If DX contains OOEEH and AX contains 0980, what is the result of: MOV BX.OFOH DI

Question

If DX contains OOEEH and AX contains 0980, what is the result of: MOV BX.OFOH DIV BX Repeat Question 8 for the instruction IDIV BX. What instruction is needed to find the signed 2's complement of CX? What are the results of CBW if AL contains 30H? What if AL contains 98H? What is the final value of AL in this series of instructions? MOV AL, 27H MOV BL,37H ADD AL, BL DAA If DX contains 7C9AH, what is the result of NOT DX? If AL contains 55H and BL contains AAH, what is the result of: AND AL,BL OR AL,BL XOR BL,AL What does SHL AL,1 do if AL contains 35H? What is the data in BX after SHR BX.CL if CL contains 6? Memory location 1000H contains the byte 9F. What instructions are needed to rotate it 1 bit right? Explain the difference between short and near jumps. What conditional jump instruction should be used after CMP AL,30H to jump when AL equals 30H? What instruction is needed in Question 19 to jump when AL is less than 30H? The lower byte of the flag register contains 95H. Which of the following instructions will actually jump? JZ JNC JP JA JGE JLE How many times does the NOP instruction execute in the following sequence? XYZ: ABC: MOV PUSH MOV NOP LOOP POP LOOP CX,20H CX CX, 9 ABC CX XYZ Registers AX, BX, and CX contain the respective values 2000H, 1000H, and 3000H. What is the result of CMPXCHG BX,CX?

Explanation / Answer

22) ABC : NOP

LOOP ABC

In the above loop NOP executed 9 times

XYZ :....

.......

POP CX # CX=20H

LOOP XYZ

Above loop executed 32 times

so, totally 32*9 =288 times NOP is executed

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