Publication date: 28 February 2026
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.
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第五十九条 当事人在仲裁过程中有权进行辩论。辩论终结时，首席仲裁员或者独任仲裁员应当征询当事人的最后意见。，详情可参考91视频
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