RT硬件和操作系统往往是定制的，难以理解。
RT hardware and operating systems are often customized and arcane.
如果拥有特定于硬件的定制驱动程序，那么可能需要恢复到默认设置或者尝试兼容的硬件支持。
If you have custom drivers specific to your hardware, you may need to revert to default Settings or try compatible hardware support.
在实践中，要使响应时间小于几十微秒，需要组合定制的软硬件，很可能没有(或者有非常薄的)操作系统层。
In practice, achieving response times below tens of microseconds requires a combination of custom hardware and software, possibly with no — or a very thin — operating-system layer.
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