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Device Drivers Operating System Ppt

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It is both an OSI layer 1 (physical layer) and layer 2 (data link layer) device, as it provides physical access to a networking medium and provides a low-level addressing system Device Drivers can provide a level of security as they can run in kernel-mode, thereby protecting the operating system from applications running in user-mode. The hardware preempts the currently executing thread The driver’s ISR does the minimum amount of work necessary The softirq handler does the rest of the driver’s work The Linux e1000 Driver Embed Size (px) Start on Show related SlideShares at end WordPress Shortcode Link Device Drivers 11,342 views Share Like Download Suhas S R, Student Follow Published on Mar 15, 2009 Source

Questions….???? Device Drivers Modeling Device Driver Effects in Real-Time Schedulability Analysis: Study of a Network Driver By Lewandowski, M. Stanovich, M.J. Baker, T.P. The device interrupt is