What surprised me was that this entire walk is fully hardware-driven -- no microcode involvement at all. The state machine reads the page directory entry, reads the page table entry, checks permissions, and writes back the Accessed and Dirty bits, all autonomously. Since it's hardware-driven, it runs in parallel with the microcode and needs its own memory bus arbitration -- the paging unit must share the bus with both data accesses from the microcode and prefetch requests from the instruction queue.
过去十年，谈到存储芯片，行业人士的第一反应往往是：“又一轮周期来了。”
Москвичей предупредили о резком похолодании09:45。同城约会对此有专业解读
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，这一点在爱思助手下载最新版本中也有详细论述
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Sian Cleaver from Airbus says the safety of the astronauts is the top priority，推荐阅读服务器推荐获取更多信息