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.
While the route is not currently scheduled to open until after 2033 due to delays, archaeologists say their fieldwork is largely complete.
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Rebecca Morelle, Alison Francis and Greg BrosnanBBC Science，推荐阅读同城约会获取更多信息
For a while it seems as though it might be close, but Storrie's Ilya Rozanov-style Russian accent ultimately proves too much for Austin Johnson to handle.