Due This in assembly for MSP430

Write an assembly language program to add the two halves (upper and lower bytes) of register R5. The program should store the result in the upper byte of register R6, and clear the lower byte of R6. The program is expected to preserve the data of register R5. Please write clearly and include comments. Write an assembly language program to add the two halves (upper and lower bytes) of register R5. The program should store the result in the upper byte of register R6, and clear the lower byte of R6. The program is expected to preserve the data of register R5. Please write clearly and include comments