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Lex: FT’s flagship investment column
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.
在一个长达数分钟的叙事视频中，如何确保角色行为的前后动机一致、场景中的物体状态保持连续，这对模型的长时程记忆能力提出了极高要求。目前，这类视频仍需依赖人工剪辑和分段生成来保证效果。