汇编语言 – 两个多位数相加的运算
CRLF MACRO
MOV DL,0DH
MOV AH,02H
INT 21H
MOV DL,0AH
MOV AH,02H
INT 21H
ENDM
DATA SEGMENT
DATA1 DB 33H,39H,31H,37H,39H,30H
DATA2 DB 36H,35H,30H,38H,39H,30H
DATA ENDS
STACK SEGMENT
STA DB 20 DUP('?')
TOP EQU 20
STACK ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA,SS:STACK,ES:DATA
START: MOV AX,DATA
MOV DS,AX
MOV AX,STACK
MOV SS,AX
MOV AX,TOP
MOV SP,AX
MOV SI,OFFSET DATA2
MOV BX,05
CALL DISPL
CRLF
MOV SI,OFFSET DATA1
MOV BX,05
CALL DISPL
CRLF
MOV DI,OFFSET DATA2
CALL ADDA
MOV BX,06
CALL DISPL
CRLF
MOV AX,4C00H
INT 21H
DISPL PROC NEAR
DSI: MOV AH,02
MOV DL,[SI+BX-1]
INT 21H
DEC BX
JNZ DSI
RET
DISPL ENDP
ADDA PROC NEAR
MOV DX,SI
MOV BP,DI
MOV BX,05
AD1: SUB BYTE PTR[SI+BX-1],30H
SUB BYTE PTR[DI+BX-1],30H
DEC BX
JNZ AD1
MOV SI,DX
MOV DI,BP
MOV CX,06
CLC
AD2: MOV AL,[SI]
MOV BL,[DI]
ADC AL,BL
AAA
MOV [SI],AL
INC SI
INC DI
LOOP AD2
MOV SI,DX
MOV DI,BP
MOV BX,06
AD3: ADD BYTE PTR[SI+BX-1],30H
ADD BYTE PTR[DI+BX-1],30H
DEC BX
JNZ AD3
RET
ADDA ENDP
CODE ENDS
END START
EM8086软件仿真结果
