Model křižovatky

	ORG 0
	
	MOV R2,#0FFH	
	MOV R5,#0FFH	
	SJMP MIMO		

FAZE1:	MOV P1,#09BH	
	MOV P3,#076H	
	CALL ZPOZ		
	
PRECH1:	MOV P1,#0A9H	
	MOV P3,#0A5H	
	CALL ZPOZ2		

FAZE2:	MOV P1,#076H	
	MOV P3,#09BH	
	CALL ZPOZ		

PRECH2:	MOV P1,#0A5H	
	MOV P3,#0A9H	
	CALL ZPOZ2		
		
DJNZ R6,FAZE1			
	SJMP MIMO		

ZPOZ:	DJNZ R2,C1		
	MOV R2,#0FFH	
	RET				
C1:	MOV R1,#0FFH	
C2:	DJNZ R1,C3		
	SJMP ZPOZ		
C3:	MOV R0,#01FH	
C4:	DJNZ R0,C4		
	SJMP C2			

ZPOZ2:	DJNZ R5,C11		
	MOV R5,#0FFH	
	RET				
C11:	MOV R4,#01FH	
C22:	DJNZ R4,C33		
	SJMP ZPOZ2		
C33:	MOV R3,#07FH	
C44:	DJNZ R3,C44		
	SJMP C22		

MIMO:	MOV R6,#4D		
O:	MOV P1,#0FFH	
	MOV P3,#0FFH	
	CALL ZPOZM		
	MOV P1,#0EDH	
	MOV P3,#0EDH	
	CALL ZPOZM		
	DJNZ R6,O		
	MOV R6,#4D		
	SJMP FAZE1		

ZPOZM:	MOV R4,#00FH	
	MOV R3,#07FH	

CZZ:	DJNZ R5,C1Z		
	MOV R5,#0FFH	
	MOV R4,#01FH	
	RET				

C1Z:	MOV R4,#00FH	
C2Z:	DJNZ R4,C3Z		
	SJMP CZZ		

C3Z:	MOV R3,#07FH	
C4Z:	DJNZ R3,C4Z		
	SJMP C2Z		

	END