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.
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full
，这一点在51吃瓜中也有详细论述
13:24, 27 февраля 2026Мир
ВсеСледствие и судКриминалПолиция и спецслужбыПреступная Россия
，这一点在搜狗输入法下载中也有详细论述
（三）自境外单位或者个人购进服务、无形资产或者境内不动产取得的完税凭证上列明的增值税税额；
The new API in action，更多细节参见Line官方版本下载