; How string comparison works
;                   DI => scasb compares value stored in DI which is 's' with 's' stored in AX register
;                         and then increments DI if DF is 0
;                    v
; memory address 1: |s|n|a|t|0|       
; memory address 2: |s|n|a|k|e|0|     
;                    ^
;                   SI => lodsb loads value stored at SI to AX and then increments SI if DF is 0
os_compare_strings:	
	pusha

.compare:
	lodsb
	scasb			; Compare di to si
	jne .unequal		; If they are no equal, jump to .unequal
	cmp al, 0		; Check if string is finished
	je .equal		; If it has, return true
	jmp .compare		; Finally, repeat

.unequal:
	mov cl, 0		; Change to 0 if unquality is proven
	popa
	ret

.equal:
	mov cl, 1
	popa
	ret