?? timer5.asm
字號(hào):
ORG 0000h
SJMP STRT
ORG 000Bh
SJMP TIMER0
ORG 001Bh
SJMP TIMER1
ORG 0030h
STRT: MOV TMOD,#03h
MOV TH0,#56d
MOV TL0,#06d
MOV TH1,#00h
MOV TL1,#00h
SETB EA
SETB ET0
SETB ET1
SETB TR0
SETB TR1
MOV A, TMOD
ANL A,#0Fh
ORL A,#10h
MOV TMOD,A
LOOP: MOV R0,TL1
MOV R1,TH1
CJNE R0,#20h,NEXT
NEXT: JC AHEAD
CJNE R1,#4Eh,NEXT1
NEXT1: JC AHEAD
MOV TH1,#00h
MOV TL1,#00h
CPL P1.2
AHEAD:
SJMP LOOP
TIMER0:
CLR TR0
CPL P1.0
MOV TL0,#06d
SETB TR0
RETI
TIMER1:
CLR TR1
CPL P1.1
MOV TH0,#56d
SETB TR1
RETI
END
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