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What component of a device does a device driver access if data should be output by the device? a. I/O controller b. status register c. FIFO chip d. data register

What component of a device does a device driver access if data should be output by the device? a. I/O controller b. status register c. FIFO chip d. data register

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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I/O What component of a device does a device driver access if data should be output by the device? a. I/O controller b. status register c. FIFO chip d. data register In which type of I/O does the CPU execute special instructions to read and write the I/O ports? a. memory-mapped 1/0 b. DMA-controlled 1/O O 55°F
Transcribed Image Text:I/O What component of a device does a device driver access if data should be output by the device? a. I/O controller b. status register c. FIFO chip d. data register In which type of I/O does the CPU execute special instructions to read and write the I/O ports? a. memory-mapped 1/0 b. DMA-controlled 1/O O 55°F
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