<s>
MQX	B-Operating_System
(	O
Message	O
Queue	O
eXecutive	O
)	O
is	O
a	O
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
(	O
RTOS	B-Operating_System
)	O
developed	O
by	O
Precise	O
Software	O
Technologies	O
,	O
Inc.	O
,	O
and	O
currently	O
sold	O
by	O
Synopsys	O
,	O
Embedded	O
Access	O
,	O
Inc.	O
,	O
and	O
NXP	O
Semiconductors	O
.	O
</s>
<s>
Like	O
most	O
RTOSs	O
,	O
MQX	B-Operating_System
includes	O
a	O
multitasking	B-Operating_System
kernel	B-Operating_System
with	O
pre-emptive	O
scheduling	O
and	O
fast	O
interrupt	B-Application
response	O
,	O
extensive	O
inter-process	B-Operating_System
communication	I-Operating_System
and	O
synchronization	O
facilities	O
,	O
and	O
a	O
file	B-Application
system	I-Application
.	O
</s>
<s>
Its	O
configurable	O
size	O
conserves	O
computer	B-General_Concept
memory	I-General_Concept
space	O
using	O
a	O
minimum	O
of	O
6	O
KB	O
of	O
read-only	B-Device
memory	I-Device
(	O
ROM	B-Device
)	O
,	O
including	O
its	O
kernel	B-Operating_System
,	O
interrupts	B-Application
,	O
semaphores	O
,	O
queues	O
,	O
and	O
a	O
memory	O
manager	O
.	O
</s>
<s>
MQX	B-Operating_System
includes	O
an	O
Internet	B-Protocol
protocol	I-Protocol
suite	I-Protocol
TCP/IP	B-Protocol
stack	I-Protocol
(	O
RTCS	O
)	O
,	O
embedded	O
File	B-Application
Allocation	I-Application
Table	I-Application
based	O
DOS	B-Application
file	I-Application
system	I-Application
(	O
MFS	O
)	O
,	O
Universal	O
Serial	O
Bus	O
(	O
USB	B-Protocol
)	O
host/device	O
stack	O
,	O
and	O
design	O
,	O
debugging	O
(	O
task-aware	O
(	O
TAD	O
)	O
,	O
and	O
remote	O
)	O
,	O
and	O
performance	O
analysis	O
tools	O
.	O
</s>
<s>
It	O
is	O
supported	O
by	O
popular	O
libraries	B-Library
for	O
Secure	B-Protocol
Sockets	I-Protocol
Layer	I-Protocol
(	O
SSL	O
)	O
and	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
(	O
TLS	O
)	O
such	O
as	O
wolfSSL	B-Protocol
for	O
increased	O
security	O
measures	O
.	O
</s>
<s>
MQX	B-Operating_System
is	O
generally	O
used	O
in	O
embedded	B-Architecture
systems	I-Architecture
.	O
</s>
<s>
MQX	B-Operating_System
development	O
occurs	O
on	O
a	O
host	O
machine	O
running	O
Unix	B-Application
or	O
Windows	B-Application
,	O
and	O
cross-compiles	B-Application
target	O
software	O
to	O
run	O
on	O
various	O
target	O
central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
(	O
CPU	O
)	O
architectures	O
.	O
</s>
<s>
MQX	B-Operating_System
has	O
been	O
ported	O
to	O
many	O
platforms	O
and	O
now	O
runs	O
on	O
most	O
modern	O
CPUs	O
used	O
in	O
the	O
embedded	O
market	O
,	O
including	O
Kinetis	O
,	O
ColdFire	B-Device
,	O
PowerPC	B-Architecture
,	O
ARC	B-Application
,	O
ARM	B-Architecture
,	O
StrongARM	B-Device
,	O
xScale	B-Application
.	O
</s>
<s>
All	O
new	O
Kinetis	O
(	O
ARM	B-Architecture
Cortex-M4	O
)	O
,	O
i.MX	O
RT	O
(	O
ARM	B-Architecture
Cortex-M7	O
)	O
,	O
and	O
ColdFire	B-Device
devices	O
will	O
be	O
enabled	O
with	O
complimentary	O
Freescale	O
MQX	B-Operating_System
RTOS	B-Operating_System
.	O
</s>
<s>
Freescale	O
plans	O
to	O
expand	O
the	O
availability	O
of	O
this	O
complimentary	O
integrated	O
enablement	O
software	O
to	O
include	O
many	O
embedded	B-Architecture
processors	I-Architecture
in	O
its	O
broad	O
portfolio	O
.	O
</s>
<s>
MQX	B-Operating_System
had	O
its	O
origins	O
at	O
,	O
a	O
company	O
based	O
in	O
Ottawa	O
,	O
Canada	O
.	O
</s>
<s>
In	O
1984	O
,	O
a	O
small	O
team	O
of	O
software	O
engineers	O
there	O
,	O
consisting	O
of	O
Jeremy	O
James	O
,	O
Mati	O
Sauks	O
,	O
and	O
Craig	O
Honegger	O
started	O
researching	O
novel	O
applications	O
for	O
embedded	O
multiprocessors	B-Operating_System
.	O
</s>
<s>
This	O
work	O
led	O
to	O
the	O
use	O
of	O
a	O
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
in	O
writing	O
firmware	O
for	O
Dy4	O
single	O
board	O
computers	O
.	O
</s>
<s>
In	O
1989	O
,	O
James	O
and	O
Sauks	O
commercialized	O
the	O
Harmony	B-Operating_System
RTOS	B-Operating_System
,	O
with	O
the	O
name	O
MPX	O
,	O
which	O
was	O
developed	O
for	O
portable	O
multiprocessor	B-Operating_System
real-time	B-General_Concept
computing	I-General_Concept
systems	O
by	O
the	O
National	O
Research	O
Council	O
Canada	O
,	O
and	O
created	O
a	O
company	O
named	O
Precise	O
Software	O
Technologies	O
,	O
Inc	O
.	O
</s>
<s>
This	O
effort	O
led	O
to	O
developing	O
the	O
Precise	O
Real-Time	B-Operating_System
Executive	O
technology	O
that	O
was	O
the	O
basis	O
of	O
a	O
product	O
named	O
MQX	B-Operating_System
and	O
MQX+m	O
,	O
which	O
were	O
real-time	B-Operating_System
executives	O
for	O
single	O
processor	O
and	O
multiprocessor	B-Operating_System
applications	O
.	O
</s>
<s>
The	O
unique	O
asynchronous	O
message	O
passing	O
paradigm	O
delivered	O
by	O
MQX	B-Operating_System
when	O
it	O
was	O
introduced	O
in	O
1991	O
and	O
the	O
royalty-free	O
licensing	O
model	O
were	O
accepted	O
immediately	O
in	O
the	O
embedded	O
real-time	B-Operating_System
market	O
.	O
</s>
<s>
Since	O
the	O
introduction	O
of	O
MQX	B-Operating_System
,	O
Precise	O
continually	O
added	O
functions	O
to	O
the	O
MQX	B-Operating_System
RTOS69	O
through	O
its	O
various	O
iterations	O
and	O
versions	O
.	O
</s>
<s>
Precise	O
Software	O
Technologies	O
was	O
acquired	O
by	O
ARC	B-Application
International	O
in	O
March	O
,	O
2000	O
and	O
continued	O
to	O
develop	O
,	O
license	O
and	O
sell	O
MQX	B-Operating_System
on	O
many	O
new	O
processor	O
architectures	O
including	O
Freescale	B-Device
ColdFire	I-Device
,	O
IBM/Freescale	O
PowerPC	B-Architecture
and	O
ARM	B-Architecture
.	O
</s>
<s>
In	O
2004	O
,	O
Embedded	O
Access	O
assumed	O
distribution	O
and	O
support	O
of	O
the	O
MQX	B-Operating_System
RTOS	B-Operating_System
on	O
non-ARC	O
processor	O
architectures	O
.	O
</s>
<s>
In	O
2009	O
,	O
Freescale	O
began	O
shipping	O
the	O
MQX	B-Operating_System
RTOS	B-Operating_System
complimentary	O
with	O
selected	O
ColdFire	B-Device
MCUs	O
.	O
</s>
<s>
MQX	B-Operating_System
has	O
been	O
used	O
in	O
thousands	O
of	O
embedded	O
projects	O
by	O
over	O
1,000	O
companies	O
,	O
who	O
have	O
shipped	O
millions	O
of	O
products	O
running	O
it	O
.	O
</s>
<s>
Today	O
,	O
firms	O
such	O
as	O
ABB	O
,	O
Agilent	O
,	O
ATI	O
Technologies	O
,	O
Baoruh	O
Electronic	O
,	O
Bausch	O
and	O
Lomb	O
,	O
General	O
Dynamics	O
,	O
Daewoo	O
,	O
Exabyte	O
,	O
General	O
Electric	O
,	O
B.F.	O
Goodrich	O
,	O
Liebert	O
,	O
Matrox	O
,	O
Mitel	O
Networks	O
,	O
Philips	O
,	O
Porsche	O
,	O
QLogic	O
,	O
SICK	O
,	O
Sony	O
,	O
Tyco	O
,	O
and	O
Xerox	O
use	O
MQX	B-Operating_System
in	O
applications	O
such	O
as	O
industrial	O
control	O
,	O
networking	O
,	O
storage	O
,	O
and	O
consumer	O
electronics	O
.	O
</s>
