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| LynxOS RTOS | |
|---|---|
| Developer | Lynx Software Technologies, Inc. |
| Written in | Ada,C,C++,Rust |
| OS family | Unix-likereal-time operating system |
| Working state | Current |
| Source model | Closed source |
| Initial release | 1986; 40 years ago (1986) |
| Latest release | 7.1[1] / February 20, 2020; 5 years ago (2020-02-20) |
| Marketing target | Embedded systems |
| Available in | English |
| Supported platforms | Motorola 68010,Intel 80386,ARM architecture,PowerPC |
| Kernel type | Monolithic, dynamic extendable |
| Default user interface | Command line interface |
| License | Proprietary |
| Official website | www |
TheLynxOS RTOS is aUnix-likereal-time operating system fromLynx Software Technologies (formerly "LynuxWorks"). Sometimes known as theLynx Operating System, LynxOS features fullPOSIX conformance and, more recently,Linux compatibility.[citation needed] LynxOS is mostly used in real-timeembedded systems, in applications foravionics,aerospace, the military,[2]industrial process control andtelecommunications.
The first versions of LynxOS were written in 1986 inDallas, Texas, by Mitchell Bunnell and targeted at a custom-builtMotorola 68010-based computer. The first platform LynxOS ran on was anAtari 1040ST with cross development done on an Integrated Solutions UNIX machine. In 1988-1989, LynxOS was ported to theIntel 80386 architecture. Around 1989,application binary interface (ABI) compatibility withUNIX System V.3 was added. Compatibility with other operating systems, including Linux,[citation needed] followed.
Full Memory Management Unit support has been included in thekernel since 1989, for the reliability of protected memory and the performance advantages of virtual addresses. ThePowerPC architecture is also supported, and in February 2015 Lynx announced planned support for theARM Cortex A-family.[3]
LynxOS components are designed for absolutedeterminism (hard real-time performance), which means that they respond within a known period of time. Predictable response times are ensured even in the presence of heavyinput/output (I/O) due to the kernel's uniquethreading model, which allowsinterrupt routines to be very short and fast.
Lynx holds an expired patent on the technology that LynxOS uses to maintain hard real-time performance.U.S. patent 5,469,571 was granted to Lynx November 21, 1995: "Operating System Architecture using Multiple Priority Light Weight kernel Task-based Interrupt Handling."
In 2003, Lynx introduced a specialized version of LynxOS named LynxOS-178, especially for use in avionics applications that require certification to industry standards such asDO-178B.
In late 2022, support for the programming languageRust was added to the certified toolchain for LynxOS-178 and LynxElement unikernel.[4]
TheUsenet newsgroupcomp.os.lynx is devoted to discussion of LynxOS.
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