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P. 224
MOV P1,#C0H
MOV P2,#00H ;MC1 off
MOV R5,#18H ;3s
ACALL DELAY
;----------------------------
MOV SP,#07H
AJMP START
;----------------------------
DELAY: MOV R6,#FAH
DE1: MOV R7,#FAH
DE2: DJNZ R7,DE2
JNB P0.3,STOP
DJNZ R6,DE1
JNB P0.3,STOP
DJNZ R5,DELAY
JNB P0.3,STOP
RET
;----------------------------
STOP: AJMP BEGIN
;----------------------------
END
