<s>
A	O
multitap	B-Device
is	O
a	O
video	B-Device
game	I-Device
console	I-Device
peripheral	O
that	O
increases	O
the	O
number	O
of	O
controller	B-Device
ports	O
available	O
to	O
the	O
player	O
,	O
allowing	O
additional	O
controllers	O
to	O
be	O
used	O
in	O
play	O
,	O
similar	O
to	O
a	O
USB	B-Protocol
hub	O
or	O
a	O
power	O
strip	O
.	O
</s>
<s>
A	O
multitap	B-Device
often	O
takes	O
the	O
form	O
of	O
a	O
box	O
with	O
three	O
or	O
more	O
controller	B-Device
ports	O
which	O
is	O
then	O
connected	O
to	O
a	O
controller	B-Device
port	O
on	O
the	O
console	O
itself	O
.	O
</s>
<s>
Mainly	O
sports	O
games	O
have	O
supported	O
multitaps	B-Device
due	O
to	O
the	O
multiplayer	O
aspect	O
of	O
some	O
sport	O
games	O
,	O
though	O
some	O
role-playing	O
video	O
games	O
and	O
first	O
person	O
shooters	O
have	O
taken	O
advantage	O
of	O
multitap	B-Device
support	O
.	O
</s>
<s>
The	O
earliest	O
multi-controller	O
adapter	O
was	O
the	O
Joypair	O
by	O
HAL	O
Laboratory	O
,	O
released	O
in	O
Japan	O
for	O
Nintendo	O
's	O
Family	O
Computer	O
in	O
1985	B-Application
,	O
which	O
allows	O
two	O
additional	O
controllers	O
to	O
be	O
plugged	O
into	O
the	O
console	O
's	O
DA-15	B-Protocol
expansion	O
port	O
.	O
</s>
<s>
Originally	O
the	O
Joypair	O
was	O
only	O
intended	O
to	O
allow	O
two	O
players	O
to	O
use	O
specialized	O
controllers	O
(	O
specifically	O
HAL	O
's	O
controllers	O
)	O
in	O
place	O
of	O
the	O
standard	O
Famicom	O
joypads	O
(	O
which	O
were	O
hardwired	O
into	O
the	O
console	O
itself	O
)	O
,	O
but	O
Nekketsu	O
Kōkō	O
Dodgeball	O
Bu	O
(	O
the	O
Japanese	O
version	O
of	O
Super	B-Application
Dodge	I-Application
Ball	I-Application
)	O
utilized	O
it	O
to	O
allow	O
up	O
to	O
four	O
players	O
to	O
participate	O
in	O
the	O
game	O
's	O
Bean	O
Ball	O
mode.Hori	O
later	O
released	O
the	O
Twin	O
Adapter	O
in	O
1989	B-Application
as	O
an	O
alternative	O
to	O
the	O
Joypair	O
,	O
while	O
certain	O
controllers	O
(	O
such	O
as	O
the	O
ASCII	O
Stick	O
series	O
and	O
certain	O
models	O
of	O
the	O
Family	O
Champ	O
joysticks	O
)	O
came	O
equipped	O
with	O
an	O
additional	O
expansion	O
port	O
that	O
allowed	O
for	O
users	O
to	O
connect	B-Application
an	O
additional	O
controller	B-Device
into	O
them	O
.	O
</s>
<s>
During	O
the	O
same	O
year	O
,	O
Nintendo	O
released	O
their	O
own	O
first-party	O
adapters	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
in	O
North	O
America	O
:	O
the	O
NES	B-Device
Four	I-Device
Score	I-Device
and	O
the	O
NES	B-Device
Satellite	I-Device
.	O
</s>
<s>
Despite	O
the	O
fact	O
that	O
the	O
HVC-101	O
model	O
of	O
the	O
Famicom	O
uses	O
the	O
same	O
controller	B-Device
ports	O
as	O
the	O
NES	O
,	O
4-player	O
Famicom	O
games	O
are	O
not	O
compatible	O
with	O
the	O
NES	O
multitaps	B-Device
.	O
</s>
<s>
The	O
Multitap	B-Device
(	O
the	O
first	O
device	O
to	O
be	O
marketed	O
with	O
such	O
a	O
name	O
)	O
by	O
NEC	O
Home	O
Electronics	O
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
,	O
which	O
launched	O
alongside	O
the	O
platform	O
in	O
Japan	O
on	O
October	O
30	O
,	O
1987	O
,	O
was	O
the	O
first	O
multi-controller	O
adapter	O
made	O
specifically	O
for	O
multiplayer	O
support	O
,	O
allowing	O
up	O
to	O
five	O
controllers	O
to	O
be	O
plugged	O
into	O
the	O
console	O
.	O
</s>
<s>
Because	O
the	O
console	O
itself	O
only	O
has	O
one	O
controller	B-Device
port	O
as	O
standard	O
,	O
the	O
Multitap	B-Device
was	O
a	O
necessity	O
for	O
games	O
that	O
supported	O
more	O
than	O
one	O
player	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
various	O
inexpensive	O
alternatives	O
to	O
the	O
Multitap	B-Device
were	O
released	O
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
by	O
third-party	O
companies	O
,	O
such	O
as	O
the	O
Battle	O
Tap	O
by	O
Big	O
Club	O
and	O
the	O
Joy	O
Tap	O
3	O
by	O
Hudson	O
Soft	O
,	O
which	O
featured	O
less	O
controller	B-Device
ports	O
than	O
the	O
first-party	O
Multitap	B-Device
,	O
but	O
these	O
were	O
gradually	O
phased	O
out	O
as	O
more	O
games	O
started	O
to	O
allow	O
up	O
to	O
five	O
players	O
.	O
</s>
<s>
The	O
first	O
PC	B-General_Concept
Engine	I-General_Concept
game	O
to	O
allow	O
more	O
than	O
two	O
players	O
simultaneously	O
was	O
Pro	B-Application
Tennis	I-Application
:	I-Application
World	I-Application
Court	I-Application
in	O
August	O
1988	B-Application
(	O
ten	O
months	O
after	O
the	O
launch	O
of	O
the	O
system	O
)	O
,	O
which	O
allowed	O
up	O
to	O
four	O
players	O
in	O
a	O
doubles	O
match	O
,	O
while	O
Dungeon	B-Application
Explorer	I-Application
in	O
1989	B-Application
was	O
the	O
first	O
game	O
to	O
fully	O
allow	O
up	O
to	O
five	O
players	O
.	O
</s>
<s>
The	O
Multitap	B-Device
was	O
redesigned	O
into	O
the	O
TurboTap	O
for	O
the	O
North	O
American	O
market	O
with	O
the	O
launch	O
of	O
the	O
TurboGrafx-16	B-General_Concept
in	O
1989	B-Application
,	O
and	O
later	O
as	O
the	O
DuoTap	O
for	O
the	O
TurboDuo	B-General_Concept
in	O
1992	O
(	O
the	O
different	O
models	O
were	O
due	O
to	O
the	O
change	O
in	O
controller	B-Device
ports	O
between	O
the	O
TurboGrafx-16	B-General_Concept
and	O
the	O
TurboDuo	B-General_Concept
)	O
.	O
</s>
<s>
Hudson	O
Soft	O
manufactured	O
the	O
Super	O
Multitap	B-Device
,	O
a	O
multiplayer	O
adapter	O
for	O
the	O
Super	B-Application
NES	I-Application
in	O
1993	O
.	O
</s>
<s>
The	O
adapter	O
connects	O
to	O
the	O
second	O
controller	B-Device
port	O
of	O
the	O
SNES	B-Application
control	O
deck	O
(	O
leaving	O
the	O
first	O
one	O
free	O
)	O
,	O
resulting	O
in	O
a	O
total	O
of	O
five	O
controller	B-Device
ports	O
(	O
much	O
like	O
the	O
original	O
Multitap	B-Device
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
)	O
.	O
</s>
<s>
It	O
was	O
produced	O
primarily	O
for	O
Super	B-Application
Bomberman	I-Application
,	O
which	O
had	O
a	O
prior	O
installment	O
on	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
(	O
simply	O
titled	O
Bomberman	B-Application
)	O
that	O
featured	O
a	O
five-player	O
battle	O
mode	O
,	O
although	O
the	O
SNES	B-Application
game	O
only	O
supported	O
up	O
to	O
four	O
players	O
(	O
the	O
series	O
did	O
not	O
support	O
five	O
players	O
on	O
the	O
SNES	B-Application
until	O
Super	B-Application
Bomberman	I-Application
3	I-Application
,	O
which	O
was	O
released	O
only	O
in	O
Japan	O
and	O
the	O
PAL	O
region	O
)	O
.	O
</s>
<s>
The	O
Super	O
Multitap	B-Device
has	O
a	O
switch	O
for	O
2P	O
Mode	O
and	O
5P	O
Mode	O
,	O
allowing	O
it	O
to	O
remain	O
connected	O
into	O
the	O
console	O
without	O
affecting	O
incompatible	O
games	O
.	O
</s>
<s>
While	O
no	O
Nintendo-produced	O
version	O
of	O
the	O
peripheral	O
was	O
ever	O
produced	O
(	O
nor	O
were	O
there	O
any	O
first-party	O
games	O
that	O
supported	O
it	O
)	O
,	O
various	O
other	O
SNES	B-Application
multitaps	B-Device
were	O
later	O
produced	O
by	O
other	O
companies	O
(	O
both	O
,	O
licensed	O
and	O
unlicensed	O
)	O
such	O
as	O
the	O
Hori	O
Multitap	B-Device
(	O
released	O
by	O
Bulletproof	O
Software	O
in	O
North	O
America	O
as	O
the	O
Super	O
Links	O
)	O
and	O
the	O
Multi-Adaptor	O
Auto	O
.	O
</s>
<s>
One	O
particular	O
unlicensed	O
model	O
,	O
the	O
Tribal	O
Tap	O
6	O
Player	O
Adaptor	O
by	O
Naki	O
,	O
added	O
a	O
fraudulent	O
sixth	O
controller	B-Device
port	O
that	O
was	O
promoted	O
as	O
a	O
selling	O
point	O
against	O
competing	O
multitap	B-Device
models	O
,	O
even	O
though	O
no	O
licensed	O
SNES	B-Application
game	O
ever	O
supported	O
more	O
than	O
five	O
players	O
.	O
</s>
<s>
Two	O
independently	O
developed	O
multitaps	B-Device
were	O
released	O
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
also	O
in	O
1993	O
.	O
</s>
<s>
The	O
4-Way	O
Play	O
(	O
which	O
utilized	O
both	O
controller	B-Device
ports	O
)	O
was	O
developed	O
by	O
Electronic	O
Arts	O
without	O
license	O
from	O
Sega	O
and	O
was	O
made	O
specifically	O
for	O
their	O
lineup	O
of	O
sports	O
games	O
(	O
such	O
as	O
Madden	B-Application
NFL	I-Application
'	I-Application
94	I-Application
)	O
,	O
whereas	O
the	O
Team	O
Player	O
(	O
known	O
as	O
the	O
SegaTap	O
in	O
Japan	O
)	O
was	O
developed	O
by	O
Tengen	O
for	O
Gauntlet	B-Application
IV	I-Application
and	O
sold	O
by	O
Sega	O
as	O
a	O
first-party	O
product	O
.	O
</s>
<s>
In	O
contrast	O
to	O
the	O
4-Way	O
Play	O
,	O
the	O
Team	O
Player	O
only	O
required	O
one	O
controller	B-Device
port	O
(	O
leaving	O
an	O
additional	O
port	O
free	O
for	O
a	O
fifth	O
player	O
,	O
much	O
like	O
the	O
Super	O
Multitap	B-Device
)	O
and	O
also	O
acted	O
as	O
a	O
splitter	O
that	O
allowed	O
users	O
to	O
switch	O
between	O
multiple	O
input	O
devices	O
(	O
such	O
as	O
a	O
mouse	O
or	O
a	O
light	O
gun	O
)	O
connected	O
to	O
the	O
console	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
The	O
original	O
model	O
of	O
the	O
Team	O
Player	O
(	O
MK-1654	O
)	O
was	O
incompatible	O
with	O
games	O
that	O
required	O
the	O
4-Way	O
Play	O
,	O
so	O
a	O
revision	O
(	O
MK-1647	O
)	O
was	O
later	O
produced	O
that	O
solved	O
this	O
issue	O
by	O
adding	O
a	O
second	O
controller	B-Device
cord	O
and	O
an	O
"	O
Extra	O
"	O
setting	O
for	O
4-Way	O
Play	O
compatibility	O
.	O
</s>
<s>
While	O
most	O
Team	O
Player-compatible	O
titles	O
only	O
supported	O
up	O
to	O
four	O
players	O
(	O
with	O
some	O
games	O
such	O
as	O
Columns	B-Application
III	I-Application
supporting	O
up	O
to	O
five	O
)	O
,	O
Konami	O
's	O
Double	O
Dribble	O
:	O
The	O
Playoff	O
Season	O
and	O
Sega	O
's	O
Egawa	O
Suguru	O
's	O
Super	O
League	O
CD	O
(	O
a	O
Japan-exclusive	O
baseball	O
game	O
for	O
Mega	O
CD	O
)	O
both	O
allow	O
up	O
to	O
eight	O
players	O
with	O
the	O
use	O
of	O
two	O
Team	O
Player	O
adapters	O
(	O
one	O
in	O
each	O
controller	B-Device
port	O
)	O
.	O
</s>
<s>
In	O
addition	O
to	O
these	O
multitaps	B-Device
,	O
Codemasters	O
released	O
a	O
series	O
of	O
Genesis	O
cartridges	O
known	O
as	O
the	O
J-Cart	B-Device
with	O
two	O
additional	O
controller	B-Device
ports	O
installed	O
on	O
them	O
,	O
allowing	O
users	O
to	O
plug	O
in	O
additional	O
controllers	O
on	O
them	O
without	O
the	O
need	O
of	O
an	O
adapter	O
.	O
</s>
<s>
A	O
total	O
of	O
six	O
games	O
were	O
released	O
in	O
J-Cart	B-Device
format	O
.	O
</s>
<s>
A	O
few	O
games	O
released	O
for	O
the	O
Amiga	B-Device
home	O
computer	O
system	O
after	O
1995	B-Application
included	O
support	O
for	O
custom-built	O
multitaps	B-Device
.	O
</s>
<s>
Instructions	O
for	O
how	O
to	O
build	O
a	O
multitap	B-Device
were	O
included	O
in	O
the	O
manual	O
to	O
classic	O
Amiga	B-Device
racing	O
sequel	O
Super	B-Application
Skidmarks	I-Application
.	O
</s>
<s>
The	O
Amiga	B-Device
multitap	B-Device
would	O
plug	O
into	O
the	O
computer	O
's	O
parallel	O
port	O
and	O
provide	O
two	O
additional	O
ports	O
for	O
use	O
.	O
</s>
<s>
Earlier	O
,	O
the	O
Amiga	B-Device
version	O
of	O
Bomberman	B-Application
,	O
Dynablaster	B-Application
had	O
already	O
included	O
support	O
for	O
a	O
similar	O
device	O
,	O
as	O
demonstrated	O
on	O
Season	O
2	O
,	O
Episode	O
5	O
of	O
TV	O
's	O
GamesMaster	O
.	O
</s>
<s>
The	O
original	B-Device
PlayStation	I-Device
Multitap	B-Device
was	O
one	O
of	O
the	O
earliest	O
peripherals	O
released	O
for	O
the	O
platform	O
.	O
</s>
<s>
It	O
featured	O
not	O
only	O
four	O
additional	O
controller	B-Device
ports	O
,	O
but	O
also	O
four	O
memory	O
card	O
slots	O
for	O
each	O
of	O
them	O
as	O
well	O
.	O
</s>
<s>
Like	O
the	O
Team	O
Player	O
adapter	O
for	O
the	O
Genesis	O
,	O
two	O
PlayStation	B-Device
Multitaps	I-Device
could	O
be	O
used	O
at	O
the	O
same	O
time	O
for	O
up	O
to	O
eight	O
controllers	O
and	O
memory	O
cards	O
,	O
although	O
very	O
few	O
games	O
allowed	O
for	O
more	O
than	O
five	O
players	O
.	O
</s>
<s>
A	O
six-controller	O
adapter	O
was	O
released	O
for	O
the	O
Sega	B-Device
Saturn	I-Device
(	O
sold	O
as	O
the	O
Multi-Player	O
Adaptor	O
in	O
the	O
United	O
States	O
and	O
as	O
the	O
Multi	O
Terminal	O
6	O
in	O
Japan	O
)	O
,	O
which	O
features	O
the	O
most	O
controller	B-Device
ports	O
out	O
of	O
all	O
the	O
multitaps	B-Device
made	O
by	O
first	O
party	O
manufacturers	O
.	O
</s>
<s>
The	O
most	O
famous	O
Saturn	B-Device
game	O
to	O
make	O
use	O
of	O
the	O
multitap	B-Device
was	O
Saturn	B-Application
Bomberman	I-Application
,	O
which	O
supports	O
up	O
to	O
10	O
players	O
(	O
requires	O
two	O
multitaps	B-Device
)	O
simultaneously	O
.	O
</s>
<s>
A	O
number	O
of	O
sports	O
games	O
such	O
as	O
NFL	B-Application
Quarterback	I-Application
Club	I-Application
96	I-Application
support	O
the	O
maximum	O
of	O
12	O
players	O
.	O
</s>
<s>
The	O
"	O
Sega	B-Device
Saturn	I-Device
Multiplayer	O
Task	O
Force	O
(	O
SSMTF	O
)	O
"	O
is	O
a	O
small	O
but	O
enthusiastic	O
group	O
of	O
developers	O
who	O
have	O
released	O
homebrew	O
games	O
dedicated	O
to	O
utilizing	O
the	O
Saturn	B-Device
's	O
multitap	B-Device
.	O
</s>
<s>
One	O
of	O
the	O
first	O
multitaps	B-Device
for	O
personal	O
computers	O
,	O
the	O
Gravis	O
Interface	O
Protocol	O
(	O
officially	O
abbreviated	O
GrIP	O
)	O
from	O
Advanced	O
Gravis	O
Computer	O
Technology	O
,	O
has	O
six	O
ports	O
,	O
four	O
for	O
digital	O
Gravis-brand	O
gamepads	O
(	O
e.g.	O
</s>
<s>
the	O
Gravis	B-Device
PC	I-Device
GamePad	I-Device
)	O
,	O
and	O
two	O
pass-through	O
ports	O
for	O
analog	O
joysticks	O
.	O
</s>
<s>
The	O
Nintendo	B-Operating_System
64	I-Operating_System
did	O
not	O
have	O
any	O
official	O
multitaps	B-Device
released	O
for	O
it	O
,	O
as	O
the	O
console	O
featured	O
four	O
controller	B-Device
ports	O
by	O
default	O
(	O
the	O
first	O
console	O
to	O
do	O
so	O
since	O
the	O
Bally	B-Device
Astrocade	I-Device
and	O
the	O
Atari	B-General_Concept
5200	I-General_Concept
)	O
.	O
</s>
<s>
Dreamcast	B-Operating_System
and	O
the	B-Application
original	I-Application
Xbox	I-Application
would	O
follow	O
the	O
N64	B-Operating_System
's	O
example	O
by	O
including	O
four	O
controller	B-Device
ports	O
as	O
default	O
as	O
well	O
,	O
as	O
did	O
Nintendo	O
's	O
succeeding	O
console	O
,	O
the	O
GameCube	B-Application
.	O
</s>
<s>
Despite	O
this	O
,	O
the	O
PlayStation	B-Device
2	I-Device
was	O
released	O
with	O
only	O
two	O
controller	B-Device
ports	O
like	O
its	O
predecessor	O
,	O
so	O
a	O
Multitap	B-Device
was	O
still	O
produced	O
for	O
the	O
console	O
.	O
</s>
<s>
Because	O
of	O
compatibility	O
issues	O
,	O
the	O
original	O
PS2	B-Device
Multitap	B-Device
(	O
SCPH-10090	O
)	O
for	O
the	O
early	O
models	O
of	O
the	O
console	O
only	O
worked	O
specifically	O
on	O
PS2	B-Device
games	O
,	O
meaning	O
that	O
the	O
original	B-Device
PlayStation	I-Device
or	O
PS	O
one	O
Multitap	B-Device
was	O
still	O
required	O
for	O
the	O
games	O
on	O
the	O
previous	O
console	O
.	O
</s>
<s>
For	O
the	O
"	O
slimline	O
"	O
model	O
of	O
the	O
PS2	B-Device
,	O
a	O
new	O
Multitap	B-Device
(	O
SCPH-70120	O
)	O
was	O
made	O
that	O
supported	O
both	O
,	O
PS	O
and	O
PS2	B-Device
games	O
.	O
</s>
<s>
All	O
three	O
seventh	O
generation	O
consoles	O
abandoned	O
the	O
use	O
of	O
conventional	O
wired	O
controller	B-Device
in	O
favor	O
of	O
having	O
wireless	B-Device
controllers	I-Device
as	O
standard	O
,	O
although	O
the	O
maximum	O
number	O
of	O
detected	O
controllers	O
varies	O
with	O
each	O
platform	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
console	O
can	O
detect	O
up	O
to	O
four	O
wireless	B-Device
controllers	I-Device
,	O
as	O
well	O
as	O
three	O
wired	O
controllers	O
via	O
USB	B-Protocol
connection	O
.	O
</s>
<s>
The	B-Operating_System
Wii	I-Operating_System
,	O
which	O
uses	O
a	O
motion-sensitive	O
remote	O
controller	B-Device
known	O
as	O
the	B-Operating_System
Wii	I-Operating_System
Remote	O
,	O
could	O
detect	O
up	O
to	O
four	O
wireless	B-Device
controllers	I-Device
,	O
but	O
also	O
had	O
four	O
controller	B-Device
ports	O
that	O
were	O
compatible	O
with	O
GameCube	B-Application
controllers	O
.	O
</s>
<s>
The	O
PlayStation	B-Operating_System
3	I-Operating_System
could	O
support	O
up	O
to	O
seven	O
wireless	B-Device
controllers	I-Device
.	O
</s>
<s>
For	O
the	O
eighth	O
generation	O
consoles	O
,	O
the	O
maximum	O
number	O
of	O
wireless	B-Device
controllers	I-Device
detected	O
by	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
was	O
reduced	O
to	O
four	O
,	O
while	O
the	O
ones	O
detected	O
by	O
the	B-Device
Xbox	I-Device
One	I-Device
was	O
raised	O
to	O
eight	O
.	O
</s>
<s>
The	B-Operating_System
Wii	I-Operating_System
U	I-Device
can	O
support	O
up	O
to	O
seven	O
Wii	B-Device
Remotes	I-Device
or	O
Wii	B-Device
U	I-Device
Pro	O
Controllers	O
in	O
addition	O
to	O
the	O
GamePad	O
,	O
for	O
a	O
total	O
of	O
eight	O
wireless	B-Device
controllers	I-Device
.	O
</s>
<s>
The	B-Operating_System
Wii	I-Operating_System
U	O
does	O
not	O
feature	O
GameCube	B-Application
controller	B-Device
ports	O
by	O
default	O
,	O
but	O
a	O
GameCube	B-Application
Controller	B-Device
Adapter	O
was	O
primarily	O
made	O
for	O
Super	B-Application
Smash	I-Application
Bros	I-Application
.	I-Application
for	I-Application
Wii	I-Application
U	I-Application
that	O
connects	O
up	O
to	O
four	O
GameCube	B-Application
controllers	O
via	O
the	B-Operating_System
Wii	I-Operating_System
U	O
's	O
USB	B-Protocol
port	O
.	O
</s>
<s>
Through	O
the	O
use	O
of	O
a	O
USB	B-Protocol
hub	O
and	O
two	O
adapters	O
,	O
up	O
to	O
eight	O
GameCube	B-Application
controllers	O
can	O
be	O
used	O
.	O
</s>
<s>
The	O
Nintendo	B-Application
Switch	I-Application
supports	O
up	O
to	O
eight	O
controllers	O
,	O
in	O
any	O
combination	O
of	O
individual	O
Joy-Con	B-General_Concept
controllers	O
or	O
Pro	O
Controllers	O
.	O
</s>
<s>
Many	O
systems	O
were	O
not	O
designed	O
with	O
multitaps	B-Device
in	O
mind	O
,	O
and	O
so	O
require	O
some	O
clever	O
design	O
to	O
work	O
.	O
</s>
<s>
Because	O
of	O
this	O
,	O
games	O
usually	O
have	O
to	O
be	O
specially	O
written	O
to	O
include	O
multitap	B-Device
support	O
.	O
</s>
<s>
The	O
most	O
common	O
way	O
of	O
implementing	O
8	O
and	O
16	O
bit	O
multitaps	B-Device
is	O
to	O
multiplex	B-Architecture
the	O
signals	O
from	O
each	O
attached	O
controller	B-Device
in	O
some	O
way	O
.	O
</s>
<s>
Some	O
systems	O
have	O
unused	O
lines	O
available	O
on	O
the	O
controller	B-Device
port	O
,	O
designed	O
for	O
future	O
expansion	O
,	O
which	O
can	O
be	O
used	O
.	O
</s>
<s>
Another	O
popular	O
technique	O
is	O
to	O
serialise	O
the	O
data	O
from	O
each	O
controller	B-Device
.	O
</s>
<s>
Since	O
the	O
NES	O
and	O
Super	B-Application
NES	I-Application
both	O
use	O
a	O
serial	O
bus	O
for	O
standard	O
controllers	O
,	O
creating	O
a	O
multitap	B-Device
is	O
simply	O
a	O
case	O
of	O
increasing	O
the	O
amount	O
of	O
serial	O
data	O
available	O
to	O
the	O
console	O
.	O
</s>
<s>
Later	O
systems	O
used	O
more	O
complex	O
buses	O
,	O
such	O
as	O
the	O
Nintendo	B-Operating_System
64	I-Operating_System
serial	O
bus	O
,	O
the	B-Operating_System
Dreamcast	I-Operating_System
Maple	O
Bus	O
or	O
USB	B-Protocol
.	O
</s>
<s>
These	O
buses	O
tend	O
to	O
be	O
more	O
modular	O
and	O
can	O
already	O
support	O
more	O
than	O
one	O
device	O
per	O
port	O
,	O
making	O
the	O
multitap	B-Device
little	O
more	O
than	O
a	O
hub	O
.	O
</s>
