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.
"He carries the load of home and family life. It still probably raises an eyebrow when he's called into a meeting and he says it has to be between 10am and 3pm. They'll be shocked that a man has said that," says Begg.,推荐阅读heLLoword翻译官方下载获取更多信息
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「我們常聽到有人說:『我跟人相處完全沒問題。』但後來他們才發現,自己其實不習慣與他人共享空間。」