<s>
DRYOS	B-Operating_System
is	O
a	O
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
made	O
by	O
Canon	O
and	O
is	O
used	O
in	O
their	O
latest	O
digital	B-Device
cameras	I-Device
and	O
camcorders	O
.	O
</s>
<s>
Since	O
late	O
2007	O
,	O
DIGIC-based	O
cameras	O
are	O
shipped	O
using	O
DryOS	B-Operating_System
.	O
</s>
<s>
It	O
replaces	O
VxWorks	B-Operating_System
from	O
Wind	O
River	O
Systems	O
which	O
has	O
been	O
used	O
before	O
on	O
Digic2	O
(	O
DIGIC	B-General_Concept
II	O
)	O
and	O
some	O
Digic3	O
(	O
DIGIC	B-General_Concept
III	O
)	O
cameras	O
.	O
</s>
<s>
DryOS	B-Operating_System
had	O
existed	O
before	O
and	O
was	O
in	O
use	O
in	O
other	O
Canon	O
hardware	O
,	O
such	O
as	O
digital	O
video	O
cameras	O
and	O
high-end	O
webcams	O
.	O
</s>
<s>
DRYOS	B-Operating_System
has	O
a	O
16	O
kilobytes	O
kernel	B-Operating_System
module	O
at	O
its	O
core	O
and	O
is	O
currently	O
compatible	O
with	O
more	O
than	O
10	O
CPU	O
types	O
.	O
</s>
<s>
Canon	O
also	O
developed	O
a	O
USB	B-Protocol
-	O
and	O
middleware-compatible	O
device	O
driver	O
for	O
file	O
systems	O
and	O
network	O
devices	O
like	O
video	O
server	O
.	O
</s>
<s>
DRYOS	B-Operating_System
aims	O
to	O
be	O
compatible	O
with	O
µITRON	O
4.0	O
and	O
with	O
POSIX	O
.	O
</s>
<s>
The	O
following	O
cameras	O
are	O
known	O
to	O
run	O
DRYOS	B-Operating_System
:	O
</s>
