Number to string

org 0x100
push 12345
call num_to_str
; Вывод полученной строки
while:
        pop ax
        cmp al, 0
        jz while_end
        mov ah, 0xE
        int 0x10
        jmp while
while_end:
; Символ следущей строки, не обязательно, Dos
; автоматически переводит курсор на новую строку
mov ax, 0xE00A
int 0x10
ret

num_to_str:
        mov [num_to_str_register_storage + 2], bp
        mov bp, sp
        mov [num_to_str_register_storage + 4], ax
        mov [num_to_str_register_storage + 6], cx
        mov [num_to_str_register_storage + 8], dx
        mov ax, [bp]
        mov [num_to_str_register_storage], ax
        mov ax, [bp + 2]
        add sp, 4
        push 0
        mov cx, 10
        num_to_str_while:
                mov dx, 0
                div cx
                add dl, '0'
                push dx
                cmp ax, 0
                jnz num_to_str_while
        push word[num_to_str_register_storage]
        mov bp, [num_to_str_register_storage + 2]
        mov ax, [num_to_str_register_storage + 4]
        mov cx, [num_to_str_register_storage + 6]
        mov dx, [num_to_str_register_storage + 8]
        ret
        num_to_str_register_storage resw 5