据《大河报》等媒体报道，近日，一名男子深夜驾驶领克Z20汽车在高速公路行驶时，用语音控制要求系统关闭车内阅读灯，却触发车机误操作，导致车辆远近光灯全部熄灭，车前一片漆黑，最终车辆撞上护栏，所幸并未造成人员伤亡。
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The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.