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PC Hardware in a Nutshell, 3rd Edition
book

PC Hardware in a Nutshell, 3rd Edition

by Robert Bruce Thompson, Barbara Fritchman Thompson
July 2003
Beginner to intermediate content levelBeginner to intermediate
874 pages
38h 13m
English
O'Reilly Media, Inc.
Content preview from PC Hardware in a Nutshell, 3rd Edition

Configuring COM Port Settings

Once you have installed and configured the serial port hardware, the next step is to configure the operating system to use it. Windows automatically recognizes proper IRQ and base address values for serial ports reported by the BIOS that use standard BIOS settings—COM1 and COM2 in this example. Depending on the BIOS, nonstandard COM port assignments are often detected, but the hardware settings may not be reported correctly. For example, when we installed COM3 on an older system using 0x3E8 and IRQ 10, Windows 95 detected COM3 on 0x3E8, but assumed that it used IRQ 4.

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Publisher Resources

ISBN: 059600513XErrata Page