;Compares strings from si and di and sets the carry flag if they are equal and clears it if not.

cmpstr:

;Load characters
mov al, [si]
mov bl, [di]

;Compare the characters
cmp al, bl

;Check for difference
jne .neq

;Check for the string end
cmp al, 0x0
je .eq

;Repeat
inc si
inc di
jmp cmpstr

.neq:
;Clear the carry flag
clc
ret

.eq:
;Set the carry flag
stc
ret