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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:。旺商聊官方下载是该领域的重要参考
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You are contagious and can spread chickenpox to other people from two days before the first spots develop until they have all formed scabs, which is usually five days after they first appear.