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΢»úÔ­Àí¼°½Ó¿Ú¼¼Êõ¿ÎºóϰÌâ¼°²Î¿¼´ð°¸(6)

À´Ô´£ºÍøÂçÊÕ¼¯ ʱ¼ä£º2026-08-22
µ¼¶Á£º 04H 04H FFH £¨2£© 4.8´ð£º£¨1£©myl_b db ¡®Personal Computer£ ¯- 04H 04H 04H 34H 12H FBH FFH - - - - - - - - - - - - £¨2£©my2_b db 64H £¨3£©my3_w dw 100 dup(?) £¨4£©my4_c equ 100 £¨5£©my5_c equ 4.9´ð£º

04H 04H FFH £¨2£©

4.8´ð£º£¨1£©myl_b db ¡®Personal Computer£¡¡¯- 04H 04H 04H 34H 12H FBH FFH - - - - - - - - - - - -

£¨2£©my2_b db 64H

£¨3£©my3_w dw 100 dup(?) £¨4£©my4_c equ 100

£¨5£©my5_c equ

4.9´ð£º£¨1£© mov byte ptr [bx],256£»¸ÄÕý¨D¨Dmov word ptr [bx],256

£¨2£© mov bx,offset opw[si]£»¸ÄÕý¨D¨Dmov bx,offset opw £¨3£© add opbl,opb2£»¸ÄÕý¨D¨Dadd al,opb2 £¨4£© mov opbl,al+l£»¸ÄÕý¨D¨Dmov opbl,al £¨5£© sub al,opw£»¸ÄÕý¨D¨Dsub al,opb1

£¨6£© mov [di],1234h£»¸ÄÕý¨D¨Dmov word ptr [di],1234h 4.10´ð£º .MODEL SMALL .DATA X DW 1234H Y DW 4321H MAX DW ? .CODE

START: MOV AX,@DATA MOV DS,AX MOV AX,X CMP AX,Y JNZ NEQU

MOV MAX,0FFFFH JMP STOP NEQU: JC NEXT MOV MAX,X JMP STOP

NEXT: MOV MAX,Y STOP: MOV AX,4C00H INT 21H END START

4.11´ð£º.MODEL SMALL .DATA

DAT DW 9234H SIGN DW ? .CODE

START: MOV AX,@DATA MOV DS,AX

MOV AX,DAT

CMP AX,0 JZ STOP

TEST AX,8000H JNZ FU MOV SIGN,0 JMP STOP

FU: MOV SIGN,0FFH STOP: MOV AX,4COOH INT 21H END START 4.12´ð£º DISPLAY MACRO

MOV AH,2 INT 21H ENDM

.MODEL SMALL .DATA X DW 1230H Y DW 1234H Z DW 1234H

.CODE

START: MOV AX,@DATA

MOV DS,AX MOV AX,X MOV BX,Y CMP AX,Z JNZ N1 CMP AX,BX JNZ N2 MOV DL,'Y' DISPLAY

STOP: MOV AX,4C00H

INT 21H

N1: CMP AX,BX

JNZ N3 N2: MOV DL,'X'

DISPLAY JMP STOP N3: CMP BX,Z

JNZ N4 JMP N2 N4: MOV DL,'N'

DISPLAY JMP STOP END START 4.13´ð£º .MODEL SMALL .DATA

DAT DB 12H,23H,0F3H,6AH,20H,0FEH,10H,C8H,25H,34H SUM DW ?

.CODE

START: MOV AX,@DATA

MOV DS,AX MOV CX,10 MOV DX,0 LEA BX,DAT AGAIN: MOV AL,[BX] CBW

MOV DX,AX INC BX LOOP AGAIN MOV SUM,DX MOV AX,4C00H INT 21H END START 4.14´ð£º

.MODEL SMALL .CODE

START: MOV AX,2000H

MOV DS,AX MOV SI,0 MOV DX,0 MOV CX,0FFFFH AGAIN: MOV AL,[SI] CMP AL,20H JNZ NEXT INC DX

NEXT: INC SI LOOP AGAIN MOV AX,4C00H INT 21H END START

4.15. ´ð£ºprocname PROC [attributes field][USES register list][,parameter field] ©«

Procname ENDP

pushºÍpopµÄʹÓÃÊÇΪÁ˱£»¤×Ó³ÌÐòµÄµ÷ÓõÄÏÖ³¡£¬±ÈÈç¼Ä´æÆ÷µÄÖµ¡£±¾ÀýÖÐÒª±£»¤µÄ¼Ä´æÆ÷ÊÇaxºÍdx¡£

jiafa PROC;ÓÃCX£¬BX´«²ÎÊý¨D¨DÊý¾ÝµÄ¸öÊýºÍÊý¾ÝµÄÆðʼµØÖ·£¬½á¹û·ÅÔÚ×ÖÄÚ´æµ¥ÔªSUMºÍSUM£«1

push ax push dx xor ax,ax xor dx,dx

again: add ax, [bx]

adc dx,0 inc bx

inc bx loop again mov sum,ax mov [sum+1],dx pop dx pop ax ret

jiafa ENDP

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