About RTEMS

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Welcome to the RTEMS home page!

RTEMS is the Real-Time Operating System for Multiprocessor Systems. It is a full featured RTOS that supports a variety of open API and interface standards. Major decisions about RTEMS are made by the Steering Committee, guided by the Mission Statement.

We encourage everyone to contribute changes and help testing RTEMS, and we provide access to our development sources with anonymous CVS and snapshots.

We strive to provide regular, high quality releases, which we want to work well on a wide range of embedded targets using cross development from a variety of hosts including GNU/Linux, FreeBSD, Cygwin, and Solaris.

Locations of visitors to this page

Current Training Dates

  • RTEMS Kick Start: August 25, 2008 in Huntsville, Alabama USA
  • Open Class: August 26-29, 2008 in Huntsville, Alabama USA
  • Open Class: October 6-9, 2008 in Munich, Germany
For more detailed information, see the RTEMS Training wiki page.

Release and Active Development

  • Mainline: will become 4.9 (obtain from CVS)
  • 4.8 Release Branch: RTEMS 4.8 (check out from CVS using the tag rtems-4-8-branch) (latest is 4.8.1)
  • 4.7 Release Branch: RTEMS 4.7 (check out from CVS using the tag rtems-4-7-branch) (latest is 4.7.2)
  • 4.6 Release Branch (CLOSED): RTEMS 4.6 (check out from CVS using the tag rtems-4-6-branch) (last WAS 4.6.6)

Featured Projects:

News/Announcements

  • 4.8.1 Released: (August 13, 2008) The RTEMS Project is pleased to release 4.8.1. This is the second release from the 4.8 release series and is primarily a bug fix release.
  • 4.7.3 Released: (August 8, 2008) On this numerically interesting date, 4.7.3 is released to the RTEMS Community. This is the fourth release from the 4.7 release series and is primarily a bug fix release.
  • Google Summer of Code Projects Announced (April 21, 2008):
RTEMS was fortunate enough to be included as Google Summer of Code project and received four student slots funded by Google. There were over three times as many student proposals as funded slots and all were good. In addition to the four funded student proposals, a few other students wanted to do the project anyway -- truly in the free software spirit. We want to thank Google as well as all the students and mentors involved in this effort. Details on the student projects are at RTEMS Summer Of Code Wiki page.
  • 4.8.0 Released (February 14, 2008): Happy Saint Valentine's Day!!! Today there were two RTEMS releases. The first of these is the long anticipated 4.8.0. 4.8.0 is the first release from the 4.8 release series and represents a long awaited step forward from the 4.8 releases. There have been many improvements to RTEMS itself including optional nanosecond timing granularity, smaller executables, a port to the Blackfin, and new POSIX services. The GNU/Linux RPMs have been updated and there are now MinGW hosted tools for MS-Windows users. On either hosts, users should be able to get started with RTEMS in a matter of minutes. For more details, see the 4.8.0 release information. Please note that if we forgot to include anyone's work in the release information, it is an accident. Please email and we will add the information.
  • 4.7.2 Released (February 14, 2008): The second Valentine's Day present to the RTEMS Community is the 4.7.2 release. This is the third release from the 4.7 release series and is primarily a bug fix release.
  • Older news and announcements...
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