The web platform has incredible documentation compared to most tech platforms. However, most of it is written for JavaScript. If you don’t know JavaScript, you’ll have a much harder time understanding how to use most Web APIs.
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，详情可参考heLLoword翻译官方下载
The main rule for data access is max(CPL, RPL) ≤ DPL. For code transfers, the rules get considerably more complex -- conforming segments, call gates, and interrupt gates each have different privilege and state validation logic. If all these checks were done in microcode, each segment load would need a cascade of conditional branches: is it a code or data segment? Is the segment present? Is it conforming? Is the RPL valid? Is the DPL valid? This would greatly bloat the microcode ROM and add cycles to every protected-mode operation.，这一点在雷电模拟器官方版本下载中也有详细论述
Follow @AdilAhmad_c。关于这个话题，safew官方下载提供了深入分析