<s>
The	O
Family	B-Device
Computer	I-Device
Emulator	I-Device
was	O
one	O
of	O
the	O
first	O
Famicom	O
emulators	B-Application
.	O
</s>
<s>
The	O
emulator	B-Application
was	O
simple	O
,	O
but	O
it	O
was	O
able	O
to	O
run	O
games	O
such	O
as	O
Donkey	B-Application
Kong	I-Application
.	O
</s>
<s>
The	O
ROM	B-Protocol
files	O
had	O
to	O
be	O
dumped	O
through	O
a	O
complicated	O
process	O
.	O
</s>
<s>
Udagawa	O
only	O
tested	O
a	O
few	O
games	O
on	O
his	O
Famicom	O
Emulator	B-Application
,	O
those	O
games	O
being	O
:	O
</s>
<s>
Mario	B-Application
Bros	I-Application
.	I-Application
</s>
<s>
The	O
emulator	B-Application
could	O
not	O
do	O
sound	O
emulation	B-Application
,	O
and	O
did	O
not	O
support	O
the	O
Famicom	O
's	O
microphone	O
.	O
</s>
<s>
The	O
ROM	B-Protocol
had	O
to	O
be	O
256	O
kilobits	O
,	O
and	O
the	O
Graphics	O
Tile	O
Data	O
file	O
had	O
to	O
be	O
64	O
kilobits	O
.	O
</s>
