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Serial HOWTO
David S.Lawyer dave@lafn.org original by Greg Hankins
v2.27 December 2008This document describes the UART serial port features other than those which should be covered by Modem-HOWTO, PPP-HOWTO, Serial-Programming-HOWTO, or Text-Terminal-HOWTO. It lists info on multiport serial cards. It contains technical info about the serial port itself in more detail than found in the above HOWTOs and should be best for troubleshooting when the problem is the serial port itself. If you are dealing with a Modem, PPP (used for Internet access on a phone line), or a Text-Terminal, those HOWTOs should be consulted first. It's also useful as an introduction to how the serial port works before reading other documents on how to program it.
1.
Introduction
2.
Quick Help
3.
How the Hardware Transfers Bytes
4.
Serial Port Basics
5.
Is the Serial Port Obsolete?
6.
Multiport Serial Boards/Cards/Adapters
7.
Servers for Serial Ports
8.
Configuring Overview
9.
Locating the Serial Port: IO address, IRQs
10.
Configuring the Serial Driver (high-level) "stty"
11.
Serial Port Devices /dev/tts/2 = /dev/ttyS2, etc.
12.
Interesting Programs You Should Know About
13.
Speed (Flow Rate)
14.
Locking Out Others
15.
Serial Communications Programs And Utilities
16.
Serial Tips And Miscellany
17.
Troubleshooting
18.
Interrupt Problem Details
19.
What Are UARTs? How Do They Affect Performance?
20.
Pinout and Signals
21.
Voltage Waveshapes
22.
Other Serial Devices (not async RS-232)
23.
Other Sources of Information
24.
Appendix A: Obsolete Hardware/Software
* License
