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.
《工业互联网和人工智能融合赋能行动方案》《“人工智能+制造”专项行动实施意见》发布，促进数字技术与实体经济全链条深度融合；《关于推进职业技能证书互通互认的通知》印发，破除技能人才流动壁垒，促进技能人才资源合理流动、有效配置……
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Вячеслав Агапов