calculate fabonacci series of numbers in assembly code

fabonacci.asm

.data
num dw 8       ; Variable to store the number of Fibonacci sequence terms
sum dw 0       ; Variable to store the sum of Fibonacci sequence terms
res dw 0       ; Variable to store the result of the Fibonacci sequence

.code
main proc 
        mov ax, 0               ; Initialize first Fibonacci term to 0
        mov bx, 1               ; Initialize second Fibonacci term to 1
        
        mov cx, num             ; Load the number of Fibonacci terms into cx register
        
        fabonacci_calculate:
            add sum, bx          ; Add the current Fibonacci term to the sum
            mov ax, bx          ; Move the value of bx (current term) to ax
            mov bx, sum         ; Move the sum to bx to get the next Fibonacci term
        
            loop fabonacci_calculate  ; Loop until cx becomes zero, decrementing cx each time
         
        ; Store the result in the variable 'res'
        mov res, ax  

        ; Your code should end with 'ret' or 'int 20h' or similar
        ret
end proc   
main endp