Question

12. For each instruction in this question, assume that register contains the given contents before the instruction is executed. All values are Hex, Contents of the register (Before) al-coh Contents of the register (After) Instruction ZF CF OF SF | add al, 40h ;assume values are unsigned Int | add bh, 9Ah ;assume values are signed Int | add cl, 52h ;assume values are signed Int | add bh, 01h ;assume values are bh=66h cl=40h bh= the value from unsigned Int the last operation

Answer 1

Solution:

12. For each instruction in this question, assume that register contains the given contents before the instruction is executed. All values are Hex, Contents of the register (Before) al-coh add al, 40h ;assume values are Contents of the register (After) Instruction ZF CF OF SF 0 unsigned Int signed Int signed Int bh-66h add bh, 9Ah assume values are 00h cl-40h add cl, 52h ;assume values are 92h 0 bh- the add bh, 01h ;assume values are value from unsigned Int the last operation 01h

Explanation:

Yalues are (insiqned int 100 0000 + 0100 0000 10000 0000 aL= 00 lau CE = 1 C since there wa a Carry) OF=1 (Ibit lage to bit in a) blogs : Odd bh,9Ah 0110 010 +) 1001 1010 so, bh= 6649A 다 00 SF 0 2f- 1 add cl,S2h So, CL 40+ 52. 0100 000o + 0101 0010 0 01001 0 sesutt SfO NO Native )

bh r. 00h add bh ,0lh (+) 0000 0001 bh- 01 h
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