The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.
就在刚刚，据 The Information 报道，七个月前刚加入 Meta 的技术大牛庞若鸣（Ruoming Pang），在上周悄悄加入了 OpenAI。
Google AI Mode and the Future of Search。搜狗输入法2026对此有专业解读
Мерц резко сменил риторику во время встречи в Китае09:25
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