<s>
The	O
ST200	B-General_Concept
is	O
a	O
family	O
of	O
very	B-General_Concept
long	I-General_Concept
instruction	I-General_Concept
word	I-General_Concept
(	O
VLIW	B-General_Concept
)	O
processor	O
cores	O
based	O
on	O
technology	O
jointly	O
developed	O
by	O
Hewlett-Packard	O
Laboratories	O
and	O
STMicroelectronics	O
under	O
the	O
name	O
Lx	O
.	O
</s>
<s>
The	O
main	O
application	O
of	O
the	O
ST200	B-General_Concept
family	I-General_Concept
is	O
embedded	O
media	O
processing	O
.	O
</s>
<s>
The	O
Lx	O
architecture	O
is	O
closer	O
to	O
the	O
original	O
VLIW	B-General_Concept
architecture	O
defined	O
by	O
the	O
Trace	O
processor	O
series	O
from	O
Multiflow	O
than	O
to	O
the	O
EPIC	B-General_Concept
architectures	I-General_Concept
exemplified	O
by	O
the	O
IA-64	B-General_Concept
.	O
</s>
<s>
The	O
ST200	B-General_Concept
VLIW	B-General_Concept
family	O
currently	O
comprises	O
the	O
ST210	O
,	O
ST220	O
,	O
ST231	B-General_Concept
cores	O
,	O
which	O
are	O
single-cluster	O
implementations	O
of	O
the	O
Lx	O
architecture	O
.	O
</s>
<s>
The	O
ST231	B-General_Concept
improved	O
the	O
ST220	O
architecture	O
with	O
register	O
scoreboarding	O
and	O
32-bit	O
x	O
32-bit	O
multiplies	O
for	O
integer	O
and	O
fractional	O
data	O
representations	O
.	O
</s>
<s>
A	O
MMU	B-General_Concept
was	O
also	O
added	O
so	O
the	O
ST231	B-General_Concept
can	O
be	O
used	O
as	O
a	O
host	O
processor	O
.	O
</s>
<s>
In	O
digital	O
video	O
,	O
STM	O
reported	O
in	O
2009	O
that	O
it	O
had	O
shipped	O
over	O
40	O
million	O
systems-on-chip	B-Architecture
(	O
SoCs	O
)	O
containing	O
a	O
VLIW	B-General_Concept
processor	O
from	O
the	O
ST200	B-General_Concept
family	I-General_Concept
.	O
</s>
<s>
Since	O
many	O
of	O
these	O
SoCs	O
contain	O
multiple	O
ST200s	B-General_Concept
(	O
the	O
STi7200	O
contains	O
four	O
ST231s	B-General_Concept
)	O
,	O
they	O
actually	O
shipped	O
in	O
excess	O
of	O
70	O
million	O
of	O
these	O
VLIW	B-General_Concept
processors	O
.	O
</s>
<s>
The	O
first	O
ST210	O
compiler	O
was	O
the	O
HP	O
Lx	O
compiler	O
developed	O
at	O
HP	O
Labs	O
Cambridge	O
,	O
itself	O
a	O
descendant	O
of	O
the	O
Multiflow	O
Trace	B-Application
scheduling	I-Application
compiler	O
and	O
heavily	O
modified	O
by	O
HP	O
to	O
target	O
the	O
embedded	O
domain	O
.	O
</s>
<s>
Starting	O
with	O
the	O
ST220	O
,	O
STMicroelectronics	O
introduced	O
compilers	O
based	O
on	O
the	O
Open64	B-Application
technology	O
.	O
</s>
<s>
In	O
these	O
compilers	O
,	O
the	O
Open64	B-Application
release	O
has	O
been	O
improved	O
by	O
upgrading	O
its	O
GCC	B-Application
C	O
and	O
C++	O
front-end	O
from	O
2.96	O
to	O
3.x	O
and	O
later	O
4.x	O
,	O
in	O
order	O
to	O
achieve	O
full	O
C++	O
compliance	O
.	O
</s>
<s>
The	O
GNU	B-Application
C	I-Application
extensions	O
have	O
been	O
fully	O
implemented	O
in	O
the	O
Open64	B-Application
,	O
including	O
the	O
asm	O
statements	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
can	O
be	O
compiled	O
for	O
the	O
ST200	B-General_Concept
.	O
</s>
<s>
The	O
other	O
ST200	B-General_Concept
compilation	O
tools	O
are	O
straightforward	O
ports	O
of	O
GNU	O
as	O
,	O
GNU	O
ld	O
,	O
and	O
GDB	B-Language
.	O
</s>
