Write a sequence of assembly language statements to set the baud rate register to the value BR300 just determined in the previous question. Write a function named tx Enabled that returns with the...

Write a sequence of assembly language statements to set the baud rate register to the value BR300 just determined in the previous question.

Write a function named tx Enabled that returns with the carry flag clear if the USART transmitter is disabled, or the  carry flag set if the transmitter is enabled. This is just about the transmitter, not the receiver.