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{{Short description|American software company}}
{{Infobox company
| name     = TenAsys Corporation
| logo     = TenAsys logo.svg
| type     = [[Private company|Private]]
| founded          = {{start date and age|2000}}
| location         = [[Hillsboro, Oregon]], US<br>{{Coord|45.531|-122.8814|region:US|format=dms|display=inline,title}}
| industry         = Embedded and Real-time Software
| products         = [[iRMX]], [[INtime]], and eVM
| revenue          =
| num_employees    =
| key_people       =
| operating_income =
| net_income       =
| homepage         = [http://www.tenasys.com/ www.tenasys.com]
}}
'''TenAsys''' (rhymes with ''tenacious'') is a privately owned company providing real-time software and services based on the [[x86 architecture|x86 Intel Architecture]] and [[Microsoft Windows]] operating system.
==History==
The company was founded in 2000 as a spin-off of [[RadiSys Corporation]] to exploit the RTOS technology based on the [[iRMX]] and [[INtime|INtime for Windows]] products originally developed by [[Intel|Intel Corporation]]. RadiSys acquired the iRMX and INtime RTOS technology when they purchased Intel's Multibus division in 1996.<ref>RadiSys to Acquire Multibus Business From Intel Corp., Intel to Take 17% Equity Stake in RadiSys [http://www.radisys.com/news_events/press_rel_page.cfm?pressreleasesid=73]</ref><ref>[http://retrotechnology.com/dri/intel_radisys.txt who owns Multibus? or older Intel product?]</ref><ref>{{Cite web|date=2010-03-22|title=TenAsys® Announces eVM™ for Windows® Embedded Virtualization Manager|url=https://www.eejournal.com/article/20100322-04/|access-date=2020-10-20|website=EEJournal|language=en-US}}</ref>
RadiSys released version 1.0 of the INtime RTOS in June, 1997.<ref>[http://www.radisys.com/news_events/press_rel_page.cfm?pressreleasesid=126 RadiSys Ships INtime to Customers Worldwide]</ref> The product was selected as one of two finalists in the EDN 1997 "Innovation of the Year" embedded development category.<ref>[http://www.edn.com/info/119985.html EDN 8th Annual Innovation Awards (1997) Winners and Finalists]</ref>
Effective 2000 iRMX III is supported, maintained, and licensed worldwide by TenAsys Corporation, under an exclusive licensing arrangement with Intel.
{{Expand section|date=April 2009}}
==Products==
[[File:TenAsys headquarters - Hillsboro, Oregon.JPG|thumb|Building that houses the company]]
TenAsys develops real-time operating system ([[RTOS]]) products designed to merge two separate computing platforms into one. Specifically, their products provide a means by which an RTOS can run in parallel with [[Windows]] on a standard PC platform. Their products are specific to the x86 Intel architecture.
===iRMX III===
[[iRMX]] is a [[real-time operating system]] designed specifically for use with the [[Intel 8080]] and [[Intel 8086]] family of processors. It is an acronym for ''Real-time Multitasking eXecutive''.  [[Intel]] developed iRMX in the late 1970s and originally released it in 1980 to support and create demand for their processors and Multibus system platforms.<ref>Real-time Elements, Donald J. Ewing, Professor Emeritus, Electrical Engineering and Computer Science University of Toledo, ''EECS 4170/5170/7170 Class Notes'' [http://www.eecs.utoledo.edu/~ewing/Real_Time/RTOS/RMX/IntelNotes/Chapter_1.pdf]</ref>
===iRMX for Windows===
[[iRMX|iRMX for Windows]] provides legacy support for existing applications based on the [[iRMX|iRMX III]] real-time operating system and the iRMX for Windows RTOS produced by [[Intel]] beginning in 1992.
The iRMX for Windows RTOS loads and runs on a standard Windows system. Upon initialization, it sets up a separate execution environment, takes over the CPU, and encapsulates Windows as the lowest priority iRMX task. The iRMX operating system [[Scheduling algorithm|scheduler]] then determines which tasks will run; whenever a real-time task is ready to run, it preempts Windows, handles all real-time activities, and then resumes Windows (the lowest priority iRMX task) after all real-time activities have completed.
===INtime RTOS for Windows===
Like iRMX for Windows, the INtime RTOS also installs on a standard Windows system. Once installed, the INtime RTOS schedules all [[hard real-time|real-time]] processes to run first, at a higher priority than Windows. The INtime RTOS runs as a separate, independent kernel outside of the Windows kernel, without modifying the Windows kernel, drivers, or applications.
Real-time processes run on the INtime kernel, and non-real-time processes run on Windows. Windows application threads communicate with their real time counterparts on the INtime kernel through a special API that facilitates coordination and data sharing.
===eVM Virtualization Platform for Windows===
The eVM virtualization platform provides a [[virtual machine]] that hosts real-time and embedded operating systems running alongside Microsoft Windows. The eVM platform requires [[x86 virtualization#Intel Virtualization Technology for x86 (Intel VT-x)|Intel virtualization technology]] (or Intel VT) in order to operate. The guest OS that runs within the VMM runs in parallel with Windows, on an industry-standard, PC-compatible, multi-core platform.<ref>{{Cite web|date=2010-03-22|title=TenAsys® Announces eVM™ for Windows® Embedded Virtualization Manager|url=https://www.eejournal.com/article/20100322-04/|access-date=2020-10-20|website=EEJournal|language=en-US}}</ref>
Legacy I/O can be emulated using Intel VT. Virtual communication channels, such as a virtual Ethernet or a virtual serial link, provide a means for embedded applications running on the VMM to coordinate with Windows applications.
Direct hardware (access to I/O) and deterministic timing (interrupt [[Latency (engineering)|latency]]) needs are addressed by giving the guest OS direct access to time-critical hardware. I/O is assigned exclusively to each guest OS so existing native device drivers have direct access to real hardware.
===Development Environment===
TenAsys RTOS tools are integrated into the Microsoft [[Visual studio|Visual Studio]] IDE.
==Notes==
{{reflist}}
==References==
*{{cite journal | author=Schwaderer, Curt | title=Real-time OS for multicore processors: Serious implications for AdvancedTCA systems | journal=CompactPCI & AdvancedTCA Systems |date=May 2006 | url=http://www.compactpci-systems.com/columns/software_corner/pdfs/2006,05.pdf}} (history and technology overview)
*{{cite journal |author1=Neumann, Dean |author2=Kulkarni, Dileep |author3=Kunze, Aaron |author4=Rogers, Gerald |author5=Verplanke, Edwin | title=Intel Virtualization Technology in Embedded and Communications Infrastructure Applications | journal=Intel Technology Journal |date=August 2006 |volume=10 |issue=3 |doi=10.1535/itj.1003.05 | url=http://download.intel.com/technology/itj/2006/v10i3/v10-i3-art05.pdf}} (application of virtualization to embedded systems)
*{{cite journal | author=Mick, Robert | title=Virtualization Technology Enables a Common Automation Platform | journal=ARC Brief |date=August 2006 | url=http://www.intel.com/platforms/applied/indpc/pdf/ARC-Intel-Virtualization-v1.pdf}} (impact of virtualization technology on manufacturing systems)
*{{cite journal | author=Shaum, Loren | title=When RTOS Really Is Needed | journal=Control Design |date=July 2007 | url=http://www.controldesign.com/articles/2007/147.html}} (application of an RTOS to machine-control)
*{{cite journal | author=Ciufo, Chris | title=Virtualization yields hardware optimization and new embedded architectures | journal=Military Embedded Systems |date=July 2008 | url=http://www.mil-embedded.com/articles/id/?3417}} (COTS virtualization software for military system applications)
==External links==
* [http://www.tenasys.com/ TenAsys homepage]
* [http://www.tenasys.com/support/documentation/irmx-documentation/ iRMX product page]
* [http://www.tenasys.com/intime INtime product page]
* [http://www.tenasys.com/evm eVM product page]
{{DEFAULTSORT:Tenasys}}
[[Category:Software companies based in Oregon]]
[[Category:Companies based in Hillsboro, Oregon]]
[[Category:Companies established in 2000]]
[[Category:Privately held companies based in Oregon]]
[[Category:2000 establishments in Oregon]]
[[Category:Software companies of the United States]]