<s>
The	O
MDMX	B-General_Concept
(	O
MIPS	B-General_Concept
Digital	I-General_Concept
Media	I-General_Concept
eXtension	I-General_Concept
)	O
,	O
also	O
known	O
as	O
MaDMaX	O
,	O
is	O
an	O
extension	O
to	O
the	O
MIPS	B-Device
architecture	I-Device
released	O
in	O
October	O
1996	O
at	O
the	O
Microprocessor	O
Forum	O
.	O
</s>
<s>
MDMX	B-General_Concept
was	O
developed	O
to	O
accelerate	O
multimedia	O
applications	O
that	O
were	O
becoming	O
more	O
popular	O
and	O
common	O
in	O
the	O
1990s	O
on	O
RISC	O
and	O
CISC	O
systems	O
.	O
</s>
<s>
MDMX	B-General_Concept
defines	O
a	O
new	O
set	O
of	O
thirty-two	O
64-bit	O
registers	O
called	O
media	O
registers	O
,	O
which	O
are	O
mapped	O
onto	O
the	O
existing	O
floating-point	O
registers	O
to	O
save	O
hardware	O
;	O
and	O
a	O
192-bit	O
extended	O
product	O
accumulator	O
.	O
</s>
<s>
Variants	O
of	O
existing	O
instructions	O
operate	O
on	O
these	O
data	O
types	O
,	O
performing	O
saturating	B-Algorithm
arithmetic	I-Algorithm
,	O
logical	O
,	O
shift	O
,	O
compare	O
and	O
align	O
operations	O
.	O
</s>
<s>
MDMX	B-General_Concept
also	O
introduced	O
19	O
instructions	O
for	O
permutation	O
,	O
manipulating	O
bytes	O
in	O
registers	O
,	O
performing	O
arithmetic	O
with	O
the	O
accumulator	O
,	O
and	O
accumulator	O
access	O
.	O
</s>
