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The 80386 introduced Virtual 8086 (V86) mode -- allowing real-mode DOS programs to run inside protected mode under OS supervision. While not full virtualization in the modern sense, V86 was the first practical hardware-assisted mechanism on x86 for running legacy software in a protected environment -- used widely in Windows 3.x and Windows 9x.
，这一点在爱思助手下载最新版本中也有详细论述
随着 Meta、Anthropic 等头部玩家开始熟练地在不同底层硬件上跑通多云架构，硬件迁移的生态壁垒正在被迅速瓦解。
Terminal applications have a “cursor” that they can move around, just like a text editor. You can tell that cursor “go to line 3, delete everything, then print out this new text” by using VT100 sequences. And you can use it to replace existing characters with new ones, without re-emitting a whole line.