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LDI R24, 0x20
LDI R25, 0x30
LDI R16, 0xFF	;255 used for logic
LDI R17, 0		;0 used for logic
LDI R18, 0		;Counting Register
LDI R19, 0x01	;Increment number
LDI R20, 0x10	;Overflow Value
OUT DDRE, R24
OUT PORTE, R25
OUT DDRA, R17	;PA in input mode
OUT PORTA, R16	;enable pull-up for PA
OUT DDRD, R16	; PD in output mode
OUT PORTD, R16	; Turn off all LEDs

Main:
Call Output

UpdateSound:
sbis pina, 5
ldi R22, 21
sbis pina, 5
ldi R23, 199
sbis pina, 6
ldi R22, 11
sbis pina, 6
ldi R23, 99
sbis pina, 7
ldi R22, 42
sbis pina, 7
ldi R23, 142


CHECK_INCREMENT:
	SBIC PINA, 4
	RJMP CHECK_DECREMENT
	CALL Increment
		LatchI:
			CALL LDelay
			SBIC PINA, 4
			RJMP CHECK_DECREMENT
			RJMP LatchI

CHECK_DECREMENT:
	SBIC PINA, 3
	RJMP StopWatch
	Decrement:
		cp R18,R17
		BREQ LOOP_TO_15;
		SUB R18,R19
		LatchD:
			CALL LDelay
			SBIC PINA, 3
			RJMP StopWatch
			RJMP LatchD

StopWatch:
	SBIC PINE, 6
	RJMP Main
	Loop:
		CALL Timer
		CALL Increment
		CALL Output
		SBIC PINE, 6
		RJMP Main
		RJMP Loop

RJMP Main


LOOP_TO_0:
	LDI R18, 0
	Call Sound
done:RJMP Stopwatch

LOOP_TO_15:
	LDI R18, 15
	Call Sound
	RJMP LatchD

Sound:
sbi ddre, 4
ldi r25, 80
soundloop:
		sbi porte, 4
        call sound1
        cbi porte, 4
        call sound1
        dec r25
        brne soundloop
		rjmp done
sound1: mov R26, R22
		mov R27, R23
L1:     dec  r27
        brne L1
        dec  r26
        brne L1
        ret

Increment:
	ADD R18, R19
	cp R18,R20
	BREQ LOOP_TO_0;
	RET


Timer:
	LDI R25,255
	L_outer1:
		LDI R26, 255
		L_middle1:
			LDI R27, 25
			L_inner1:
				DEC R27
				BRNE L_inner1
			DEC R26
			BRNE L_middle1
		DEC R25
		BRNE L_outer1
		RET

LDelay:
	LDI R25, 25
	L_outer:
		LDI R26, 25
		L_middle:
			LDI R27, 25
			L_inner:
				DEC R27
				BRNE L_inner
			DEC R26
			BRNE L_middle
		DEC R25
		BRNE L_outer
		RET

Output:
	LDI R21, 0
	ADD R21, R18
	LDI R30, 0
	LDI R28, 4	;Loop 4 times
		Loop1:
			CLC
			ROR R21
			ROL R30
			DEC R28
			BRNE Loop1
	COM R30	;Output needs to be complemented, output is active low
	OUT PORTD, R30	;Outputs the answer to the LEDs
	RET