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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。业内人士推荐夫子作为进阶阅读
To reassure some of you:
昨日，日本光学设备制造商适马正式宣布，计划于 2026 年 4 月 1 日成立子公司「适马会津农场（Sigma Aizu Farm）」，在会津地区启动以水稻栽培为核心的农业项目。
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