;串行通信接收程序清單 
        ORG    0100H
        MOV    TMOD,  #20H
        MOV    TH1,   #0F3H
        MOV    TL1,   #0F3H
        MOV    SCON,  #0D0H
        MOV    PCON,  #80H
        MOV    R0,    #30H
        MOV    R2,    #0AH
        SETB   TR1
S1:     JBC    RI,    S2
        AJMP   S1
S2:     MOV    A,     SBUF
        CLR    RI
        MOV    SBUF,   A
S3:     JBC    TI,    S4
        SJMP   S3
S4:     CLR    TI                                
        MOV    @R0,    A
        INC    R0
        DJNZ   R2,    S1
        SJMP   $
        END