汇编语言实现键入三个两位的十进制数取数值中间数以二进制显示出来

求助各位大佬，这个能输入，不知道能比较不，反正感觉逻辑挺对的，但是显示中间的数二进制，他会出一个我没输过的随机一个数
DATASEGMENT
ADB0
BDB0
CDB0
BUFDB3
INNDB3DUP(0)
MESG0DB0DH,0AH,'INPUTNUMBER<99：S'
MESG1DB0DH,0AH,'THEMIDDLEENUMBER(INBINARY)IS:$'
DATAENDS
CODESEGMENT
ASSUMECS:CODE,DS:DATA
START:MOVAX,DATA
MOVDS,AX
LEASI,A
CALLREADDECIMAL
LEASI,B
CALLREADDECIMAL
LEASI,C
CALLREADDECIMAL
XORBX,BX
MOVBL,B
MOVAH,A
MOVAL,C
CMPAH,BL
JAEM1
M1:XCHGBL,AH
CMPAH,AL
JAE M2
M2:XCHGAH,AL
CMPBL,AL
JAE M3
M3:XCHGBL,AL
PRINT:MOVAH,9
LEADX,MESG1
INT21H
CALLPRINTBIN
MOUAX,4C00H
INT21H
printbin proc near
mov cx, 8
mov ah，2
p0:
rol bx, 1
mov dl, bl
and dl, 01h
xor dl,30h
int 21h
loop p0
ret
printbin endp
code ends
end start