The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.
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回首过去，我们在解决困扰中华民族几千年的绝对贫困问题上取得了伟大历史性成就。
대구 찾은 한동훈 “죽이 되든 밥이 되든 나설것” 재보선 출마 시사。爱思助手下载最新版本是该领域的重要参考