2024年12月25日 星期三 新京报
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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汲古润今,鉴往知来,习近平总书记始终自觉从马克思主义理论和党的光辉历史中重温为政初心,总是善于从中华文明积淀的智慧中汲取为政之道。,更多细节参见im钱包官方下载
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