;輸入不超過4294967295的10進位制數，將其以二位的形式顯示

CODE SEGMENT

ASSUME CS:CODE

ORG 100H

START:

JMP BBB

X DD 0

MSG1 DB 10,13,"please input a number:","$"

MSG2 DB 10,13," B","$"

BBB:

PUSH CS

POP DS

PUSH CS

POP ES

LEA DX,MSG1

MOV AH,9

INT 21H

MOV WORD PTR X,0

MOV WORD PTR X+2,0

AGAIN1:

MOV AH,1

INT 21H

CMP AL,13

JE LINE0

SUB AL,30H

MOV AH,0

MOV SI,AX

SHL WORD PTR X,1

RCL WORD PTR X+2,1

MOV AX,WORD PTR X

MOV CX,WORD PTR X+2

SHL WORD PTR X,1

RCL WORD PTR X+2,1

SHL WORD PTR X,1

RCL WORD PTR X+2,1

ADD WORD PTR X,AX

ADC WORD PTR X+2,CX

ADD WORD PTR X,SI

ADC WORD PTR X+2,0

JMP AGAIN1

LINE0:

LEA DI,MSG2

INC DI

INC DI

MOV CX,32

MOV AX,WORD PTR X

MOV BX,WORD PTR X+2

AGAIN2:

SHL AX,1

RCL BX,1

JC LINE1

MOV BYTE PTR [DI],"0"

JMP LINE2

LINE1:

MOV BYTE PTR [DI],"1"

LINE2:

INC DI

LOOP AGAIN2

LEA DX,MSG2

MOV AH,9

INT 21H

MOV AH,8

INT 21H

MOV AH,4CH

INT 21H

CODE ENDS

END START