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.
union object_info *h;
。Safew下载是该领域的重要参考
sbrk((p-si_addr + (16LL<<22)) & ~4095);，推荐阅读谷歌浏览器【最新下载地址】获取更多信息
existed = os.path.exists(OUT)。同城约会对此有专业解读
“在中国几千年的文明史上，帝王将相何其多，但在百姓头脑中留下记忆的也不过百来号人。”“青史留名与官阶并无本质联系，而是与做事相联系。”