<s>
DSPnano	O
is	O
an	O
embedded	O
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
(	O
RTOS	B-Operating_System
)	O
which	O
is	O
compatible	O
with	O
POSIX	O
and	O
embedded	B-Application
Linux	I-Application
.	O
</s>
<s>
It	O
was	O
first	O
created	O
in	O
1996	O
and	O
was	O
one	O
of	O
the	O
first	O
pthread	B-Operating_System
based	O
real-time	O
kernels	O
.	O
</s>
<s>
Its	O
entire	O
focus	O
was	O
on	O
tiny	O
real-time	O
digital	B-General_Concept
signal	I-General_Concept
processing	I-General_Concept
systems	O
and	O
has	O
been	O
optimized	O
to	O
deliver	O
high	O
performance	O
DSP	B-General_Concept
on	O
embedded	O
digital	B-General_Concept
signal	I-General_Concept
controllers	I-General_Concept
and	O
digital	B-Architecture
signal	I-Architecture
processors	I-Architecture
.	O
</s>
<s>
A	O
full	O
complement	O
of	O
I/O	O
is	O
included	O
as	O
is	O
a	O
full	O
complement	O
of	O
DSP	B-General_Concept
optimized	O
features	O
including	O
:	O
DSP	B-General_Concept
libraries	O
,	O
fix	O
size	O
buffer	O
management	O
,	O
software	O
pipelines	O
and	O
more	O
.	O
</s>
<s>
It	O
has	O
also	O
been	O
moved	O
to	O
FPGA	B-Architecture
platforms	O
to	O
accelerate	O
DSP	B-General_Concept
applications	O
.	O
</s>
<s>
Typical	O
processors	O
that	O
DSPnano	O
runs	O
on	O
today	O
include	O
:	O
Microchip	B-Architecture
PIC	I-Architecture
microcontroller	O
(	O
24	O
,	O
30	O
,	O
33	O
and	O
32	O
)	O
,	O
Renesas	O
M16C	O
,	O
ARM	B-Architecture
and	O
more	O
.	O
</s>
<s>
While	O
RoweBots	O
claims	O
that	O
DSPnano	O
is	O
an	O
open	B-Application
source	I-Application
product	O
,	O
its	O
license	O
is	O
not	O
certified	O
by	O
the	O
Open	B-Application
Source	I-Application
Initiative	O
and	O
the	O
license	O
agreement	O
explicitly	O
prohibits	O
redistribution	O
of	O
the	O
source	O
code	O
.	O
</s>
<s>
It	O
is	O
currently	O
proprietarily	B-Application
licensed	I-Application
as	O
a	O
result	O
of	O
this	O
.	O
</s>
