Question

(a) Assemble the following instructions and show the changes in given Accumulator register and flags after each instruction execution.

MOV AL, 8Bh ; CF = ?, SF = ?, PF = ?, ZF = ?

ADD AL, 22h ; CF = ?, SF = ?, PF = ?, ZF = ?

AND Al, 1000101b ; CF = ?, SF = ?, PF = ?, ZF = ?

OR Al, 9Ah ; CF = ?, SF = ?, PF = ?, ZF = ?

XOR AL, 10101011b ; CF = ?, SF = ?, PF = ?, ZF = ?

TEST AL, 2 ; CF = ?, SF = ?, PF = ?, ZF = ?

CMP AL, 58 ; CF = ?, SF = ?, PF = ?, ZF = ?

ADC AL, 11110000b ; CF = ?, SF = ?, PF = ?, ZF = ?

SHR AL,2 ; CF = ?, SF = ?, PF = ?, ZF = ?
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b)
Write a subroutine that can calculate the sum of an array and also save the result into DX.
( Array’s length is 20)
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Answer 1

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