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Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

About This Guide

The System Architecture guide accompanies the QNX Neutrino realtime OS and is intended for both application developers and end-users.

The guide describes the philosophy of QNX Neutrino and the architecture used to robustly implement the OS. It covers message-passing services, followed by the details of the microkernel, the process manager, resource managers, the Photon microGUI, and other aspects of QNX Neutrino.

Note: Note that certain features of the OS as described in this guide may still be under development for a given release.

For the latest news and information on any QNX product, visit our website (www.qnx.com). You'll find links to many useful areas -- software downloads, featured articles by developers, newsgroups, technical support options, and more.

The following table may help you find information quickly:

To find out about: Go to:
OS design goals; message-passing IPC The Philosophy of QNX Neutrino
System services The QNX Neutrino Microkernel
System event monitoring The Instrumented Microkernel
Working on a system with more than one processor Multicore Processing
Memory management, pathname management, etc. Process Manager
Shared objects Dynamic Linking
Device drivers Resource Managers
Image, RAM, QNX 4, DOS, CD-ROM, Flash, NFS, CIFS, Ext2 filesystems Filesystems
Serial and parallel devices Character I/O
Network subsystem Networking Architecture
Native QNX Neutrino networking Native Networking (Qnet)
TCP/IP implementation TCP/IP Networking
Fault recovery High Availability
Power-aware systems Power Management
Sharing resources among competing processes Adaptive Partitioning
Graphical environment The Photon microGUI
Terms used in QNX documentation Glossary

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