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7 Apendix A: PC Architecture Information
Copyright © COM Express™ Extension
Specification Rev 013
22
The PC Handbook: For Engineers, Programmers, and Other Serious PC Users,
Sixth Edition, John P. Choisser and John O. Foster, Annabooks, 1997, ISBN 0-
929392-36-1
7.3 Ports
7.3.1 RS-232 Serial
EIA-232-E standard
The EIA-232-E standard specifies the interface between (for example) a modem
and a computer so that they can exchange data. The computer can then send data to
the modem, which then sends the data over a telephone line. The data that the
modem receives from the telephone line can then be sent to the computer. You can
search for information about the standard on the Web.
RS-232 Made Easy: Connecting Computers, Printers, Terminals, and Modems,
Martin D. Seyer, Prentice Hall, 1991, ISBN 0-13-749854-3
National Semiconductor
The Interface Data Book includes application notes. Type “232” as search criteria
to obtain a list of application notes. You can search for information about the data
book on National Semiconductor’s Web site.
7.3.2 Serial ATA
Serial AT Attachment (ATA) Working Group.
This X3T10 standard defines an integrated bus interface between disk drives and
host processors. It provides a common point of attachment for systems
manufacturers and the system. You can search for information about the working
group on the Web. We recommend you also search the Web for information on 4.2
I/O cable, if you use hard disks in a DMA3 or PIO4 mode.
7.3.3 USB
USB Specification.
USB Implementers Forum, Inc. is a non-profit corporation founded by the group
of companies that developed the Universal Serial Bus specification. The USB-IF
was formed to provide a support organization and forum for the advancement and
adoption of Universal Serial Bus technology. You can search for information
about the standard on the Web.