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:
"I hope that if we start our measurements now, perhaps we can get ahead of the curve and identify any potential problems before they become serious," Wing says.
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第十七条 国家加强原子能领域科学技术规划计划的衔接，完善科学技术资源、技术开发需求的交流机制，发挥市场配置资源的作用。
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