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07:23, 28 февраля 2026Бывший СССР
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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.
换言之，模型能力是水，但缺乏将水引向农田的高效管道流量与场景的入口。在上半场，引流权始终掌握在手机操作系统与超级App手中，而在下半场，硬件，被重估控制水源的终极闸门。