<s>
MDSP	B-General_Concept
is	O
a	O
multiprocessor	B-Operating_System
DSP	B-Architecture
family	O
from	O
Cradle	O
Technologies	O
.	O
</s>
<s>
Currently	O
used	O
mostly	O
in	O
streaming	B-Application
video	I-Application
processing	O
in	O
broadcast	B-Operating_System
(	O
internet	O
and	O
terrestrial	O
)	O
and	O
video	O
surveillance	O
security	O
markets	O
.	O
</s>
<s>
It	O
is	O
a	O
loosely	O
coupled	O
architecture	O
that	O
employs	O
compute	O
and	O
Input/output	B-General_Concept
(	O
IO	O
)	O
subsystems	O
with	O
programmable	O
(	O
software	O
defined	O
)	O
IO	O
,	O
consisting	O
of	O
general	O
purpose	O
and	O
signal	O
processing	O
cores	O
.	O
</s>
<s>
The	O
general	O
purpose	O
cores	O
are	O
used	O
for	O
control	O
and	O
IO	O
processing	O
and	O
the	O
DSP	B-Architecture
cores	O
for	O
fixed	O
or	O
floating	B-Algorithm
point	I-Algorithm
computation	O
.	O
</s>
<s>
Cell	O
is	O
PowerPC	B-Architecture
based	O
.	O
</s>
<s>
The	O
PE	O
(	O
processing	O
element	O
)	O
or	O
GPP	O
(	O
General	O
purpose	O
processor	B-General_Concept
)	O
units	O
are	O
32	O
bit	O
general	O
purpose	O
RISC-like	O
cores	O
coupled	O
with	O
signal	O
processing	O
units	O
(	O
DSP	B-Architecture
or	O
DSE	O
)	O
via	O
a	O
databus	B-General_Concept
.	O
</s>
<s>
The	O
initial	O
software	B-Application
development	I-Application
kit	I-Application
(	O
sdk4	O
)	O
was	O
based	O
on	O
cygwin	B-Language
1.3.x	O
and	O
Cradles	O
umgcc	O
(	O
GCC	B-Application
port	O
)	O
.	O
</s>
<s>
Sdk5	O
is	O
based	O
on	O
Cygwin	B-Language
1.5.x	O
and	O
cragcc	O
(	O
gcc	B-Application
port	O
)	O
.	O
</s>
<s>
The	O
chips	O
are	O
programmed	O
in	O
a	O
mix	O
of	O
C	B-Language
and	O
CLASM	O
(	O
C	B-Language
like	O
assembly	B-Language
)	O
.	O
</s>
<s>
The	O
PEs	O
can	O
be	O
programmed	O
in	O
C	B-Language
,	O
the	O
DSEs	O
and	O
MTEs	O
are	O
programmed	O
in	O
CLASM	O
.	O
</s>
<s>
The	O
programmer	O
has	O
to	O
manage	O
resource	O
allocation	O
using	O
semaphores	B-Operating_System
,	O
paying	O
special	O
attention	O
to	O
keeping	O
all	O
DSP	B-Architecture
units	O
fed	O
with	O
instructions	O
.	O
</s>
