For segments, the job is split between hardware and microcode. When LD_DESCRIPTOR fires its protection test at 5CD, the Test PLA OR's the A-bit (bit 8 of the descriptor high DWORD) into a temporary register called PROTUN. Then the microcode at PROT_TESTS_PASSED takes over and writes the modified value back to the GDT or LDT in memory:
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，更多细节参见雷电模拟器官方版本下载
说到底，没有商业闭环的开发之路，注定是脆弱且难以为继的。软件开发从来都不是孤立的技术创作，从产品研发、市场推广，到变现盈利、迭代优化，每一个环节都不可或缺，这恰恰是伊朗开发者最缺失的东西。
2. The Silent Killer of the Petroleum Reserves Under Our Feet