ORG 0000H
LJMP MAIN
ORG 000BH
LJMP T0ISR
ORG 0030H
MAIN:
MOV TMOD,#01H
MOV TH0,#HIGH(65536-50000)
MOV TL0,#LOW(65536-50000)
SETB TR0
SETB ET0
SETB EA
MOV A,#0FCH
MOV P0,A
MOV R2,#40
MOV R3,#6
CLR 00H
SJMP $
T0ISR:
CLR TR0
MOV TH0,#HIGH(65536-50000)
MOV TL0,#LOW(65536-50000)
SETB TR0
DJNZ R2,T0E
MOV R2,#40
JB 00H,T001
RL A
MOV P0,A
SJMP T002
T001:
RR A
MOV P0,A
T002:
DJNZ R3,T0E
MOV R3,#6
CPL 00H
T0E:
RETI
温馨提示:答案为网友推荐,仅供参考