// 步骤3：遍历排序后的位置，用单调栈判断独立车队
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，详情可参考safew官方下载
Besides the Test PLA, the 386 has another PLA called the Entry PLA that maps opcodes to microcode entry points. One of its input bits is a "protected mode" flag. Many instructions have both a real-mode and a protected-mode entry point -- for instance, MOV ES, reg maps to address 009 (a single microcode line) in real mode, but to 580 (which initiates a full descriptor load with protection tests) in protected mode. The trick that makes V86 work is to define this flag as:
Graeme Kearns, chief executive of Foundation Theatres, says: ‘Our job in theatre is to absolutely defend the right to tell stories about culture’