<s>
SPIM	B-Application
is	O
a	O
MIPS	B-Device
processor	O
simulator	O
,	O
designed	O
to	O
run	O
assembly	B-Language
language	I-Language
code	O
for	O
this	O
architecture	O
.	O
</s>
<s>
The	O
program	O
simulates	O
R2000	B-Device
and	O
R3000	B-Device
processors	O
,	O
and	O
was	O
written	O
by	O
James	O
R	O
.	O
Larus	O
while	O
a	O
professor	O
at	O
the	O
University	O
of	O
Wisconsin	O
–	O
Madison	O
.	O
</s>
<s>
The	O
MIPS	B-Device
machine	O
language	O
is	O
often	O
taught	O
in	O
college-level	O
assembly	O
courses	O
,	O
especially	O
those	O
using	O
the	O
textbook	O
Computer	O
Organization	O
and	O
Design	O
:	O
The	O
Hardware/Software	O
Interface	O
by	O
David	O
A	O
.	O
Patterson	O
and	O
John	O
L	O
.	O
Hennessy	O
(	O
)	O
.	O
</s>
<s>
The	O
name	O
of	O
the	O
simulator	O
is	O
a	O
reversal	O
of	O
the	O
letters	O
"	O
MIPS	B-Device
"	O
.	O
</s>
<s>
SPIM	B-Application
simulators	O
are	O
available	O
for	O
Windows	B-Application
(	O
PCSpim	O
)	O
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Unix/Linux	O
-based	O
(	O
xspim	O
)	O
operating	O
systems	O
.	O
</s>
<s>
As	O
of	O
release	O
8.0	O
in	O
January	O
2010	O
,	O
the	O
simulator	O
is	O
licensed	O
under	O
the	O
standard	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
In	O
January	O
,	O
2011	O
,	O
a	O
major	O
release	O
version	O
9.0	O
features	O
QtSpim	O
that	O
has	O
a	O
new	O
user	O
interface	O
built	O
on	O
the	O
cross-platform	B-Operating_System
Qt	B-Language
UI	I-Language
framework	I-Language
and	O
runs	O
on	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
From	O
this	O
version	O
,	O
the	O
project	O
has	O
also	O
been	O
moved	O
to	O
SourceForge	B-Application
for	O
better	O
maintenance	O
.	O
</s>
<s>
Precompiled	O
versions	O
of	O
QtSpim	O
for	O
Linux	B-Application
(	O
32-bit	O
)	O
,	O
Windows	B-Application
,	O
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
as	O
well	O
as	O
PCSpim	O
for	O
Windows	B-Application
are	O
provided	O
.	O
</s>
<s>
The	O
SPIM	B-Application
simulator	O
comes	O
with	O
a	O
rudimentary	O
operating	O
system	O
,	O
which	O
allows	O
the	O
programmer	O
usage	O
of	O
common	O
used	O
functions	O
in	O
a	O
comfortable	O
way	O
.	O
</s>
<s>
The	O
SPIM	B-Application
OS	O
expects	O
a	O
label	O
named	O
as	O
a	O
handover	O
point	O
from	O
the	O
OS-preamble	O
.	O
</s>
<s>
MARS	O
(	O
MIPS	B-Device
Assembler	B-Language
and	O
Runtime	O
Simulator	O
)	O
is	O
a	O
Java-based	O
IDE	O
for	O
the	O
MIPS	B-Device
Assembly	I-Device
Programming	O
Language	O
and	O
an	O
alternative	O
to	O
SPIM	B-Application
.	O
</s>
<s>
Imperas	O
is	O
a	O
suite	O
of	O
embedded	O
software	O
development	O
tools	O
for	O
MIPS	B-Device
architecture	I-Device
which	O
uses	O
Just-in-time	O
compilation	O
emulation	O
and	O
simulation	O
technology	O
.	O
</s>
<s>
There	O
are	O
over	O
30	O
open	O
source	O
models	O
of	O
the	O
MIPS	B-Device
32	O
bit	O
and	O
64	O
bit	O
cores	O
.	O
</s>
<s>
Other	O
alternative	O
to	O
SPIM	B-Application
for	O
educational	O
purposes	O
is	O
The	O
CREATOR	O
simulator	O
.	O
</s>
<s>
CREATOR	O
is	O
portable	O
(	O
can	O
be	O
executed	O
in	O
current	O
web	O
browsers	O
)	O
and	O
allow	O
students	O
to	O
learn	O
several	O
assembly	B-Language
languages	I-Language
of	O
different	O
processors	O
at	O
the	O
same	O
time	O
(	O
CREATOR	O
includes	O
examples	O
of	O
MIPS32	O
and	O
RISC-V	O
instructions	O
)	O
.	O
</s>
