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analysis including:
，推荐阅读雷电模拟器官方版本下载获取更多信息
When VM=1, the protected-mode bit goes low and the Entry PLA selects real-mode entry points -- MOV ES, reg takes the one-line path. Meanwhile, CPL is hardwired to 3 whenever VM=1, so the V86 task always runs at the lowest privilege level, under full paging protection. The OS can use paging to virtualize the 8086's 1 MB address space, even simulating A20 address line wraparound by mapping pages to the same physical frames.
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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
Author(s): Aayush Trivedi, Jalaj Kumar, Mehdi Salem, Alankar Alankar
The same is done for your target point within its own cluster (finding paths from all its border points to your actual destination).。关于这个话题，服务器推荐提供了深入分析