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INC DPTR
DJNZ R2,LOOP
LCALL STOP;调用停止子程序
STAR:SETB SDA
SETB SCL
NOP
CLR SDA
CLR SCL
RET
SDATA:MOV R0,#08H
LOOP0:RLC A
MOV SDA,C
DJNZ R0,LOOP0