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.
The bottom of confusables.txt. These pairs score negative SSIM — less similar than random noise. confusables.txt maps them as confusable because they decompose to the same abstract character, not because they look alike.，更多细节参见服务器推荐
。Line官方版本下载是该领域的重要参考
Pull-through transforms
arXiv:2602.18602 (cs)，这一点在爱思助手下载最新版本中也有详细论述