fibonacci.asm

;Tristan Madden
;10/07/2017

.386
.model flat,stdcall
.stack 4096
ExitProcess proto,dwExitCode:dword

.data

    n WORD 6
    fibo WORD 1
    fiboPrev WORD 1
    temp WORD 1
    answer WORD 0

.code
main proc

    movzx ecx, n ;ecx needs to be (n-2)
    sub ecx, 2   ;ecx needs to be (n-2)

    mov ax, n

    .IF (ax <= 1)
        mov ax, n
        mov answer, ax
    .ENDIF

L1:

    ;int temp = fibo;
    mov bx, fibo
    mov temp, bx

    ;fibo += fiboPrev;
    mov ax, fiboPrev
    add fibo, ax

    ;fiboPrev = temp;
    mov fiboPrev, bx

loop L1

mov ax, fibo
mov answer, ax

invoke ExitProcess,0
main endp
end main