<s>
Nestopia	B-Application
UE	O
-	O
and	O
its	O
predecessor	O
Nestopia	B-Application
-	O
are	O
an	O
open-source	B-Application
NES/Famicom	O
emulator	B-Application
designed	O
to	O
emulate	O
the	O
NES	O
hardware	O
as	O
accurately	O
as	O
possible	O
.	O
</s>
<s>
The	O
requirements	O
for	O
the	O
original	O
Nestopia	B-Application
were	O
considered	O
higher	O
than	O
some	O
of	O
its	O
contemporaries	O
such	O
as	O
Stella	O
.	O
</s>
<s>
In	O
order	O
to	O
run	O
an	O
optimal	O
emulation	B-Application
,	O
the	O
program	O
requires	O
a	O
minimum	O
800MHz	O
processor	O
.	O
</s>
<s>
Its	O
high	O
requirement	O
is	O
due	O
to	O
its	O
accurate	O
emulation	B-Application
of	O
the	O
NES	O
hardware	O
.	O
</s>
<s>
The	O
emulator	B-Application
will	O
play	O
most	O
ROMs	O
and	O
has	O
a	O
strong	O
port	O
for	O
the	O
Apple	O
Macintosh	O
.	O
</s>
<s>
The	O
original	O
Nestopia	B-Application
allowed	O
customization	O
of	O
colors	O
,	O
sounds	O
,	O
and	O
graphics	O
.	O
</s>
<s>
Brandon	O
Widdler	O
of	O
Digital	O
Trends	O
considers	O
the	O
emulator	B-Application
one	O
of	O
the	O
best	O
for	O
the	O
NES	O
,	O
though	O
he	O
admits	O
that	O
it	O
has	O
fewer	O
features	O
than	O
its	O
rival	O
FCEUX	B-Application
.	O
</s>
<s>
Nestopia	B-Application
was	O
originally	O
developed	O
for	O
Windows	O
by	O
Martin	O
Freij	O
.	O
</s>
<s>
Richard	O
Bannister	O
and	O
R	O
.	O
Belmont	O
later	O
ported	O
it	O
to	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Linux	B-Application
,	O
respectively	O
.	O
</s>
<s>
Original	O
development	O
ended	O
in	O
2008	O
,	O
but	O
forked	O
into	O
Nestopia	B-Application
UE	O
.	O
</s>
