Data commit

Task/Fibonacci-sequence/8086-Assembly/fibonacci-sequence-1.8086

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+fib:
+; 	WRITTEN IN C WITH X86-64 CLANG 3.3 AND DOWNGRADED TO 16-BIT X86
+; 	INPUT: DI = THE NUMBER YOU WISH TO CALC THE FIBONACCI NUMBER FOR.
+;	OUTPUTS TO AX
+
+        push    BP
+        push    BX
+        push    AX
+        mov     BX, DI			;COPY INPUT TO BX
+        xor     AX, AX			;MOV AX,0
+        test    BX, BX			;SET FLAGS ACCORDING TO BX
+        je      LBB0_4			;IF BX == 0 RETURN 0
+        cmp     BX, 1			;IF BX == 1 RETURN 1
+        jne     LBB0_3
+        mov     AX, 1			;ELSE, SET AX = 1 AND RETURN
+        jmp     LBB0_4
+LBB0_3:
+        lea     DI, WORD PTR [BX - 1]   ;DI = BX - 1
+        call    fib			;RETURN FIB(BX-1)
+        mov     BP, AX			;STORE THIS IN BP
+        add     BX, -2
+        mov     DI, BX	
+        call    fib			;GET FIB(DI - 2)
+        add     AX, BP		        ;RETURN FIB(DI - 1) + FIB(DI - 2)
+LBB0_4:
+
+	add sp,2
+        pop     BX
+        pop     BP
+        ret

Task/Fibonacci-sequence/8086-Assembly/fibonacci-sequence-2.8086

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+getfib:
+;input: BX = the desired fibonacci number (in other words, the "n" in "F(n)")
+;       DS must point to the segment where the fibonacci table is stored
+;outputs to DX:AX (DX = high word, AX = low word)
+  push ds
+    cmp bx,41  ;bounds check
+    ja IndexOutOfBounds
+    shl bx,1
+    shl bx,1 ;multiply by 4, since this is a table of dwords
+    mov ax,@code
+    mov ds,ax
+    mov si,offset fib
+    mov ax,[ds:si]    ;fetch the low word into AX
+    mov dx,2[ds:si]   ;fetch the high word into DX
+  pop ds
+  ret
+
+
+IndexOutOfBounds:
+     stc             ;set carry to indicate an error
+     mov ax,0FFFFh   ;return FFFF as the error code
+   pop ds
+   ret
+
+;table of the first 41 fibonacci numbers
+fib dword 0, 1, 1, 2, 3, 5, 8, 13
+    dword 21, 34, 55, 89, 144, 233, 377, 610
+    dword 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657
+    dword 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269
+    dword 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986
+    dword 102334155