Character mode device driver - PowerPoint PPT Presentation

Our ‘nic.c’ module

Our ‘nic.c’ module. We create a ‘character-mode’ device-driver for the 82573L NIC to use in futrure experiments. Character devices. The concept of a ‘character mode’ device is that it provides a ‘stream’ of data bytes which application-programs can access with these standard Linux system-calls:

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178 views • 16 slides

Multiplexing i/o

Multiplexing i/o. A look at some alternatives under Linux for dealing concurrently with multiple sources of device-input. What’s the problem?. Some applications need to process input from more than one peripheral device

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138 views • 12 slides

‘Identify Device’

‘Identify Device’. A mandatory command that allows device-drivers to query any standard IDE/ATA hard disk for its parameters. Uses PIO data-in protocol. Our ‘mbr.c’ driver-module reads sector 0 using a well-documented device protocol

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108 views • 7 slides

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