CPU 8086

_start:
    push bp
    mov bp, sp
    mov si, [bp+8]
    push word [si]
    mov si, [bp+10]
    push word [si]
    call crc16
    mov di, [bp+6]
    mov [di], ax
    mov sp, bp
    pop bp
    retf 6

crc16:
	push	bp
	mov	bp, sp
	mov	bx, [bp+4]
    add [bp+6], bx
	mov	ax, -1
.L2:
	cmp	bx, [bp+6]
	jne	.L5
	pop	bp
	ret
.L5:
	mov	dl, [bx]
	mov	cl, 0x8
	shl	dx, cl
	xor ax, dx
	mov dl, cl
.L4:
	mov	cx, ax
	shl	cx, 1
	test ax, ax
	xchg	cx, ax
	jge	.L3
	xor	ax, 4129
.L3:
	dec	dl
	jne	.L4
	inc	bx
	jmp	.L2