<s>
Intel	B-Device
Quark	I-Device
is	O
a	O
line	O
of	O
32-bit	O
x86	B-Operating_System
SoCs	O
and	O
microcontrollers	B-Architecture
by	O
Intel	O
,	O
designed	O
for	O
small	O
size	O
and	O
low	O
power	O
consumption	O
,	O
and	O
targeted	O
at	O
new	O
markets	O
including	O
wearable	B-Operating_System
devices	I-Operating_System
.	O
</s>
<s>
Quark	O
processors	O
,	O
while	O
slower	O
than	O
Atom	B-Device
processors	I-Device
,	O
are	O
much	O
smaller	O
and	O
consume	O
less	O
power	O
.	O
</s>
<s>
They	O
lack	O
support	O
for	O
SIMD	B-Device
instruction	B-General_Concept
sets	I-General_Concept
(	O
such	O
as	O
MMX	B-Architecture
and	O
SSE	B-General_Concept
)	O
and	O
only	O
support	O
embedded	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Quark	O
powers	O
the	O
(	O
now	O
discontinued	O
)	O
Intel	B-Device
Galileo	I-Device
developer	O
microcontroller	B-Architecture
board	O
.	O
</s>
<s>
In	O
2016	O
Arduino	O
released	O
the	O
Arduino	O
101	O
board	O
that	O
includes	O
an	O
Intel	B-Device
Quark	I-Device
SoC	B-Architecture
.	O
</s>
<s>
The	O
CPU	O
instruction	B-General_Concept
set	I-General_Concept
is	O
the	O
same	O
as	O
a	O
Pentium	B-General_Concept
(	O
P54C/i586	O
)	O
CPU	O
.	O
</s>
<s>
The	O
first	O
product	O
in	O
the	O
Quark	O
line	O
is	O
the	O
single-core	O
32	O
nm	O
X1000	O
SoC	B-Architecture
with	O
a	O
clock	O
rate	O
of	O
up	O
to	O
400MHz	O
.	O
</s>
<s>
The	O
system	O
includes	O
several	O
interfaces	O
,	O
including	O
PCI	O
Express	O
,	O
serial	B-Protocol
UART	O
,	O
I²C	O
,	O
Fast	B-Protocol
Ethernet	I-Protocol
,	O
USB	O
2.0	O
,	O
SDIO	O
,	O
power	O
management	O
controller	O
,	O
and	O
GPIO	B-Architecture
.	O
</s>
<s>
There	O
are	O
16kB	O
of	O
on-chip	O
embedded	O
SRAM	B-Architecture
and	O
an	O
integrated	O
DDR3	O
memory	B-General_Concept
controller	I-General_Concept
.	O
</s>
<s>
A	O
second	O
Intel	O
product	O
that	O
includes	O
Quark	O
core	O
,	O
the	O
Intel	B-Device
Edison	I-Device
microcomputer	O
,	O
was	O
presented	O
in	O
January	O
2014	O
.	O
</s>
<s>
It	O
has	O
a	O
form	O
factor	O
close	O
to	O
the	O
size	O
of	O
an	O
SD	B-Device
card	I-Device
,	O
and	O
is	O
capable	O
of	O
wireless	O
networking	O
using	O
Wi-Fi	O
or	O
Bluetooth	B-Protocol
.	O
</s>
<s>
In	O
January	O
2015	O
,	O
Intel	O
announced	O
the	O
sub-miniature	O
Intel	O
Curie	O
module	O
for	O
wearable	O
applications	O
,	O
based	O
on	O
a	O
Quark	O
SE	O
core	O
with	O
80kB	O
SRAM	B-Architecture
and	O
384kB	O
flash	B-Device
.	O
</s>
<s>
At	O
the	O
size	O
of	O
a	O
button	O
,	O
it	O
also	O
features	O
a	O
6-axis	O
accelerometer	O
,	O
a	O
DSP	O
sensor	O
hub	O
,	O
a	O
Bluetooth	B-General_Concept
LE	I-General_Concept
unit	O
and	O
a	O
battery	O
charge	O
controller	O
.	O
</s>
<s>
"	O
Lakemont	O
"	O
(	O
32nm	B-Algorithm
)	O
The	O
name	O
Lakemont	O
has	O
been	O
used	O
in	O
reference	O
to	O
the	O
processor	O
core	O
in	O
multiple	O
Quark-series	O
processors	O
.	O
</s>
<s>
Intel	B-Device
Quark	I-Device
SoC	B-Architecture
X1000	O
contains	O
a	O
bug	O
(	O
#71538	O
)	O
that	O
"	O
under	O
specific	O
circumstances	O
"	O
results	O
in	O
a	O
type	O
of	O
crash	O
known	O
as	O
a	O
segfault	B-Error_Name
.	O
</s>
<s>
The	O
workaround	O
implemented	O
by	O
Intel	O
is	O
to	O
omit	O
LOCK	B-Operating_System
prefixes	O
(	O
not	O
required	O
on	O
single-threaded	O
processors	O
)	O
in	O
the	O
compiled	O
code	O
.	O
</s>
<s>
While	O
source-based	O
embedded	O
systems	O
like	O
those	O
built	O
using	O
the	O
Yocto	B-Application
Project	I-Application
can	O
incorporate	O
this	O
workaround	O
at	O
compile	O
time	O
,	O
general	O
purpose	O
Linux	O
distributions	O
such	O
as	O
Debian	O
are	O
deeply	O
affected	O
by	O
the	O
bug	O
.	O
</s>
<s>
Such	O
a	O
workaround	O
is	O
not	O
easy	O
to	O
implement	O
in	O
binaries	O
meant	O
to	O
support	O
multithreading	B-General_Concept
too	O
as	O
they	O
require	O
LOCK	B-Operating_System
prefixes	O
to	O
function	O
properly	O
.	O
</s>
