闪烁灯.asm

基于Proteus的51系列单片机设计与仿真

      ORG  0030H
      MOV  A,#0FFH
      MOV  P1,A
      MOV  P0,A
 MAIN:JB   P1.0,LOOP1
      CPL  P0.0
      CPL  P0.7
      LCALL DELAY
      SJMP NEXT
LOOP1:JB  P1.1,LOOP2
      MOV  P0,#00H
      LCALL DELAY
      LCALL DELAY
      MOV  P0,#0FFH
      LCALL DELAY
      LCALL DELAY
      SJMP NEXT
LOOP2:MOV  P0,#00H
 NEXT:SJMP MAIN
DELAY:MOV  R7,#10
DE1:  MOV  R6,#200
DE2:  MOV  R5,#248
      DJNZ R5,$
      DJNZ R6,DE2
      DJNZ R7,DE1
      RET
      END