<s>
The	O
LynxOS	B-Operating_System
RTOS	B-Operating_System
is	O
a	O
Unix-like	B-Operating_System
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
from	O
Lynx	B-Operating_System
Software	I-Operating_System
Technologies	I-Operating_System
(	O
formerly	O
"	O
LynuxWorks	B-Operating_System
"	O
)	O
.	O
</s>
<s>
Sometimes	O
known	O
as	O
the	O
Lynx	O
Operating	O
System	O
,	O
LynxOS	B-Operating_System
features	O
full	O
POSIX	O
conformance	O
and	O
,	O
more	O
recently	O
,	O
Linux	B-Application
compatibility	O
.	O
</s>
<s>
LynxOS	B-Operating_System
is	O
mostly	O
used	O
in	O
real-time	O
embedded	B-Architecture
systems	I-Architecture
,	O
in	O
applications	O
for	O
avionics	O
,	O
aerospace	O
,	O
the	O
military	O
,	O
industrial	O
process	O
control	O
and	O
telecommunications	O
.	O
</s>
<s>
As	O
such	O
,	O
it	O
is	O
compatible	O
with	O
military-grade	O
security	O
protocol	O
such	O
as	O
wolfSSL	B-Protocol
,	O
a	O
popular	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
(	O
TLS/SSL	B-Protocol
)	O
library	O
.	O
</s>
<s>
The	O
first	O
versions	O
of	O
LynxOS	B-Operating_System
were	O
written	O
in	O
1986	O
in	O
Dallas	O
,	O
Texas	O
,	O
by	O
Mitchell	O
Bunnell	O
and	O
targeted	O
at	O
a	O
custom-built	O
Motorola	O
68010-based	O
computer	O
.	O
</s>
<s>
The	O
first	O
platform	O
LynxOS	B-Operating_System
ran	O
on	O
was	O
an	O
Atari	B-Device
1040ST	I-Device
with	O
cross	O
development	O
done	O
on	O
an	O
Integrated	O
Solutions	O
UNIX	O
machine	O
.	O
</s>
<s>
In	O
1988-1989	O
,	O
LynxOS	B-Operating_System
was	O
ported	O
to	O
the	O
Intel	B-General_Concept
80386	I-General_Concept
architecture	O
.	O
</s>
<s>
Around	O
1989	O
,	O
application	B-Operating_System
binary	I-Operating_System
interface	I-Operating_System
(	O
ABI	O
)	O
compatibility	O
with	O
UNIX	O
System	O
V.3	O
was	O
added	O
.	O
</s>
<s>
Compatibility	O
with	O
other	O
operating	O
systems	O
,	O
including	O
Linux	B-Application
,	O
followed	O
.	O
</s>
<s>
Full	O
Memory	O
Management	O
Unit	O
support	O
has	O
been	O
included	O
in	O
the	O
kernel	B-Operating_System
since	O
1989	O
,	O
for	O
the	O
reliability	O
of	O
protected	O
memory	O
and	O
the	O
performance	O
advantages	O
of	O
virtual	O
addresses	O
.	O
</s>
<s>
The	O
PowerPC	B-Architecture
architecture	O
is	O
also	O
supported	O
,	O
and	O
in	O
February	O
2015	O
Lynx	O
announced	O
planned	O
support	O
for	O
the	O
ARM	B-Architecture
Cortex	O
A-family	O
.	O
</s>
<s>
LynxOS	B-Operating_System
components	O
are	O
designed	O
for	O
absolute	O
determinism	B-Application
(	O
hard	O
real-time	O
performance	O
)	O
,	O
which	O
means	O
that	O
they	O
respond	O
within	O
a	O
known	O
period	O
of	O
time	O
.	O
</s>
<s>
Predictable	O
response	O
times	O
are	O
ensured	O
even	O
in	O
the	O
presence	O
of	O
heavy	O
input/output	B-General_Concept
(	O
I/O	B-General_Concept
)	O
due	O
to	O
the	O
kernel	B-Operating_System
's	O
unique	O
threading	B-Operating_System
model	O
,	O
which	O
allows	O
interrupt	B-Application
routines	O
to	O
be	O
very	O
short	O
and	O
fast	O
.	O
</s>
<s>
Lynx	O
holds	O
an	O
expired	O
patent	O
on	O
the	O
technology	O
that	O
LynxOS	B-Operating_System
uses	O
to	O
maintain	O
hard	O
real-time	O
performance	O
.	O
</s>
<s>
was	O
granted	O
to	O
Lynx	O
November	O
21	O
,	O
1995	O
:	O
"	O
Operating	O
System	O
Architecture	O
using	O
Multiple	O
Priority	O
Light	O
Weight	O
kernel	B-Operating_System
Task-based	O
Interrupt	O
Handling.	O
"	O
</s>
<s>
In	O
2003	O
,	O
Lynx	O
introduced	O
a	O
specialized	O
version	O
of	O
LynxOS	B-Operating_System
named	O
LynxOS-178	O
,	O
especially	O
for	O
use	O
in	O
avionics	O
applications	O
that	O
require	O
certification	O
to	O
industry	O
standards	O
such	O
as	O
DO-178B	O
.	O
</s>
<s>
In	O
late	O
2022	O
,	O
support	O
for	O
the	O
programming	O
language	O
Rust	B-Application
was	O
added	O
to	O
the	O
certified	O
toolchain	O
for	O
LynxOS-178	O
and	O
LynxElement	O
unikernel	O
.	O
</s>
<s>
The	O
Usenet	B-Application
newsgroup	O
is	O
devoted	O
to	O
discussion	O
of	O
LynxOS	B-Operating_System
.	O
</s>
