8051 programming quiz

Registers A and B are ------------------bit wide

Name a 16 bit register in 8051

What is the result of the following code and where is it kept?

MOV A, #15H

MOV R2 ,#13H

ADD A, R2

How many bytes space does the instruction MOV A, # 40H occupy?

Find the CY and AC flag bits for the following code:

MOV A, # 0C2h

ADD A, # 3DH

The mnemonic DJNZ stands for

Write a program to add 3 to the accumulator 4 times.

Write a program to save registers A and B on R3 and R5 of bank 2, respectively.

Show the status of the PSW register after the execution of the following instruction:

MOV A, #0BFH

ADD A, #1BH

Size of SP register is -------