<s>
EWS-UX	B-Operating_System
is	O
a	O
Unix	B-Application
operating	I-Application
system	I-Application
used	O
by	O
NEC	O
Corporation	O
for	O
its	O
EWS-4800	O
line	O
of	O
engineering	O
workstations	B-Device
.	O
</s>
<s>
EWS-UX	B-Operating_System
is	O
based	O
largely	O
on	O
versions	O
of	O
Unix	B-Operating_System
System	I-Operating_System
V	I-Operating_System
supplemented	O
with	O
BSD	B-Operating_System
software	O
.	O
</s>
<s>
EWS-UX	B-Operating_System
and	O
the	O
EWS-4800	O
line	O
of	O
workstations	B-Device
were	O
widely	O
used	O
for	O
CAD	B-Application
/	O
CAM	O
work	O
.	O
</s>
<s>
Early	O
versions	O
of	O
EWS-UX	B-Operating_System
run	O
on	O
Motorola	B-Device
68000	I-Device
series	O
CISC	B-Architecture
processors	I-Architecture
,	O
while	O
later	O
versions	O
run	O
on	O
MIPS	B-Device
RISC	B-Architecture
processors	I-Architecture
.	O
</s>
<s>
NEC	O
attempted	O
to	O
introduce	O
binary	B-General_Concept
compatibility	I-General_Concept
between	O
Unix	B-Application
versions	O
used	O
by	O
DEC	O
,	O
Sony	O
(	O
NEWS-OS	B-Operating_System
)	O
,	O
and	O
Sumitomo	O
's	O
Unix	B-Application
(	O
SEIUX	O
)	O
.	O
</s>
<s>
However	O
,	O
DEC	O
dropped	O
out	O
of	O
the	O
agreement	O
to	O
pursue	O
the	O
DEC	B-Device
Alpha	I-Device
architecture	O
.	O
</s>
<s>
EWS-UX	B-Operating_System
and	O
UP-UX	O
(	O
NEC	O
's	O
Unix	B-Application
server	B-General_Concept
OS	I-General_Concept
)	O
became	O
integrated	O
and	O
merged	O
into	O
UX/4800	O
.	O
</s>
<s>
EWS-UX	B-Operating_System
/	O
V	O
:	O
Based	O
on	O
Unix	B-Application
SVR2	O
.	O
</s>
<s>
It	O
runs	O
on	O
the	O
EWS4800	O
series	O
equipped	O
with	O
the	O
MC68020	B-Device
,	O
MC68030	B-Device
,	O
and	O
MC68040	B-Device
processors	O
.	O
</s>
<s>
EWS-UX	B-Operating_System
/	O
V	O
(	O
Rel4.0	O
)	O
:	O
Based	O
on	O
Unix	B-Application
SVR4	O
.	O
</s>
<s>
It	O
runs	O
on	O
the	O
EWS4800	O
series	O
equipped	O
with	O
R3000	B-Device
(	O
VR3600	O
)	O
and	O
R4000	B-General_Concept
processors	O
.	O
</s>
<s>
EWS-UX	B-Operating_System
/	O
V	O
(	O
Rel4.2	O
)	O
:	O
Based	O
on	O
Unix	B-Application
SVR4.2	O
.	O
</s>
<s>
It	O
supports	O
processors	O
such	O
as	O
the	O
R4400	B-General_Concept
,	O
VR4200	O
,	O
and	O
R4600	B-Device
.	O
</s>
<s>
EWS-UX	B-Operating_System
/	O
V	O
(	O
Rel4.2MP	O
)	O
:	O
Based	O
on	O
Unix	B-Application
SVR4.2MP	O
.	O
</s>
<s>
It	O
is	O
mostly	O
similar	O
to	O
UP-UX	O
,	O
NEC	O
's	O
Unix	B-Application
operating	I-Application
system	I-Application
for	O
servers	O
.	O
</s>
