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.
制作组早期对“国风星露谷”的回应。旺商聊官方下载对此有专业解读
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Андрей Шеньшаков
近日，IBM 高级副总裁 Rob Thomas 发布文章，回应外界围绕「AI 能否快速替代 COBOL 与大型机」的讨论。，详情可参考im钱包官方下载