;In the Name of Allah
;Calculating the Difference Between the Value of Port A and the Value of Port B

.EQU PINA=0x19
.EQU DDRA=0x1A
;-----
.EQU PINB=0x16
.EQU DDRB=0x17
;-----
.EQU PORTC=0x15
.EQU DDRC=0x14
;-----

LDI R16,0X00
LDI R17,0XFF
OUT DDRA,R16
OUT DDRB,R16
OUT DDRC,R17

LOOP:
	IN R16,PINA
	IN R17,PINB
	SUB R16,17
	OUT PORTC,R16
	RJMP LOOP