[solved] – Question 8897

(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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Expert Answer

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