;     串行靜態顯示  DISP1.ASM   5　LED
        ;   P3.0--DIN   P3.1--CLK
        DBUF0  EQU  30H
        TEMP   EQU  40H
        DIN    BIT  P3.0   
        CLK    BIT  P3.1
      ORG   0000H
      LJMP  START
      ORG   0030H
  START:
      MOV   30H,#8
      MOV   31H,#9
      MOV   32H,#0Ch
      MOV   33H,#5
      MOV   34H,#1

 DISP:MOV   R0,  #DBUF0
      MOV   R1,  #TEMP
      MOV   R2,  #5
 DP10:MOV   DPTR,#SEGTAB
      MOV   A,   @R0
      MOVC  A,   @A+DPTR
      MOV   @R1, A
      INC   R0
      INC   R1
      DJNZ  R2,  DP10
      MOV   R0,  #TEMP
      MOV   R1,  #5
 DP12:MOV   R2,  #8
      MOV   A,   @R0
 DP13:RLC   A
      MOV   DIN,C
      CLR   CLK
      SETB  CLK
      DJNZ  R2,  DP13
      INC   R0
      DJNZ  R1,  DP12
      SJMP  $
SEGTAB:  DB 3FH,06H,5BH,4FH,66H,6DH
         DB 7DH,07H,7FH,6FH,77H,7CH
         DB 39H,5EH,7BH,71H,00H,40H
      END