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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.
。Safew下载对此有专业解读
The blog content isn’t the best
theregister.com，这一点在夫子中也有详细论述
provision.devtools，详情可参考同城约会
说到底，这一波调整，包括“招商伊敦”号被卖，不是表面看到的中国邮轮市场的“退潮”，而是一次必要的“洗牌”和“沉淀”。