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现有(DS)=2000H ,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=0B7H,(21203H)=65H,说明下列指令执行后AX寄存器的内容。 (1)MOV AX,1200H (2)MOV AX,BX (3)MOV AX,[1200H] (4)MOV AX,[BX] (5)MOV AX,1100H[BX] (6)MOV AX,[BX][SI] (7)MOV AX,1100H[BX][SI]
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更多 “ 现有(DS)=2000H ,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=0B7H,(21203H)=65H,说明下列指令执行后AX寄存器的内容。 (1)MOV AX,1200H (2)MOV AX,BX (3)MOV AX,[1200H] (4)MOV AX,[BX] (5)MOV AX,1100H[BX] (6)MOV AX,[BX][SI] (7)MOV AX,1100H[BX][SI]” 相关考题
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阅读以下有关80X86汇编语言的叙述,回答问题1和问题2,将解答填入对应栏内。【说明】本题由两部分组成,第一部分为计算AX寄存器的值,第二部分为判错题。已知DS=2000H,BX=0100H,SI=0002H,存储单元[20100H]到[20103H]依次存放12H、34H、56H、78H,[21200H]~[21203H]依次存放2AH、4CH、B7H、65H,说明下列每一条指令执行后AX寄存器的内容。(1)MOV AX,[1200H](2)MOV AX,[BX](3)MOV AX,[BX+1100H](4)MOV AX,[BX+SI](5)MOV AX,[BX][SI+1100H]
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指出下列指令中哪些是错误的,错在什么地方。 (1)MOV DL,AX (2)MOV 8650H,AX (3)MOV DS,0200H (4)MOV [BX],[1200H] (5)MOV IP,0FFH (6)MOV [BX+SI+3],IP (7)MOV AX,[BX][BP] (8)MOV AL,ES:[BP] (9)MOV DL,[SI][DI] (10)MOV AX,OFFSET 0A20H (11)MOV AL,OFFSET TABLE (12)XCHG AL,50H (13)IN BL,05H (14)OUT AL,0FFEH
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已知:DS=2000H,BX=0300H,SI=0002H,(20300H)=12H,(20301)=34H,(20302H)=56H,(20303H)=78H,(21400H)=2AH,(21401H)=4CH,(21402H)=B7H,(21403H)=65H 试说明下列指令执行完后AX寄存器的内容:MOV AX,1400H
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设有关寄存器及存储单元的内容为:DS=2000H,BX=0100H,AX=1200H,SI=0002H,[20100H]=12H,[20101H]=34H,[20102H]=56H,[20103H]=78H,[21200H]=2AH,[21201H]=4CH,[21202H]=0B7H,[21203H]=65H,若MOV AX,1100H[BX][SI]指令单独执行后,AX为多少?
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设有关寄存器及存储单元的内容为:DS=2000H,BX=0100H,AX=1200H,SI=0002H,[20100H]=12H,[20101H]=34H,[20102H]=56H,[20103H]=78H,[21200H]=2AH,[21201H]=4CH,[21202H]=0B7H,[21203H]=65H,若MOV [BX][SI],AL指令单独执行后,[20102H]为多少?
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设有关寄存器及存储单元的内容为:DS=2000H,BX=0100H,AX=1200H,SI=0002H,[20100H]=12H,[20101H]=34H,[20102H]=56H,[20103H]=78H,[21200H]=2AH,[21201H]=4CH,[21202H]=0B7H,[21203H]=65H,若MOV DX,1100H[BX]指令单独执行后,DX为多少?
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分别说明下列指令的源操作数和目的操作数各采用什么寻址方式。 (1)MOV AX,2408H (2)MOV CL,0FFH (3)MOV BX,[SI] (4)MOV 5[BX],BL (5)MOV [BP+100H],AX (6)MOV [BX+DI],’$’ (7)MOV DX,ES:[BX+SI] (8)MOV VAL[BP+DI],DX (9)IN AL,05H (10)MOV DS,AX
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已知:DS=1000H,BX=0200H,SI=02H,内存10200H~10205H 单元的内容分别为10H, 2AH,3CH,46H,59H,6BH。下列每条指令执行完后AX 寄存器的内容各是什么? (1)MOV AX,0200H (2)MOV AX,[200H] (3)MOV AX,BX (4)MOV AX,3[BX] (5)MOV AX,[BX+SI] (6)MOV AX,2[BX+SI]
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分析下列指令的正误,对于错误的指令要说明原因并加以改正。 (1) MOV AH,BX (2) MOV [BX],[SI] (3) MOV AX,[SI][DI] (4) MOV MYDAT[BX][SI],ES:AX (5) MOV BYTE PTR[BX],1000 (6) MOV BX,OFFSET MAYDAT[SI] (7) MOV CS,AX (8) MOV DS,BP
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设(DS)=2000H,(ES)=2100H,(SS)=1500H,(SI)=00A0H,(BX)=0100H,(BP)=0010H,数据变量VAL的偏移地址为0050H,请指出下列指令的源操作数字段是什么寻址方式?它的物理地址是多少? (1) MOV AX,21H (2) MOV AX,BX (3) MOV AX,[1000H] (4) MOV AX,VAL (5) MOV AX,[BX] (6) MOV AX,ES:[BX] (7) MOV AX,[BP] (8) MOV AX,[SI] (9) MOV AX,[BX+10] (10) MOV AX,VAL[BX] (11) MOV AX,[BX][SI] (12) MOV AX,VAL[BX][SI]
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设有关寄存器及存储单元的内容为:DS=2000H,BX=0100H,AX=1200H,SI=0002H,[20100H]=12H,[20101H]=34H,[20102H]=56H,[20103H]=78H,[21200H]=2AH,[21201H]=4CH,[21202H]=0B7H,[21203H]=65H,若MOV AX,1800H指令单独执行后,AX为多少?
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设有关寄存器及存储单元的内容为:DS=2000H,BX=0100H,AX=1200H,SI=0002H,[20100H]=12H,[20101H]=34H,[20102H]=56H,[20103H]=78H,[21200H]=2AH,[21201H]=4CH,[21202H]=0B7H,[21203H]=65H,若MOV BX,[1200H]指令单独执行后,BX为多少?
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下列指令中,源操作数的寻址方式中,()属于寄存器相对寻址。A、MOV AX,[4000H]B、MOV [BX],AXC、SUB AX,2000HD、MOV AX,[SI+12H]E、MOV CX,[BX]F、MOV AX,[SI+BX+10H]
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下列指令中,源操作数的寻址方式中,()属于寄存器寻址。A、MOV AX,[4000H]B、MOV [BX],AXC、SUB AX,2000HD、MOV AX,[SI+12H]E、MOV CX,[BX]F、MOV AX,[SI+BX+10H]
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已知:DS=2000H,BX=0300H,SI=0002H,(20300H)=12H,(20301)=34H,(20302H)=56H,(20303H)=78H,(21400H)=2AH,(21401H)=4CH,(21402H)=B7H,(21403H)=65H 试说明下列指令执行完后AX寄存器的内容:MOV AX,[BX]
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现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=0B7H,(21203H)=65H,说明下列指令执行后AX寄存器的内容。 (1)MOVAX,1200H (2)MOVAX,BX (3)MOVAX,[1200H] (4)MOVAX,[BX] (5)MOVAX,1100H[BX] (6)MOVAX,[BX][SI] (7)MOVAX,1100H[BX][SI]
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现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,1100[BX]。
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现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,BX。
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现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,1100[BX][SI]。
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现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,[1200H]。
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完成同指令XCHG AX,BX相同功能的指令或指令序列是()。A、MOV AX,BXB、MOV BX,AXC、PUSH AX POP BXD、MOV CX,AX MOV AX,BX MOV BX,CX
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设DS=1000H,ES=2000H,SS=3500H,SI=00A0H,DI=0024H,BX=0100H,BP=0200H, 数据段中变量名为VAL 的偏移地址值为0030H,试说明下列源操作数字段的寻址方式是什 么?物理地址值是多少? (1)MOV AX,[100H] (2)MOV AX,VAL (3)MOV AX,[BX] (4)MOV AX,ES:[BX] (5)MOV AX,[SI] (6)MOV AX,[BX+10H] (7)MOV AX,[BP] (8)MOV AX,VAL[BP][SI] (9)MOV AX,VAL[BX][DI] (10)MOV AX,[BP][DI]
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问答题现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,[1200H]。
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问答题现有(DS)=2000H,(BX)=0100H,(SI)=0002H,(20100H)=12H,(20101H)=34H,(20102H)=56H,(20103H)=78H,(21200H)=2AH,(21201H)=4CH,(21202H)=B7H,(21203H)=65H,试说明下列各条指令执行完后AX寄存器的内容。MOV AX,1100[BX][SI]。
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