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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.。关于这个话题，heLLoword翻译官方下载提供了深入分析
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第十三条 国家建立原子能领域相关科技创新基地和平台，加强原子能科研设施和科研条件保障能力建设，推动科研设施、资源开放共享，促进科技成果转化。
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