<s>
The	O
ND-500	O
was	O
a	O
32-bit	O
superminicomputer	B-Device
delivered	O
in	O
1981	O
by	O
Norsk	O
Data	O
.	O
</s>
<s>
It	O
relied	O
on	O
a	O
ND-100	B-Device
to	O
do	O
housekeeping	O
tasks	O
and	O
run	O
the	O
OS	O
,	O
SINTRAN	B-Operating_System
III	I-Operating_System
.	O
</s>
<s>
Pins	O
were	O
snipped	O
on	O
the	O
backplane	B-Architecture
,	O
removing	O
its	O
status	O
as	O
a	O
superminicomputer	B-Device
,	O
allowing	O
it	O
to	O
legally	O
pass	O
through	O
the	O
CoCom	O
embargo	O
.	O
</s>
<s>
The	O
ND-120	O
CPU	O
line	O
,	O
which	O
constituted	O
the	O
ND-100	B-Device
side	O
of	O
most	O
ND-5000	O
computers	O
,	O
was	O
named	O
Delilah	O
.	O
</s>
<s>
As	O
the	O
5000	O
line	O
progressed	O
in	O
speed	O
,	O
the	O
dual-arch	O
ND-100/500	O
configuration	O
increasingly	O
became	O
bottlenecked	O
by	O
all	O
input/output	B-General_Concept
(	O
I/O	B-General_Concept
)	O
having	O
to	O
go	O
through	O
the	O
ND-100	B-Device
.	O
</s>
<s>
LED	O
was	O
a	O
programmer	O
's	O
source-code	B-Application
editor	I-Application
by	O
Norsk	O
Data	O
running	O
on	O
the	O
ND-500	O
computers	O
running	O
Sintran	B-Operating_System
III	I-Operating_System
.	O
</s>
<s>
It	O
featured	O
automatic	O
indenting	O
,	O
pretty-printing	O
of	O
source	O
code	O
,	O
and	O
integration	O
with	O
the	O
compiler	B-Language
environment	O
.	O
</s>
<s>
In	O
198283	O
,	O
Logica	O
PLC	O
in	O
London	O
undertook	O
a	O
project	O
,	O
on	O
behalf	O
of	O
ND	O
,	O
to	O
port	O
Unix	B-Application
Berkley	B-Operating_System
Software	I-Operating_System
Distribution	I-Operating_System
(	O
BSD	B-Operating_System
)	O
4.2	O
to	O
the	O
ND-500	O
.	O
</s>
<s>
A	O
C	B-Language
compiler	B-Language
from	O
Luleå	O
University	O
College	O
in	O
Northern	O
Sweden	O
was	O
used	O
.	O
</s>
<s>
The	O
goal	O
was	O
to	O
port	O
Unix	B-Application
BSD	B-Operating_System
to	O
the	O
ND-500	O
and	O
use	O
the	O
ND-100	B-Device
running	O
Sintran-III	O
as	O
the	O
front	O
end	O
.	O
</s>
<s>
Thus	O
,	O
all	O
I/O	B-General_Concept
had	O
to	O
go	O
through	O
the	O
ND-100	B-Device
which	O
proved	O
very	O
inefficient	O
.	O
</s>
<s>
For	O
example	O
,	O
running	O
vi	B-Application
on	O
the	O
ND-500	O
brought	O
the	O
ND-100	B-Device
to	O
its	O
knees	O
.	O
</s>
<s>
The	O
purpose	O
of	O
the	O
effort	O
was	O
so	O
that	O
ND	O
could	O
sell	O
the	O
500	O
to	O
the	O
European	O
Organization	O
for	O
Nuclear	O
Research	O
(	O
CERN	O
)	O
,	O
who	O
were	O
buying	O
VAXes	B-Device
from	O
Digital	O
Equipment	O
Corporation	O
.	O
</s>
<s>
Although	O
the	O
ND-500	O
processor	O
was	O
very	O
fast	O
for	O
its	O
time	O
,	O
it	O
could	O
n't	O
compete	O
with	O
the	O
superior	O
VAX	B-Device
I/O	B-General_Concept
architecture	O
.	O
</s>
