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
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
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
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
执行下列程序段后,写出AX= 【12】 H。 MOV AL,87 MOV CL,4 MOV AH,AL AND AL,OFH OR AL,30H SHR AH,CL OR AH,30H
执行下列程序段后,写出AX= 【12】 H。 MOV AL,87 MOV CL,4 MOV AH,AL AND AL,OFH OR AL,30H SHR AH,CL OR AH,30H
阅读下面程序段: MOV AX,1234H MOV CL,4 ROR AX,CL INC AX MOV BX,0 ADD BX,AX 该程序段执行后,AX=______H,BX=_______ H。(注:(1)字符全部大写,并且为半角字符)
阅读下面程序段: MOV AX,1234H MOV CL,4 ROR AX,CL INC AX MOV BX,0 ADD BX,AX 该程序段执行后,AX=______H,BX=_______ H。(注:(1)字符全部大写,并且为半角字符)
已知:(30H)=23H,(31H)=13H,(40H)=72H,(41H)=08H 执行: MOV A,30H ADD A,40H DA A MOV 30H,A MOV A,31H ADDC A,41H DA A MOV 31H,A 则结果为:(30H)=______H,(31H)=______H,(40H)=______H,(CY)=______。
已知:(30H)=23H,(31H)=13H,(40H)=72H,(41H)=08H 执行: MOV A,30H ADD A,40H DA A MOV 30H,A MOV A,31H ADDC A,41H DA A MOV 31H,A 则结果为:(30H)=______H,(31H)=______H,(40H)=______H,(CY)=______。
根据下列程序段运行情况,将运行结果和指令分别补充完整。 (1)( );(A)=10H ( );(B)=10H ( );(A)=20H MOV 23H,A;(23H)=20H ( );(A)=21H MOV 24H,A;(24H)=21H INC A ;(A)=22H ( );(25H)= 22H (2)MOV A,#50H;(A)=( )H MOV R0,A;(R0)=( )H MOV @R0,#30H;(50H)=( )H ADD A,@R0;(A)=( )H MOVX @R0,A;(50H)=( )H
根据下列程序段运行情况,将运行结果和指令分别补充完整。 (1)( );(A)=10H ( );(B)=10H ( );(A)=20H MOV 23H,A;(23H)=20H ( );(A)=21H MOV 24H,A;(24H)=21H INC A ;(A)=22H ( );(25H)= 22H (2)MOV A,#50H;(A)=( )H MOV R0,A;(R0)=( )H MOV @R0,#30H;(50H)=( )H ADD A,@R0;(A)=( )H MOVX @R0,A;(50H)=( )H
TABLE DW 10, 20, 30, 40 ┇ MOV BX, OFFEST TABLE ADD BX, 4 MOV AX, [BX]上述指令序列执行后,AX的内容为 A: 10 B: 20 C: 30 D: 40
TABLE DW 10, 20, 30, 40 ┇ MOV BX, OFFEST TABLE ADD BX, 4 MOV AX, [BX]上述指令序列执行后,AX的内容为 A: 10 B: 20 C: 30 D: 40
TABLE DW 10, 20, 30, 40 ┇ MOV BX, OFFEST TABLE ADD BX, 4 MOV AX, [BX] 上述指令序列执行后,AX的内容为
TABLE DW 10, 20, 30, 40 ┇ MOV BX, OFFEST TABLE ADD BX, 4 MOV AX, [BX] 上述指令序列执行后,AX的内容为
源操作数是寄存器寻址是( )。 A: MOV A, B: 12H C: MOV R7,12H D: MOV R0,A E: MOV 12H,C
源操作数是寄存器寻址是( )。 A: MOV A, B: 12H C: MOV R7,12H D: MOV R0,A E: MOV 12H,C
下面_____________语句有语法错误。 A: mov eax, ebx B: byte 20 C: again: byte 20 D: mov al, bl ;
下面_____________语句有语法错误。 A: mov eax, ebx B: byte 20 C: again: byte 20 D: mov al, bl ;