting the keyboard driver for microprocessor..
the status of UART tells me if any data (from keyboard) received or not
from the flag register
the flag register is of 32 bit ...

1) How can i check the pericular bit in this register set or not?
2) the receiver buffer is of 32 bit but data from keyboard comes in
8bit format..
How can i seperate the 8bit from 32 bit receiver buffer?

plz help me out...

Thanks

.

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