单片机控制的计数计时器

OV 43H,A
W2:JB P1.2,Q1
    ACALL D10
    JB P1.2,Q1
    ACALL D10
L3:JNB P1.2,L3
    CPL 00H
Q1:JB 00H,L0
    CLR TR0
    MOV A,30H
    CJNE A,#00H,X1
    MOV A,31H
    CJNE A,#00H,X1
    MOV P1,#0FDH
    AJMP X2
X1:MOV P1,#0FFH
    CLR P2.7
X2:JB P3.6,X3
    ACALL D10
    JB P3.6,X3
    ACALL D10
L2:JNB P3.6,L2
    MOV A,30H
    INC A
    DA A
    MOV 30H,A
    JC X4
X3:JB P3.7,X5
    ACALL D10
    JB P3.7,X5
    ACALL D10
L4:JNB P3.7,L4
X4:MOV A,30H
    ADD A,#0AH
    DA A
    MOV 30H,A
    JC X6
X5:JB P3.1,X7
    ACALL D10
    JB P3.1,X7
    ACALL D10
L5:JNB P3.1,L5
X6:MOV A,31H
    INC A
    DA A
    MOV 31H,A
    JC X6
X7:JB P3.0,W3
    ACALL D10
    JB P3.0,W3
    ACALL D10
L6:JNB P3.0,L6
MOV A,31H
    CLR C
    ADD A,#0AH
    DA A
    MOV 31H,A
    AJMP W3
TAB:DB C0H,F9H,A4H,B0H,
     DB 99H,92H,82H,F8H,
     DB 80H,6FH,
D10:MOV R5,#11H
LOOP1:MOV R4,#11H
LOOP2:NOP
      NOP
      DJNZ R4,LOOP2
      NOP
      NOP
      DJNZ R5,LOOP1
      RET
L0:SETB TR0
    AJMP W3
D0:MOV TH0,#3CH
    MOV TL0,#0B0H
    DJNZ R7,D3
    MOV R7,#14H
    MOV A,30H
    CJNE A,#00H,S0
    MOV A,31H
    CJNE A,#00H,S1
    AJMP D3
S1:DEC A
    MOV 31H,A
    MOV A,31H
    ANL A,#0FH
    CJNE A,#0FH,D4
    MOV A,31H
    ANL A,#0F0H
    ORL A,#09H
    MOV 31H,A
D4:MOV 30H,#99H
    AJMP D3
S0:DEC A
    MOV 30H,A
    MOV A,30H
    ANL A,#0FH
    CJNE A,#0FH,D3
    MOV A,30H
    ANL A,#0F0H
    ORL A,#09H
    MOV 30H,A
D3:MOV A,30H
    CJNE A,#00H,X0
    MOV A,31H
    CJNE A,#00H,X0
    MOV P1,#0FDH
    MOV P2,#0F8H
    CPL 00H
    CPL TR0
X0:CLR C
    RETI
D1:MOV TH1,#0ECH
&nb

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单片机控制的计数计时器(五)