8051 programming quiz

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

Name a 16 bit register in 8051

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

MOV A, #15H

MOV R2 ,#13H

ADD A, R2

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

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

MOV A, # 0C2h

ADD A, # 3DH

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The mnemonic DJNZ stands for

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

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

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

MOV A, #0BFH

ADD A, #1BH

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