# INtime

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Real-time operating system

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Operating system

INtime RTOS / INtime for Windows Developer TenAsys Corporation OS family Real-time operating systems Working state Current Source model Closed Source Initial release 1997 (1997) Latest release 6.3 / July 2017 (2017-07) Marketing target Embedded systems Available in English, Japanese Supported platforms 80386 or higher Official website www.tenasys.com/intime

The **INtime** Real Time Operating System ([RTOS](/source/RTOS)) family is based on a 32-bit RTOS conceived to run time-critical operations cycle-times as low as 50μs. INtime RTOS runs on single-core, hyper-threaded, and multi-core x86 PC platforms from Intel and AMD. It supports two binary compatible usage configurations; INtime for Windows, where the INtime RTOS runs alongside Microsoft Windows®, and INtime Distributed RTOS, where INtime runs one.

Like its [iRMX](/source/IRMX) predecessors, INtime is a real-time operating system, and like DOSRMX and iRMX for Windows, it runs concurrently with a general-purpose operating system on a single hardware platform.

## History

### Initial Release

INtime 1.0 was originally introduced in 1997[1] in conjunction with the [Windows NT](/source/Windows_NT) operating system. Since then it has been upgraded to include support for all subsequent protected-mode [Microsoft Windows](/source/Microsoft_Windows) platforms, [Windows XP](/source/Windows_XP) to [Windows 10](/source/Windows_10).

INtime can also be used as a stand-alone RTOS. INtime binaries are able to run unchanged when running on a *stand-alone* node of the INtime RTOS. Unlike Windows, INtime can run on an [Intel 80386](/source/Intel_80386) or equivalent processor. Current versions of the Windows operating system generally require at least a [Pentium](/source/Pentium_compatible_processor) level processor in order to boot and execute.

### Version 2.2

After spinning off from [Radisys](/source/Radisys) in 2000[2] development work on INtime continued at [TenAsys Corporation](/source/TenAsys_Corporation). In 2003 TenAsys released version 2.2 of INtime.[3]

Notable features of version 2.2 include:

- Real-time Shared Libraries, or RSLs, which are the functional equivalent of the [Windows](/source/Windows) Dynamically Loaded Libraries, or [DLLs](/source/Dynamic-link_library).

- Support for the development of [USB](/source/USB) clients, and USB host control drivers for OHCI, UHCI and EHCI (USB 2.0) devices.

- A new timing acquisition and display application called ""INscope"" is released.

## Notes

1. **[^](#cite_ref-1)** ["RADISYS ships INtime to customers worldwide"](https://web.archive.org/web/20140222135306/http://www.thefreelibrary.com/RADISYS+ships+INtime+to+customers+worldwide.-a019609157). Archived from [the original](http://www.thefreelibrary.com/RADISYS+ships+INtime+to+customers+worldwide.-a019609157) on 2014-02-22. Retrieved 2014-02-05.

1. **[^](#cite_ref-2)** ["TenAsys Spins Off Real-Time Software Business from RadiSys Corporation"](https://web.archive.org/web/20140222135702/http://www.thefreelibrary.com/TenAsys+Spins+Off+Real-Time+Software+Business+from+RadiSys...-a062290008). Archived from [the original](http://www.thefreelibrary.com/TenAsys+Spins+Off+Real-Time+Software+Business+from+RadiSys...-a062290008) on 2014-02-22. Retrieved 2014-02-05.

1. **[^](#cite_ref-3)** [TenAsys Corporation Announces INtime® Version 2.2](http://www.tenasys.com/index.php/tenasys-information/press-releases/item/tenasys-corporation-announces-intimereg-version-22)

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Adapted from the Wikipedia article [INtime](https://en.wikipedia.org/wiki/INtime) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/INtime?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.