output is not what was expected FASM BootLoader org 0x7c00

Question

output is not what was expected FASM BootLoader org 0x7c00

use16 
 
org 0x7c00
 
    message db "Hello!"
    len equ $ - message
 
BootLoader:
    cli
    xor ax, ax
    mov ds, ax
    mov es, ax
    mov ss, ax
    mov sp, 0xFFFF
    sti

    mov ax, 0002h
    int 10h

    mov bx, 0
    mov dx, 1
    
    mov cx, len

print_loop:

    mov ah, 0x0E
    mov al, [message + bx]
    
    int 10h
    
    inc bx
    cmp bx, len
    
    jl print_loop

    jmp $

times 510-($-$$) db 0 
dw 0xAA55

Using Bochs 2.7 I expected the text "Hello!"