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.
Wordle today: Answer, hints for February 27, 2026
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（一）未经批准，安装、使用电网的，或者安装、使用电网不符合安全规定的；
这套说辞在法律上也许站得住脚，但它同时也揭示了一件事：这家公司从未认为自己做错了什么，只是某些手段不够干净。