Documentation of Operating Systems and Developers

QNX

QNX is a real time operating system designed for critical tasks. Developed by QNX Software Systems it has a structure similar to UNIX and is compatible to POSIX. With an API Wrapper it supports software for Linux, the source code was opened by QNX partly. His strengths are the development of software, control of industrial roboters and embedded devices. By the real time ability of QNX the Neutrino Kernel allows with a pentium III the controlled reaction time (interrupt processing) of 0.55 µ sec in which events can be registered. For comparison purposes: Windows NT 4.0 and other time-sharing operating systems react to events only after approx. 10 ms. The GUI with the name photon was introduced for the first time in version QNX 4.x. Before the window manager was named "QNX Windows" and "X Windows". Among other things the reaction behaviour of the GUI was improved.

With the error tolerance, preemptive multitasking and the runtime memory protection it forms a stable base for many application purposes. Up till now the internet access with an ISDN card or a software modem is not supported yet. The simple user interface and low hardware requirements makes QNX interesting also for private use. For the private use QNX is free of charge usable and is ready for download on the QNX website. The also available QNX Moment Development Suite made it possible to develop applications for QNX.

QNX provided the Momentics Development Suite 2.2.0 with the operating system QNX Neutrino Kernel 6.3.0 for the evaluation on the website on June, 03. 2004. Till now, the new operating system can not downloaded separately. The use of the development software Momentics is restricted to a 30 day trial version. There also is a version for the installation of the Momentics IDE under Windows, Linux and Solaris. It contains a Clustering framework for the development of network based applications for transparent distributed processing. The software tools also were improved, Eclipse 2.1.2 and the GCC 3.3.1 are contained currently. QNX Neutrino supports now per default the representation of 3D pictures, multi-layer user interfaces and the view of the desktop on several monitors. The QNX Voyager Web browser supports SSL 3.0, HTML 4.01, XHTML 1.1, WAP 2.0, WML 1.3 and CSS now. This browser can scale and specify the website for small displays automatically. Now includet are the SCTP (stream control transmission Protocol), IP Filtering and NAT for networks.

The company QNX started to publish the source code of the QNX Neutrino Kernel over a Community portal of its own under a commercial licence in September 2007. Further components will follow that builds up on the QNX operating system. The release followed the source code for the implemented file systems FAT, EXT2, QNX4 and QNX6 as well as others in August 2008.

Field of application
- Embedded systems
- network area, internet client
- Development of applications with Photon Application Builder (PhAB)
- Engine control, Measuring data evaluation in real time
- Settop boxes

Structure information
- POSIX support
- Neutrino microkernel
- Protected memory areas
- preemptive multitasking
- Photon microGUI

System environment
- x86 processors, SMP up to 8 CPUs
- fs-QNX file system as image file on a FAT or own partition

QNX Demo Disk, boot screen	QNX Demo Disk, demo license	QNX Demo Disk, Voyager web browser	QNX Demo Disk, context menu and animation
QNX Demo Disk, file browser	6.0 - QNX Neutrino, setup screen of QNX under Windows	6.0 - After the installation the GUI lets itself be seen in remarkable colours and windows	6.0 - The menus for starting the programs are similar to these of Windows and BeOS
6.0 - The file manager shows the directory structure typical of a UNIX	6.0 - File menu in the Photon text program	6.0 - settigns for a dial up internet connection	6.2.1 - QNX, Desktop view with welcome message
6.2.1 - Software installer for QNX software	6.2.1 - Photon file manager, UNIX related file hierarchy	6.2.1 - Dialling process for Internet access	6.2.1 - Internet browser of QNX
6.2.1 - command line with root-directory and version	6.2.1 - The context menu for the configuration of the graphic device, network and others	6.3.0 - QNX, boot menu	6.3.0 - Setting of the graphics display
6.3.0 - Login screen	6.3.0 - program bar, Mozilla browser	6.3.0 - Photon file manager and console	6.3.0 - Quiet of the computer
QNX 6.3.2, Boot menu before installation	QNX 6.3.2, Login screen	QNX 6.3.2, Standard desktop	QNX 6.3.2, Description
QNX 6.3.2, Program menu	QNX 6.3.2, Momentics IDE 4.0.1	QNX 6.3.2, Photon File browser and Shell

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