// A minimal writer implementation — just an object with methods
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.
。同城约会是该领域的重要参考
Source: Computational Materials Science, Volume 266
Welsh actress Eve Myles is set to star in a crime drama inspired by the true story of a detective who solved the cold case murder of a 17-year-old girl in the 1980s.