clr p1.4      ;ᘌ¦(du¨¬)51†ÎƬ™C(j¨©)ŒW(xu¨¦)Á•(x¨ª)°å ¸ù“þ(j¨´)Ô­ÀíˆDÎÒ‚ƒÐè´òé_(k¨¡i)P1.4
ORG 0000H
AJMP START

START:
MOV R5,#08       ;ÔO(sh¨¨)ÖÃP0¿Ú×óÒƴΔµ(sh¨´)
MOV A,#0FEH      ;ÔO(sh¨¨)¶¨P0¿ÚµÄ³õʼֵ
LOOP:            ;P0¿ÚÁ÷Ë®Ÿô³ÌÐò
  MOV P0,A         ;
  Rr A            ; Ñ­­h(hu¨¢n)ÓÒÒÆ
  CALL DELAY     ;Õ{(di¨¤o)ÓÃÑÓ•r(sh¨ª)³ÌÐò
  DJNZ R5,LOOP    ;׌loopÓ‹(j¨¬)”µ(sh¨´)8´Î
  MOV P0,#0FFH      ;êP(gu¨¡n)é]P0¿ÚµÄËùÓПô
  MOV R4,#8         ;ÔO(sh¨¨)ÖÃP0¿Ú×óÒƴΔµ(sh¨´)
  MOV A,#0FEH       ;ÔO(sh¨¨)¶¨P0¿ÚµÄ³õʼֵ
LOOP1:            ;P2¿ÚÁ÷Ë®Ÿô³ÌÐò
  MOV P2,A
  Rr A
  CALL DELAY
  DJNZ R5,LOOP1
  MOV P2,#0FFH      ;êP(gu¨¡n)é]P2¿ÚµÄËùÓПô
  LJMP START        ;ÌøÖÁSTARTÌŽˆÌ(zh¨ª)ÐУ¬ËÀÑ­­h(hu¨¢n)
            ;ÑÓ•r(sh¨ª)×Ó³ÌÐò
 DELAY: MOV R7,0
     D1:MOV R6,0
     D2: MOV R1,0
     DJNZ R1,$
     DJNZ R6,D2
     DJNZ R7, D1
RET
END



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