Does it make sense to define I/O subsystems that use a combination of memory mapping and command

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Does it make sense to define I/O subsystems that use a combination of memory mapping and command driven communication? Explain your answer.


Communicating with I/O devices is achieved using combinations of polling, interrupt handling, memory mapping, and special I/O commands. Answer the questions about communicating with I/O subsystems for the following applications using combinations of these techniques.a. b. Auto Pilot Automated Thermostat

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Computer Organization And Design The Hardware Software Interface

ISBN: 9780123747501

4th Revised Edition

Authors: David A. Patterson, John L. Hennessy

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