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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.
。搜狗输入法2026对此有专业解读
override fun redact(`value`: KAccount): KAccount = //省略
Nature, Published online: 24 February 2026; doi:10.1038/d41586-026-00592-y
德國總理默茨（Friedrich Merz，梅爾茨）2月25至26日訪問中國。這是默茨去年5月上任後第一次訪華，也是繼法國總統馬克龍、愛爾蘭總理馬丁、芬蘭總理奧爾波和英國首相施紀賢之後，最近3個月內又一位訪問中國的歐洲國家領導人。