秒表带清零带暂停.asm

是我在电子竞赛期间写的一些单片机汇编程序

ORG 0000H
AJMP MAIN

ORG 000BH		;定时器计数器0的定口地地址				
AJMP T0INT

ORG 0030H
MAIN:			;此程序的跑表部分由TO计数完成,计时部分由T1计数完成.
	MOV 30H,#00H
	MOV 31H,#00H
	MOV 32H,#00H

	MOV 50H,#00H
	
	MOV SP,#60H
	MOV TMOD,#01H	;定时器计数器1工作方式1,同时设置定时器T0为工作方式0
	MOV TH0,#0D8H
	MOV TL0,#0F0H

	SETB ET0
	SETB TR0		
	SETB EA	

CYCLE:
	MOV A,51H
	CJNE A,#00H,PP
	LCALL QLL
PP:
	LCALL INKEY
	LCALL SMXS
	AJMP CYCLE

T0INT:
	PUSH ACC
	CLR	TR0
	MOV	TH0,	#0D8H
	MOV	TL0,	#0F0H
	MOV	30H,	#00H
	INC	31H
	MOV	A,	31H
	DA	A
	MOV 	31H,A
	CJNE	A,#100H,EXIT1
	MOV 	31H,#00H
	INC	32H
	MOV	A,	32H
	DA	A
	MOV	32H,	A
	CJNE	A,#100H,EXIT1
	MOV	32H,	#00H	

EXIT1:
	SETB TR0
	POP ACC		
	RETI	
;-----------------------------------------------显示子程序---------------------------------------

SMXS:	
	MOV A,31H
	ANL A,#0FH
	ACALL TABLE
	MOV P2,A
	CLR P0.6
	ACALL DELAY
	SETB P0.6
	
	MOV A,31H
	SWAP A
	ANL A,#0FH
	ACALL TABLE
	MOV P2,A
	CLR P0.5
	ACALL DELAY
	SETB P0.5


	MOV A,32H
	ANL A,#0FH
	ACALL TABLE 
	MOV P2,A
	CLR P0.4
	ACALL DELAY
	SETB P0.4

	MOV A,32H
	SWAP A
	ANL A,#0FH
	ACALL TABLE
	MOV P2,A
	CLR P0.3
	ACALL DELAY
	SETB P0.3
	RET


TABLE:  INC     A	          
        MOVC    A,   @A+PC   
        RET
DB      0C0H,0F9H,0A4H,0B0H,099H,092H,082H,0F8H,80H,090H	;0-9的段码


INKEY:	
	MOV P3,#0FFH
	JB P3.3,NEXT1		;P3.3等于1则转移	
KK:	ACALL BUZZER
	JNB P3.3 ,KK
	INC 50H
	MOV A,50H
	CJNE A,#01H,KK22
	CLR TR0
	MOV 51H,#00H
	AJMP NEXT1
KK22:		
	CJNE A,#02H,NEXT1
	SETB TR0
	MOV 50H,#00H
	MOV 51H,#01H
NEXT1:
	RET


QLL:	
	MOV P3,#0FFH
	JB P3.5,NEXT2		;P3.3等于1则转移	
KK1:	ACALL BUZZER
	JNB P3.5 ,KK1 
	MOV 31H,#00H
	MOV 32H,#00H
NEXT2:
	RET


BUZZER:
	CLR P1.0
	ACALL DELAY
	SETB P1.0
	RET 	


DELAY:	MOV	55H,#10H
DELAY0:	MOV	54H,#50H
DELAY1:	DJNZ	54H,DELAY1
		DJNZ	55H,DELAY0
		RET

END