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Фото: Jamal Awad / Reuters
，这一点在旺商聊官方下载中也有详细论述
Intel documentation describes the 386's Protection Test Unit as a component that "implements fast testing of complex memory protection functions." It is mostly composed of a PLA (Programmable Logic Array), referred to as Test PLA by Intel, that is physically visible by its regular appearance on the die. This single piece of combinational logic replaces what would otherwise be dozens of multi-cycle conditional branches in the microcode. Instead of testing privilege rules sequentially, the microcode issues a single protection test operation, and the PLA evaluates all applicable rules in parallel, producing a complete decision in one evaluation: continue, fault, or redirect to a gate handler.
(There are other emergencies that could bring us to this point. One is a fire, which could result from machinery shorting. Another is a toxic ammonia leak. But these are even more unlikely.)
За год лечения, утверждает мужчина, ему удалось отказаться от вредной привычки. Теперь он помогает другим алкозависимым.