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.
; → PLA result takes effect NOW
，这一点在safew官方下载中也有详细论述
to 1-allocation code. Still better than having append do all the
携程官方数据显示，过去一年在平台辐射范围内市场新增超过5万个就业岗位，其中超半数位于二线及以下城市——这一细微数据的变化，正是这种“变中守常”的最佳注脚。
Владимир Джабаровпервый зампредседателя комитета Совфеда по международным делам