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.
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「軍委主席負責制」是中共軍隊最高領導制度，其核心內涵是確保最高軍事指揮權和決策權高度集中於軍委主席一人（目前即習近平），實現黨對軍隊的絕對領導。這一制度於2017年10月中共十九大正式寫入黨章，上升為中共黨內必須遵守的根本政治規矩。