给出MOV指令执行后的结果，设有关寄存器及存储单元内容如下：DS=2000H, ES=2200H, BX=0100H, SI=0004H, (22100H)=12H, (22101H)=34H, (22102H)=56H, (22103H)=78H, (22104H)=9AH, (22105H)=0BCH, (20100H)=1AH, (20101H)=2BH, (20103H)=3CH, (20104H)=4DH, (20105H)=5EH, (20106H)=6FH。 (1)MOV AX, ES:[BX][SI] (2)MOV AX, BX (3)MOV AX, [BX] (4)MOV AX, [BX+SI] (5)MOV AX, [BX+SI+01]
举一反三
- BAS DB 11,22,33,44,55 NUM DB 10,20,30,40,50 IN DB 1,2,3 代码段定义如下: MOV BX,OFFSET BAS LEA SI,IN MOV DI,4 MOV AX,[SI+2] ;(AX)=【1】H XCHG AX,[SI] ;(AX)=【2】H MOV AX,4[BX] ;(AX)=【3】H MOV AX,[BX][DI] ;(AX)=【4】H
- 1.设有关寄存器及存储单元的内容如下：(DS)=2000H, (BX)=0100H, (AX)=1200H, (SI)=0002H, (20100H)=12H, (20101H)=34H, (20102H)=56H, (20103H)=78H, (21200H)=2AH, (21201H)=4CH, (21202H)=0B7H, (21203H)=65H.试说明下列各条指令单独执行后相关寄存器或存储单元的内容。(1)MOV AX, 1800H (2) MOV AX, BX(3) MOV BX, [1200H] (4) MOV DX, 1100[BX](5) MOV [BX][SI], AL (6) MOV AX, 1100[BX][SI]
- 设有 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。（1） MOV AX,[1200H]AX=______（2） MOV AX,[BX]AX=______（3） MOV AX,1100[BX]AX=______（4） MOV AX,[BX][SI]AX=______（5） MOV AX,1100[BX][SI]AX=______
- 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。(1) MOV AX, 1200H______ (2) MOV AX, BX______ (3) MOV AX, [1200H]______ (4) MOV AX, [BX]______ (5) MOV AX, 1100[BX]______ (6) MOV AX, [BX][SI]______ (7) MOV AX, 1100[BX][SI]______
- 写出下列程序段执行后AX的值为多少？ MOV AX, 1234H; AX=(1)H MOV CL, 4 AND AL, 0FH; AX= (2) H ADD AL, 30H; AX= (3)H SHL AH, CL; AX= (4)H AND AH, 0F3H; AX= (5)H