Chapter 11: I - PowerPoint PPT Presentation


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2. I/O management and disk scheduling. We have already discussed I/O techniquesProgrammed I/OInterrupt-driven I/ODirect memory access (DMA)Also discussed of value of logical I/O where the OS hides most of the details of device I/O in system service routines. Then processes see devices in general terms such as read, write, open, close, lock, unlock.

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