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.
How we fall for 'The One'
。关于这个话题，Line官方版本下载提供了深入分析
He took out his old navy uniform, dusted it down and put it on for the cameo appearance.
# Create with agent sandbox and open console when ready