程序执行完后,寄存器AH的值为4,寄存器AL的值为74H. 请教计算过程? MOV AH,4 MOV AL,24 MOV BL,9 DIV BL

2025-02-12 21:05:04
推荐回答(4个)
回答1:

0H-1FFFFH (2)12340H-2233FH (3)23000H-32FFFH (4)E0000H-EFFFFH (5)AB000H-BAFFFH
12、若当前SS=3500H,SP=0800H,堆栈段在存储器中的物理地址为35800H,若此时入栈10个字节,SP内容是07F6H,若再出栈6个字节,SP为07FCH
3、
(1)MOV AX,[100H]源操作数字段的寻址方式是直接寻址,物理地址值是 10100H
(2)MOV AX,VAL源操作数字段的寻址方式是直接寻址,物理地址值是 10030H
(3)MOV AX,[BX]源操作数字段的寻址方式是寄存器间接寻址,物理地址值是 10100H
(4)MOV AX,ES:[BX]源操作数字段的寻址方式是寄存器间接寻址,物理地址值是 20100H
(5)MOV AX,[SI]源操作数字段的寻址方式是寄存间接寻址,物理地址值是 100A0H
(6)MOV AX,[BX+10H]源操作数字段的寻址方式是寄存器相对寻址,物理地址值是 10110H
(7)MOV AX,[BP]源操作数字段的寻址方式是寄存器间接寻址,物理地址值是 35200H
(8)MOV AX,VAL[BP][SI]源操作数字段的寻址方式是基址变址寻址,物理地址值是 10100H
(9)MOV AX,VAL[BX][DI]源操作数字段的寻址方式是基址变址寻址,物理地址值是 10124H
(10)MOV AX,[BP][DI]源操作数字段的寻址方式是基址变址寻址,物理地址值是 35224H
6、
(1)MOV DL,AX类型不匹配,字节与字不能传送
(2)MOV 8650H,AX 目的操作数不能为立即数
(3)MOV DS,0200H 立即数不能送段寄存器
(4)MOV [BX],[1200H] 两内存单元不能直接操作
(5)MOV IP,0FFH操作数不能为IP
(6)MOV [BX+SI+3],IP 操作数不能为IP
(7)MOV AX,[BX][BP]两个基寄存器不能同时作为地址
(8)MOV AL,ES:[BP] 可以是正确的
(9)MOV DL,[SI][DI]两变址寄存器不能同时作为地址
(10)MOV AX,OFFSET 0A20H错误在OFFSET不用作为数值地址操作符
(11)MOV AL,OFFSET TABLE类型不匹配,地址为字,不能传送给字节
(12)XCHA AL,50H 立即数不用作为XCHG指令的操作数
(13)IN BL,05H 输入指令为累加器专用指令,不用BL,只能用AL
(14)OUT AL,0FFEH 端口地址超过8位应该用DX间接寻址
7、
LEA BX,TABLE
MOV AL,5
XLAT
MOV DH,AL
MOV AL,7
XLAT
MOV DL,AL
MOV BX,DX

8、
PUSH AX SP=00FEH
PUSH BX SP=00FCH
POP BX SP=00FEH
POP AX SP=0100H
1、
A1 DW 23H, 5876H 变量占4个字节
A2 DB 3 DUP(?), 0AH, 0DH, ‘$’变量占6个字节
A3 DD 5 DUP(1234H, 567890H) 变量占40个字节
A4 DB 4 DUP(3 DUP(1, 2, ‘ABC’)) 变量占60个字节
2、
MOV AX,0066H
MOV AL,0FFH
MOV AX,0FFH
AND AL,2
OR AX,02FFH
4、
PLENTH的值为22,表示PLENTH与PAR之间的字节数
7、用1024×1位的RAM芯片组成16K×8位的存储器,需要128个芯片,在地址线中有10位参与片内寻址,6位组合成片选择信号(设地址总线为16位)
8、现有一存储体芯片容量为512×4位,若要用它组成4KB的存储器,需要16个这样的芯片,每块芯片需要9条寻址线,整个存储系统最少需要12条寻址线。

回答2:

就是计算1060除以9,计算机是十六进制表示0x424就是,十进制1060。

回答3:

MOV AH,4 //AH 为4 (都是16进制)
MOV AL,24 //AL为24 A为 424(hex)
MOV BL,9 //BL为9 BH没设 B=9(都是16进制)
DIV BL //整除运算 424整除以9=75(都是16进制)
所以结果AH=00 AL=75 BH=00 BL=07 CY和OV置0(都是16进制)
(我算错了?高手帮忙看看)

回答4:

从计算结果看,ah=7,al=75h

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