The 386 microcode sequencer has a one-cycle pipeline delay: when a jump or RNI (run next instruction) is decoded, the micro-instruction immediately after it has already been fetched and will execute before the jump takes effect. This "delay slot" is a basic property of the sequencer, and the microcode is written to fill it with useful work rather than waste a cycle on a bubble. The examples in the PTSAV section above show this: at 582/5AE, the micro-instruction after LCALL executes before the subroutine begins.
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隐藏文件的展示策略也是影响用户感知的关键因素。macOS 默认不显示以点号开头的文件,而在 Windows 上,用户开启「显示隐藏文件」后即可看到 .DS_Store。但「显示隐藏文件」并不会展示 Desktop.ini,因为后者还被标记为「受保护的操作系统文件」,需要更深层级的设置才能取消隐藏。因此,如果用户经常在 macOS 与 Windows 间交换数据,对 .DS_Store 文件的感知还会更加强烈。
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