• 2022-10-30 问题

    指出下列指令源操作数的寻址方式:(如立即数寻址,直接寻址等) (1)MOV A , #00H ( ) (2)MOV A , 50H ( ) (3)MOV A , @R0 ( ) (4)MOV A , R5 ( ) (5)MOV A , @A+DPTR( ) (6)SJMP 70H ( ) (7)CLR A ( )

    指出下列指令源操作数的寻址方式:(如立即数寻址,直接寻址等) (1)MOV A , #00H ( ) (2)MOV A , 50H ( ) (3)MOV A , @R0 ( ) (4)MOV A , R5 ( ) (5)MOV A , @A+DPTR( ) (6)SJMP 70H ( ) (7)CLR A ( )

  • 2021-04-14 问题

    说出下列汇编程序中源操作数与目的操作数的寻址方式(1) MOV AH,F5H;(2) MOV AX, F58AH;(3) MOV AX,[2000H];(4) MOV AX,[BX];(5) MOV AX,10[SI];(6) MOV AX,[SI]10;(7) MOV AX,10[SI 10];(8) MOV AX, [BX][SI];(9) MOV AX, 10[BX][SI];

    说出下列汇编程序中源操作数与目的操作数的寻址方式(1) MOV AH,F5H;(2) MOV AX, F58AH;(3) MOV AX,[2000H];(4) MOV AX,[BX];(5) MOV AX,10[SI];(6) MOV AX,[SI]10;(7) MOV AX,10[SI 10];(8) MOV AX, [BX][SI];(9) MOV AX, 10[BX][SI];

  • 2021-04-14 问题

    指出下列指令哪些是错误的,错在哪里 (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

    指出下列指令哪些是错误的,错在哪里 (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

  • 2021-04-14 问题

    指出下列指令哪些是错误的,错在哪里 (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

    指出下列指令哪些是错误的,错在哪里 (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

  • 2021-04-14 问题

    下列程序段执行后,(R0)=_________,(7EH)=_________,(7FH)=_________. MOVR0,#7FH; MOV7EH,#0; MOV7FH,#40H; DEC@R0; DECR0; DEC@R0

    下列程序段执行后,(R0)=_________,(7EH)=_________,(7FH)=_________. MOVR0,#7FH; MOV7EH,#0; MOV7FH,#40H; DEC@R0; DECR0; DEC@R0

  • 2021-04-14 问题

    指出下列传送类指令中非法的指令(针对8086/8088 CPU)。 (1)MOV BX,AL (2)MOV BH,AL (3)MOV 100,CL (4)MOV SS,2400H (5)MOV [SI],[BX] (6)MOV [SI+4*3],BX (7)MOV AX,[BX][BP] (8)MOV AX,[SI][BP] (9)MOV AX,BX+DI (10)MOV AX,[BX+DI] (11)MOV SP,AX (12)MOV SP,[AX] (13)XCHG AH,AL (14)XCHG 200,AL (15)OUT 21H,AL (16)OUT 260H,AL

    指出下列传送类指令中非法的指令(针对8086/8088 CPU)。 (1)MOV BX,AL (2)MOV BH,AL (3)MOV 100,CL (4)MOV SS,2400H (5)MOV [SI],[BX] (6)MOV [SI+4*3],BX (7)MOV AX,[BX][BP] (8)MOV AX,[SI][BP] (9)MOV AX,BX+DI (10)MOV AX,[BX+DI] (11)MOV SP,AX (12)MOV SP,[AX] (13)XCHG AH,AL (14)XCHG 200,AL (15)OUT 21H,AL (16)OUT 260H,AL

  • 2022-05-29 问题

    以下指令那个是将AL寄存器中的第3位和第7位置1。( ) A: MOV AL, 0OR AL, 88H B: MOV AL, FFHOR AL, 88H C: MOV AL, FFHXOR AL, 88H D: MOV AL, FFHADN AL, 88H

    以下指令那个是将AL寄存器中的第3位和第7位置1。( ) A: MOV AL, 0OR AL, 88H B: MOV AL, FFHOR AL, 88H C: MOV AL, FFHXOR AL, 88H D: MOV AL, FFHADN AL, 88H

  • 2021-04-14 问题

    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,说明下列源操作数的寻址方式和物理地址? (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]

    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,说明下列源操作数的寻址方式和物理地址? (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]

  • 2021-04-14 问题

    设 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寄存器中的内容是多少? (1)MOV AX,1200H (2)MOV AX,BX (3)MOV AX,[1200H] (4)MOV AX,[BX] (5)MOV AX,[BX+1100H] (6)MOV AX,[BX+SI] (7)MOV AX,[BX+SI+1100H]

    设 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寄存器中的内容是多少? (1)MOV AX,1200H (2)MOV AX,BX (3)MOV AX,[1200H] (4)MOV AX,[BX] (5)MOV AX,[BX+1100H] (6)MOV AX,[BX+SI] (7)MOV AX,[BX+SI+1100H]

  • 2022-06-03 问题

    附合水准路线高差闭合差公式? A: fh=∑h测-∑h理 B: fh=∑h往+∑h返 C: fh=∑h测 D: fh=∑h测+∑h理

    附合水准路线高差闭合差公式? A: fh=∑h测-∑h理 B: fh=∑h往+∑h返 C: fh=∑h测 D: fh=∑h测+∑h理

  • 1 2 3 4 5 6 7 8 9 10