;查表法廣告流水燈
       ORG   00H
       MOV P2,#80H
START:  MOV   DPTR,#TABLE    ; 將表的地址存入數(shù)據(jù)指針
LOOP:   CLR   A
        MOVC  A,@A+DPTR      ;到數(shù)據(jù)指針?biāo)傅牡刂啡〈a
        CJNE  A,#01,LOOP1   ; 取出的碼是否01H？否則跳到LOOP1
        JMP   START
LOOP1:   MOV   P1,A
        MOV   R3,#20
        CALL  DELAY
        INC   DPTR
        JMP   LOOP
 DELAY: MOV   R4,#20
 D1:    MOV   R5,#248
        DJNZ  R5,$
        DJNZ  R4,D1
        DJNZ  R3,DELAY
        RET
 TABLE: DB    0FEH,0FDH,0FBH,0F7H  ;左移
        DB    0EFH,0DFH,0BFH,7FH
        DB    0FEH,0FDH,0FBH,0F7H  ;左移
        DB    0EFH,0DFH,0BFH,7FH
        DB    7FH,0BFH,0DFH,0EFH    ;右移
        DB    0F7H,0FBH,0FDH,0FEH
        DB    7FH,0BFH,0DFH,0EFH    ;右移
        DB    0F7H,0FBH,0FDH,0FEH
        DB    00H,0FFH,00H,0FFH     ;閃爍
        DB    01H                   ;結(jié)束碼
        END