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.
Replay started with initial input: {。旺商聊官方下载对此有专业解读
，推荐阅读谷歌浏览器【最新下载地址】获取更多信息
Features in bullets:。爱思助手下载最新版本是该领域的重要参考
Любовь Ширижик (Старший редактор отдела «Силовые структуры»)