def _LDRB_immediate(cpu, reg_op, mem_op, mimm_op):
    """
        LDRB (immediate).

        :param reg_op: destination register.
        :param mem_op: memory.
        :param mimm_op: None or immediate.
        """
    cpu._ldr_str_immediate(reg_op, mem_op, mimm_op, ldr=True, size=8)
