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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英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊
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pixels checkpoint list mybox，这一点在爱思助手下载最新版本中也有详细论述
信任幼儿园，也信任孩子：老师是伙伴，不是「托管员」；孩子比我们想象中更有韧性。