帮我检查一下输出那里有什么问题，结果运行出来的是两个笑脸，郁闷
DATA SEGMENTZ DB '?????$'
X DB '?????$'
Y DB '?????$'
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX
MOV SI,4
MOV CX,5
PRINT1:
MOV AH,01H
INT 21H
AAS
MOV X[SI],AL
DEC SI
LOOP PRINT1
PLUS:
MOV DL,'+'
MOV AH,02H
INT 21H
MOV SI,4
MOV CX,5
PRINT2:
MOV AH,01H
INT 21H
AAS
MOV Y[SI],AL
DEC SI
LOOP PRINT2
DENG:
MOV DL,'='
MOV AH,02H
INT 21H
MOV CX,5
MOV SI,4
COUNT:
MOV AL,X[SI]
ADC AL,Y[SI]
AAA
MOV Z[SI],AL
DEC SI
LOOP COUNT
MOV CX,5
MOV SI,4
DISP:
MOV AL,Z[SI]
AAA
MOV Z[SI],AL
DEC SI
LOOP DISP
MOV DX,OFFSET Z
MOV AH,09H
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
END START
