def dump_section(bank_number, separator="\n\n"):
    """
    Returns a str of a section header for the asm file.
    """
    output = "SECTION \""
    if bank_number in [0, "0"]:
        output += "bank0\",HOME"
    else:
        output += "bank"
        output += bank_number
        output += "\",DATA,BANK[$"
        output += bank_number
        output += "]"
    output += separator
    return output