;
ORG 0000H
SJMP START
ORG 000BH
MOV TH0, #(65536 - 50000) / 256
MOV TL0, #(65536 - 50000) MOD 256
CPL P2.0
RETI
START:
MOV TMOD, #01H
MOV TH0, #(65536 - 50000) / 256 ;定时50ms@12MHz
MOV TL0, #(65536 - 50000) MOD 256
SETB TR0
MOV IE, #82H
SJMP $
END
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