ORG 	0000H					
LJMP 	START
ORG 	0003H
RETI
ORG 	000BH					
LJMP 	INTT0
ORG 	0013H
RETI
ORG 	001BH					
LJMP 	INTT1 
ORG 	0023H
RETI
ORG 	002BH
RETI
START:							
MOV 	R0, #70H
MOV 	R7, #0BH
MOV 	20H, #00H
CLEARDISP: 
MOV 	@R0, #00H
INC 		R0
DJNZ 	R7,CLEARDISP
MOV 	7AH,#0AH
MOV 	TMOD,#11H
MOV 	TL0, #0B0H
MOV 	TH0, #3CH
MOV 	TL1, #0B0H
MOV 	TH1, #3CH
SETB 	EA							
SETB 	ET0							
SETB 	TR0
MOV 	R4,#14H
START1: 
LCALL 	DISPLAY
JNB 		P3.2,SETMM1
SJMP 	START1
SETMM1: 
LJMP 	SETMM						 
INTT0: 
PUSH 	ACC
PUSH 	PSW
CLR 	ET0
CLR 	TR0
MOV 	A,#0B7H 						
ADD 	A,TL0
MOV 	TL0,A
MOV 	A,#3CH
ADD 	A,TH0
MOV 	TH0,A
SETB 	TR0
DJNZ 	R4, OUTT0
ADDSS: 
MOV 	R4,#14H
MOV 	R0,#71H
ACALL 	ADD1						
MOV 	A,R3
CLR 	C
CJNE 	A,#60H,ADDMM
ADDMM: 
JC 		OUTT0
ACALL 	CLR0						
MOV 	R0,#77H
ACALL 	ADD1
MOV 	A,R3
CLR 	C							
CJNE 	A,#60H,ADDHH
ADDHH:
JC 		OUTT0
ACALL 	CLR0
MOV 	R0,#79H
ACALL 	ADD1						
MOV 	A,R3
CLR 	C							
CJNE 	A,#24H,HOUR
HOUR:
JC 		OUTT0
ACALL 	CLR0						
OUTT0: 
MOV 	72H,76H
MOV 	73H,77H
MOV 	74H,78H
MOV 	75H,79H
POP 		PSW
POP 		ACC
SETB 	ET0
RETI
INTT1: 								
PUSH 	ACC
PUSH 	PSW
MOV 	TL1, #0B0H
MOV 	TH1, #3CH
DJNZ 	R2,INTT1OUT
MOV 	R2,#06H
CPL 		02H
JB 		02H,FLASH1
MOV 	72H,76H
MOV 	73H,77H
MOV 	74H,78H
MOV 	75H,79H
INTT1OUT: 							
POP 		PSW						
POP 		ACC
RETI
FLASH1: 
JB 		01H,FLASH2
MOV 	72H,7AH
MOV 	73H,7AH
MOV 	74H,78H
MOV 	75H,79H
AJMP 	INTT1OUT					 
FLASH2: 
MOV 	72H,76H
MOV 	73H,77H
MOV 	74H,7AH
MOV 	75H,7AH
AJMP 	INTT1OUT
ADD1: 								
MOV 	A,@R0
DEC 	R0
SWAP 	A
ORL 	A,@R0
ADD 	A,#01H
DA 		A							
MOV 	R3,A
ANL 	A,#0FH
MOV 	@R0,A
MOV 	A,R3
INC 		R0							
SWAP 	A
ANL 	A,#0FH
MOV 	@R0,A
RET
CLR0:								
CLR 	A
MOV	@R0,A
DEC 	R0
MOV 	@R0,A
RET
SETMM: 								
CLR ET0 
CLR 	TR0							
LCALL 	DL1S
JB 		P3.2,CLOSEDIS 
MOV 	R2,#06H
SETB 	ET1							
SETB 	TR1							
SET2: 
JNB 		P3.2,SET1
SETB 	00H
SET4: 
JB 		P3.2,SET3
LCALL 	DL05S
JNB 		P3.2,SETHH
MOV 	R0,#77H 						
LCALL 	ADD1
MOV 	A,R3
CLR 	C
CJNE 	A,#60H,HHH
HHH: 
JC 		SET4
LCALL 	CLR0
CLR 	C							
AJMP 	SET4
CLOSEDIS: 
SETB 	ET0							
SETB 	TR0							
CLOSE: 
JB 		P3.2,CLOSE
LCALL 	DISPLAY						
JB 		P3.2,CLOSE
WAITH: 
JNB 		P3.2,WAITH
LJMP 	START1
SETHH: 
CLR 	00H
SETHH1: 
JNB 		P3.2,SET5
SETB 	01H
SET6: 
JB 		P3.2,SET7
LCALL 	DL05S					
JNB 		P3.2,SETOUT
MOV 	R0,#79H
LCALL 	ADD1
MOV 	A,R3
CLR 	C						
CJNE 	A,#24H,HOUU
HOUU: 
JC 		SET6
LCALL 	CLR0					
AJMP 	SET6
SETOUT: 
JNB 		P3.2,SETOUT1
LCALL 	DISPLAY					
JNB 		P3.2,SETOUT
CLR 	01H
CLR 	00H
CLR 	02H
CLR 	TR1						
CLR 	ET1						
SETB 	TR0
SETB 	ET0
LJMP 	START1
SET1: 
LCALL 	DISPLAY					
AJMP 	SET2
SET3: 
LCALL 	DISPLAY
AJMP 	SET4
SET5: 
LCALL 	DISPLAY					
AJMP 	SETHH1
SET7: 
LCALL 	DISPLAY
AJMP 	SET6
SETOUT1: 
LCALL 	DISPLAY
AJMP 	SETOUT
DISPLAY: 							
MOV 	R1,#70H
MOV 	R5,#0BFH
PLAY: 
MOV 	A,R5
MOV 	P2,A
MOV 	A,@R1
MOV 	DPTR,#TAB					
MOVC 	A,@A+DPTR					
MOV 	P0,A
LCALL 	DL1MS
INC 		R1
MOV 	A,R5
JNB 		ACC.1,ENDOUT				
RR 		A
MOV 	R5,A
AJMP 	PLAY
ENDOUT: 
SETB 	P2.1
MOV 	P0,#0FFH
RET
TAB:
DB 	28H,7EHH,0A2H,62H,74H,61H,21H,7AH,20H,60H
DL1MS:								
MOV 	R6,#14H
DL1: 
MOV 	R7,#19H
DL2: 
DJNZ 	R7,DL2
DJNZ 	R6,DL1
RET
DS20MS: 								
ACALL 	DISPLAY						
ACALL 	DISPLAY
ACALL 	DISPLAY
RET
DL1S: 								
LCALL 	DL05S
LCALL 	DL05S
RET
DL05S: 								
MOV 	R3,#20H
DL05S1: 
LCALL 	DISPLAY						
DJNZ 	R3,DL05S1
RET
END