一个汇编语言小编程问题,运行后出现已堆乱码,电脑发出“滴滴”响声,大神求救!

STR2 DB '1：Load Game',0AH,0DH
STR3 DB '2：Save Game',0AH,0DH
STR4 DB '3：Options',0AH,0DH
STR5 DB '4：Exit',0AH,0DH
STR6 DB '************************',0AH,0DH,'$'
DATA ENDS

CODE SEGMENT
ASSUME DS:DATA,CS:CODE
START:
MOV AX,CODE
MOV DS,AX

MOV AH,09H
LEA DX,STR1
INT 21H

MOV AH,4CH
INT 21H

CODE ENDS
END START