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.
Copyright © 1997-2026 by www.people.com.cn all rights reserved
。业内人士推荐51吃瓜作为进阶阅读
"A heavy hailstorm" was falling and "there was lightning" when the plane went down," a woman whose car was struck by the aircraft wreckage told the AFP news agency.。业内人士推荐快连下载-Letsvpn下载作为进阶阅读
Израиль нанес удар по Ирану09:28。谷歌浏览器【最新下载地址】是该领域的重要参考