;---------------------------------------------------------------------
led1      EQU P1.0
led2      EQU P1.1
led3      EQU P1.2
led4      EQU P1.3

P13       EQU P1.3
;---------------------------------------------------------------------
;全局變量及位標志定義
FINT0     EQU 20H.1
FINT1     EQU 20H.2
FT0       EQU 20H.3
FT1       EQU 20H.4
FT2       EQU 20H.4

T0_10ms   EQU 30H
T0_50ms   EQU 31H
T0_100ms  EQU 32H


;---------------------------------------------------------------------
        ORG 0000H
        LJMP main

;---------------------------------------------------------------------
ORG 0003H
        ; FUNCTION int_0 (BEGIN)
        SETB    FINT0            ;有INT0中斷發生則標志置位
        RETI    
        ; FUNCTION int_0 (END)

;---------------------------------------------------------------------
ORG 000BH
        ; FUNCTION timer_0 (BEGIN)
        SETB    FT0
        RETI    
        ; FUNCTION timer_0 (END)

;---------------------------------------------------------------------
ORG 00013H
        ; FUNCTION int_1 (BEGIN)
        SETB    FINT1            ;有INT1中斷發生則標志置位 
        RETI    
        ; FUNCTION int_1 (END)
;---------------------------------------------------------------------
ORG 001BH
        ; FUNCTION timer_1 (BEGIN)
        SETB    FT1
        RETI    
        ; FUNCTION timer_1 (END)
        
;---------------------------------------------------------------------
ORG 0023H
        ; FUNCTION serial_1 (BEGIN)
        RETI    
        ; FUNCTION serial_1 (END)

;---------------------------------------------------------------------
ORG 002BH
        ; FUNCTION timer_2 (BEGIN)
        SETB    FT2
        RETI    
        ; FUNCTION timer_2 (END)
;---------------------------------------------------------------------


        ; FUNCTION main (BEGIN)
main:
        LCALL   initial
?C0001:
        CLR     P13
        JNB     FINT0,?C0003
        CLR     FINT0
        CLR     led1          ;有INT0中斷發生過則點亮
        CLR     led2
        CLR     led3
?C0003:
        JNB     FINT1,?C0004
        CLR     FINT1
        SETB    led1          ;有INT1中斷發生過則熄滅
        SETB    led2
        SETB    led3
?C0004:
        JNB     FT0,?C0001
        CLR     FT0
        INC     T0_10ms
        MOV     A,T0_10ms
        SETB    C
        SUBB    A,#01EH
        JC      ?C0001
        CLR     A
        MOV     T0_10ms,A
        SJMP    ?C0001
        ; FUNCTION main (END)
        

;---------------------------------------------------------------------
        ; FUNCTION initial (BEGIN)
initial:
        SETB    EA          ;CPU所有中斷開(IE最高位MSB)

        SETB    EX0         ;INT0中斷開 
        CLR     IT0         ;INT0低電平觸發(為1則為下降沿觸發)

        SETB    EX1         ;INT1中斷開 
        CLR     IT1         ;INT1低電平觸發(為1則為下降沿觸發)
        RET     
        ; FUNCTION initial (END)

END