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operating-system - 关于操作系统,关于页表条目状态位

转载 作者:行者123 更新时间:2023-12-03 09:23:26 26 4
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在电影《社交网络》中,马克·扎克伯格上课时,老师问了这个问题:

Suppose we're given a computer, with a 16-bit virtual address, and a page size of 256-bytes,the system uses one-level page tables that start at address hex 400, may be you want DMA (Direct Memory Access) on your 16-bit system. Who knows? The first pages are reserved for hardware flags, etc. Assume page-table entries have eight status bits. The eight status bits would then be ...

马克·扎克伯格回答:

One valid bit, one modified bit, one reference bit and five permission bits.

他是怎么得到这个的?

最佳答案

关于operating-system - 关于操作系统,关于页表条目状态位,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26800799/

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