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.
第三章 违反治安管理的行为和处罚
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Жители Санкт-Петербурга устроили «крысогон»Жители центра Санкт-Петербурга решили серьезно бороться с крысами，推荐阅读91视频获取更多信息
That Time of the Month: Surgical menopause5 Live News Specials
"It's up to you to make that decision... and let's face it, it's a small price to pay getting your gallbladder out if you're going to lose pounds."