<s>
The	O
Jazz	B-Device
computer	O
architecture	O
is	O
a	O
motherboard	O
and	O
chipset	O
design	O
originally	O
developed	O
by	O
Microsoft	O
for	O
use	O
in	O
developing	O
Windows	B-Device
NT	I-Device
.	O
</s>
<s>
The	O
design	O
was	O
eventually	O
used	O
as	O
the	O
basis	O
for	O
most	O
MIPS-based	O
Windows	B-Device
NT	I-Device
systems	O
.	O
</s>
<s>
In	O
part	O
because	O
Microsoft	O
intended	O
NT	O
to	O
be	O
portable	O
between	O
various	O
microprocessor	B-Architecture
architectures	O
,	O
the	O
MIPS	B-Device
RISC	B-Architecture
architecture	O
was	O
chosen	O
for	O
one	O
of	O
the	O
first	O
development	O
platforms	O
for	O
the	O
NT	O
project	O
in	O
the	O
late	O
1980s/early	O
1990s	O
.	O
</s>
<s>
However	O
,	O
around	O
1990	O
,	O
the	O
existing	O
MIPS-based	O
systems	O
(	O
such	O
as	O
the	O
TURBOchannel-equipped	O
DECstation	B-Device
or	O
the	O
SGI	B-Device
Indigo	I-Device
)	O
varied	O
drastically	O
from	O
standard	O
Intel	O
personal	B-Device
computers	I-Device
such	O
as	O
the	O
IBM	O
ATfor	O
example	O
,	O
neither	O
used	O
the	O
ISA	B-Architecture
bus	I-Architecture
so	O
common	O
in	O
Intel	O
386-class	O
machines	O
.	O
</s>
<s>
For	O
those	O
and	O
other	O
reasons	O
,	O
Microsoft	O
decided	O
to	O
design	O
their	O
own	O
MIPS-based	O
hardware	O
platform	O
on	O
which	O
to	O
develop	O
NT	O
,	O
which	O
resulted	O
in	O
the	O
Jazz	B-Device
architecture	O
.	O
</s>
<s>
Later	O
,	O
Microsoft	O
sold	O
this	O
architecture	O
design	O
to	O
the	O
MIPS	B-Device
Computer	O
Systems	O
,	O
Inc	O
.	O
where	O
it	O
became	O
the	O
MIPS	B-Device
Magnum	I-Device
.	O
</s>
<s>
The	O
Jazz	B-Device
architecture	O
includes	O
:	O
</s>
<s>
This	O
design	O
was	O
simple	O
enough	O
and	O
powerful	O
enough	O
that	O
a	O
majority	O
of	O
Windows	O
NT-capable	O
MIPS	B-Device
systems	O
were	O
based	O
on	O
modified	O
versions	O
of	O
the	O
Jazz	B-Device
architecture	O
.	O
</s>
<s>
A	O
list	O
of	O
systems	O
which	O
more	O
or	O
less	O
were	O
based	O
on	O
Jazz	B-Device
includes	O
:	O
</s>
<s>
The	O
Jazz	B-Device
systems	O
were	O
designed	O
to	O
partially	O
comply	O
with	O
the	O
Advanced	B-Device
RISC	I-Device
Computing	I-Device
(	O
ARC	B-Device
)	O
standard	O
,	O
and	O
each	O
used	O
the	O
ARC	B-Device
firmware	O
to	O
boot	O
Windows	B-Device
NT	I-Device
.	O
</s>
<s>
Other	O
operating	O
systems	O
were	O
also	O
ported	O
to	O
various	O
Jazz	B-Device
implementations	O
,	O
such	O
as	O
RISC/os	B-Operating_System
to	O
the	O
MIPS	B-Device
Magnum	I-Device
.	O
</s>
<s>
There	O
were	O
also	O
some	O
MIPS	B-Device
systems	O
designed	O
to	O
run	O
Windows	B-Device
NT	I-Device
and	O
comply	O
with	O
the	O
ARC	B-Device
standard	O
,	O
but	O
nevertheless	O
were	O
not	O
based	O
on	O
the	O
Jazz	B-Device
platform	O
:	O
</s>
