<s>
SINIX	B-Operating_System
is	O
a	O
discontinued	O
variant	O
of	O
the	O
Unix	B-Application
operating	I-Application
system	I-Application
from	O
Siemens	O
Nixdorf	O
Informationssysteme	O
.	O
</s>
<s>
SINIX	B-Operating_System
supersedes	O
SIRM	O
OS	O
and	O
Pyramid	O
Technology	O
's	O
DC/OSx	B-Operating_System
.	O
</s>
<s>
Following	O
X/Open	O
'	O
s	O
acceptance	O
that	O
its	O
requirements	O
for	O
the	O
use	O
of	O
the	O
UNIX	B-Application
trademark	O
were	O
met	O
,	O
version	O
5.44	O
and	O
subsequent	O
releases	O
were	O
published	O
as	O
Reliant	B-Operating_System
UNIX	I-Operating_System
by	O
Fujitsu	O
Siemens	O
Computers	O
.	O
</s>
<s>
In	O
some	O
versions	O
of	O
SINIX	B-Operating_System
(	O
5.2x	O
)	O
the	O
user	O
could	O
emulate	O
the	O
behaviour	O
of	O
a	O
number	O
of	O
different	O
versions	O
of	O
Unix	B-Application
(	O
known	O
as	O
universes	O
)	O
.	O
</s>
<s>
These	O
included	O
System	O
V.3	O
,	O
System	B-Operating_System
III	I-Operating_System
or	O
BSD	B-Operating_System
.	O
</s>
<s>
Each	O
universe	B-Operating_System
had	O
its	O
own	O
command	O
set	O
,	O
libraries	B-Library
and	O
header	B-Language
files	I-Language
.	O
</s>
<s>
The	O
original	O
SINIX	B-Operating_System
was	O
a	O
modified	O
version	O
of	O
Xenix	B-Application
and	O
ran	O
on	O
Intel	B-Device
80186	I-Device
processors	O
.	O
</s>
<s>
For	O
some	O
years	O
Siemens	O
used	O
the	O
NSC-32x32	B-Device
(	O
up	O
to	O
Sinix	B-Operating_System
5.2x	O
)	O
and	O
Intel	B-General_Concept
80486	I-General_Concept
CPUs	O
(	O
Sinix	B-Operating_System
5.4x	O
-	O
non	O
MIPS	B-Device
)	O
in	O
their	O
MX-Series	O
.	O
</s>
<s>
Later	O
versions	O
of	O
SINIX	B-Operating_System
based	O
on	O
System	B-Operating_System
V	I-Operating_System
were	O
designed	O
for	O
the	O
:	O
</s>
<s>
The	O
last	O
release	O
under	O
the	O
SINIX	B-Operating_System
name	O
was	O
version	O
5.43	O
in	O
1995	O
.	O
</s>
<s>
The	O
last	O
Reliant	B-Operating_System
UNIX	I-Operating_System
versions	O
were	O
registered	O
as	O
UNIX	B-Application
95	O
compliant	O
(	O
XPG4	O
hard	O
branding	O
)	O
.	O
</s>
<s>
The	O
last	O
release	O
of	O
Reliant	B-Operating_System
UNIX	I-Operating_System
was	O
version	O
5.45	O
.	O
</s>
