<s>
Phantom	B-Application
OS	I-Application
is	O
an	O
operating	B-General_Concept
system	I-General_Concept
(	O
OS	O
)	O
made	O
by	O
mostly	O
Russian	O
programmers	O
(	O
with	O
help	O
of	O
some	O
Uzbeks	O
)	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
a	O
concept	O
of	O
persistent	B-Library
virtual	B-Architecture
memory	I-Architecture
,	O
and	O
uses	O
a	O
virtual	B-Architecture
machine	I-Architecture
,	O
managed	O
code	O
,	O
and	O
bytecodes	O
.	O
</s>
<s>
It	O
is	O
one	O
of	O
a	O
few	O
OSes	O
not	O
based	O
on	O
classic	O
concepts	O
of	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Its	O
primary	O
goal	O
is	O
to	O
achieve	O
simplicity	O
and	O
effectiveness	O
in	O
both	O
the	O
operating	B-General_Concept
system	I-General_Concept
and	O
application	B-Application
software	I-Application
at	O
the	O
same	O
time	O
.	O
</s>
<s>
It	O
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
(	O
FOSS	B-License
)	O
released	O
under	O
a	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
(	O
LGPL	B-Application
)	O
.	O
</s>
<s>
Phantom	O
is	O
based	O
on	O
the	O
principle	O
that	O
"	O
Everything	O
is	O
an	O
object	O
"	O
,	O
in	O
contrast	O
to	O
the	O
Unix-like	B-Operating_System
approach	O
of	O
"	O
Everything	B-Application
is	I-Application
a	I-Application
file	I-Application
"	O
.	O
</s>
<s>
Managed	O
code	O
–	O
Memory	O
protection	O
on	O
object	O
level	O
,	O
rather	O
than	O
process	B-Operating_System
level	O
;	O
absence	O
of	O
pointer	O
arithmetic	O
in	O
managed	O
code	O
avoids	O
many	O
problems	O
that	O
exist	O
and	O
occur	O
in	O
unmanaged	O
code	O
.	O
</s>
<s>
Global	O
address	O
space	O
–	O
Very	O
effective	O
and	O
inexpensive	O
inter-process	B-Operating_System
communication	I-Operating_System
(	O
IPC	O
)	O
.	O
</s>
<s>
Single	O
(	O
flat	O
)	O
address	O
space	O
allows	O
transfer	O
of	O
objects	O
from	O
one	O
process	B-Operating_System
(	O
application	O
)	O
to	O
another	O
by	O
transferring	O
links	O
to	O
that	O
object	O
.	O
</s>
<s>
Differently	O
from	O
hibernation	O
that	O
is	O
done	O
in	O
other	O
OSs	O
,	O
persistence	O
lies	O
in	O
the	O
very	O
core	O
principles	O
of	O
the	O
Phantom	B-Application
OS	I-Application
core	O
.	O
</s>
<s>
Converter	O
from	O
Java	B-Language
virtual	I-Language
machine	I-Language
(	O
JVM	B-Language
)	O
bytecode	O
;	O
supposed	O
to	O
allow	O
import	O
of	O
bytecode	O
from	O
Java	B-Language
and	O
other	O
programming	O
languages	O
that	O
target	O
the	O
JVM	B-Language
.	O
</s>
<s>
The	O
Portable	O
Operating	B-General_Concept
System	I-General_Concept
Interface	O
(	O
POSIX	O
)	O
subsystem	O
allows	O
porting	O
application	O
code	O
from	O
Unix	B-Application
and	O
Linux	B-Application
,	O
although	O
important	O
features	O
of	O
Phantom	B-Application
OS	I-Application
become	O
unavailable	O
.	O
</s>
<s>
,	O
the	O
system	O
exists	O
in	O
alpha	O
version	O
for	O
x86	B-Operating_System
IA-32	B-Device
processors	O
.	O
</s>
<s>
Porting	O
to	O
ARM	B-Architecture
architecture	I-Architecture
is	O
underway	O
(	O
currently	O
being	O
tested	O
,	O
not	O
yet	O
ready	O
for	O
use	O
)	O
and	O
porting	O
to	O
MIPS	B-Device
and	O
x86-64	B-Device
(	O
AMD64	B-Device
)	O
has	O
begun	O
.	O
</s>
