;********定时器程序 **********************************
ORG 0000H
JMP MAIN
ORG 000BH
JMP TT0
ORG 001BH
JMP TT1
MOV SP,70H
MOV 20H,#10
; MOV 21H,#10
;=========================================
MAIN:
MOV TMOD,#01100000B
MOV TH1,#0F6H
MOV TL1,#0F6H
MOV IE,#10001010B
MOV TH0,#00H
MOV TL0,#00H
SETB TR0
SETB TR1
LOOP4: JMP LOOP4
;=========================================
TT1:; DJNZ 21H,LOOP2
MOV 21H,#10
CPL P1.3
RETI
;============================================
TT0: DJNZ 20H,LOOP1
MOV 20H,#10
MOV TH0,#00H
MOV TL0,#00H
CPL P1.4
LOOP1: RARE
;===========================================
END
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