好心人给看看哪错了

data segment
data1 db '5231'
data2 db '9389'
data ends
code segment
assume cs:code, ds:data, es:data
start: mov ds, ax
mov es, ax
lea si, data1
lea di, data2
mov cx, 4
jia: mov al, data1[si]
adc data2[di], al
aaa
add al, 30h
inc si
inc di
loop jia
mov cx, 5
xian: mov dl, data2[di]
mov ah, 02h
int 21h
dec di
loop xian
mov ah, 4ch
int 21h
code ends
end start

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