<s>
The	O
RAD6000	B-Device
radiation-hardened	O
single-board	B-Device
computer	I-Device
,	O
based	O
on	O
the	O
IBM	O
RISC	B-Device
Single	I-Device
Chip	I-Device
CPU	B-General_Concept
,	O
was	O
manufactured	O
by	O
IBM	O
Federal	O
Systems	O
.	O
</s>
<s>
RAD6000	B-Device
is	O
mainly	O
known	O
as	O
the	O
onboard	O
computer	O
of	O
numerous	O
NASA	O
spacecraft	O
.	O
</s>
<s>
The	O
radiation-hardening	O
of	O
the	O
original	O
RSC	O
1.1million-transistor	O
processor	B-Architecture
to	O
make	O
the	O
RAD6000	B-Device
's	O
CPU	B-General_Concept
was	O
done	O
by	O
IBM	O
Federal	O
Systems	O
Division	O
working	O
with	O
the	O
Air	O
Force	O
Research	O
Laboratory	O
.	O
</s>
<s>
,	O
there	O
are	O
200	O
RAD6000	B-Device
processors	O
in	O
space	O
on	O
a	O
variety	O
of	O
NASA	O
,	O
United	O
States	O
Department	O
of	O
Defense	O
and	O
commercial	O
spacecraft	O
,	O
including	O
:	O
</s>
<s>
In	O
addition	O
to	O
the	O
CPU	B-General_Concept
itself	O
,	O
the	O
RAD6000	B-Device
has	O
128MB	O
of	O
ECC	B-General_Concept
RAM	I-General_Concept
.	O
</s>
<s>
A	O
typical	O
real-time	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
running	O
on	O
NASA	O
's	O
RAD6000	B-Device
installations	O
is	O
VxWorks	B-Operating_System
.	O
</s>
<s>
Reported	O
to	O
have	O
a	O
unit	O
cost	O
somewhere	O
between	O
US$	O
200,000	O
and	O
US$300	O
,	O
000	O
,	O
RAD6000	B-Device
computers	O
were	O
released	O
for	O
sale	O
in	O
the	O
general	O
commercial	O
market	O
in	O
1996	O
.	O
</s>
<s>
The	O
RAD6000	B-Device
's	O
successor	O
is	O
the	O
RAD750	B-Device
processor	B-Architecture
,	O
based	O
on	O
IBM	O
's	O
PowerPC	B-Device
750	I-Device
.	O
</s>
