Hi I would like help finding out these answers please. What happens if you repea

Question

Hi

I would like help finding out these answers please.

What happens if you repeatedly read a character from a serial port Receive Data Register (RDR) without first checking that the Receive Data Ready (RDR) bit is 1? Select one a. You would never receive a valid character b. You would likely "receive" the same character multiple times. c. The CPU would wait until a valid character has been received before executing the "lw" instruction d. The CPU would generate a General Protection Fault (GPF) exception, unless-by chance-the RDR bit happened to be1

Explanation / Answer

4. What is the difference between device register and ordinary memory location?

Answer: Arithmetic assembly instructions can be manipulate by device registers and l/w and s/w can access by RAM

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