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ORG 0000H MAIN: MOV R1, #07H MOV A, #01H NEXT: MOV P1, A ACALL DELAY RL A DJNZ R1,NEXT MOV R1,#07H NEXT1: MOV P1, A RR A ACALL DELAY DJNZ R1, NEXT1 SJMP MAIN DELAY: MOV R2, #20H MOV TMOD, #01H LOOP: MOV TH0,#3CH MOV TL0,#0B0H SETB TR0 WAIT: JNB TF0,WAIT CLR TF0 DJNZ R2,LOOP RET END
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