<s>
A	O
number	O
of	O
models	O
of	O
Sony	O
's	O
PlayStation	B-Device
(	O
PS	O
)	O
video	B-Application
game	I-Application
console	I-Application
were	O
produced	O
from	O
1994	O
to	O
2006	O
.	O
</s>
<s>
Most	O
revisions	O
of	O
the	O
PlayStation	B-Device
were	O
made	O
to	O
fix	O
known	O
hardware	O
issues	O
or	O
lower	O
production	O
costs	O
and	O
time	O
,	O
while	O
others	O
featured	O
substantial	O
external	O
changes	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
went	O
through	O
a	O
number	O
of	O
variants	O
during	O
its	O
production	O
run	O
,	O
each	O
accompanied	O
by	O
a	O
change	O
in	O
the	O
part	O
number	O
.	O
</s>
<s>
Inconsistent	O
numbering	O
was	O
also	O
used	O
for	O
the	O
Yaroze	B-Device
machines	O
,	O
which	O
were	O
based	O
on	O
SCPH-5000	O
and	O
later	O
1001/1002	O
hardware	O
,	O
but	O
numbered	O
DTL-H3000	O
,	O
DTL-H3001	O
,	O
and	O
DTL-H3002	O
.	O
</s>
<s>
Also	O
,	O
the	O
first	O
models	O
(	O
DTL-H1000	O
,	O
DTL-H1001	O
,	O
DTL-H1002	O
)	O
had	O
problems	O
with	O
printf	B-Language
function	O
and	O
developers	O
had	O
to	O
use	O
another	O
function	O
instead	O
.	O
</s>
<s>
The	O
PAL	O
region	O
consoles	O
from	O
SCPH-1002	O
up	O
to	O
SCPH-5552	O
were	O
different	O
from	O
the	O
systems	O
released	O
in	O
other	O
regions	O
in	O
that	O
they	O
had	O
a	O
different	O
menu	O
design	O
;	O
a	O
grey	O
blocked	O
background	O
with	O
square	O
icons	O
for	O
the	O
Memory	O
Card	O
(	O
an	O
icon	O
showing	O
a	O
PlayStation	B-Device
with	O
2	O
memory	O
cards	O
inserted	O
)	O
and	O
CD	O
player	O
(	O
an	O
icon	O
with	O
musical	O
keyboards	O
)	O
menus	O
.	O
</s>
<s>
Originally	O
,	O
the	O
PlayStation	B-Device
was	O
supposed	O
to	O
have	O
provision	O
on	O
Video	O
CD	O
support	O
,	O
but	O
this	O
feature	O
was	O
only	O
included	O
on	O
the	O
Asian	O
exclusive	O
SCPH-5903	O
model	O
.	O
</s>
<s>
The	O
final	O
revision	O
to	O
the	O
original	B-Device
PlayStation	I-Device
was	O
the	O
SCPH-900x	O
series	O
,	O
released	O
in	O
May	O
1999	O
.	O
</s>
<s>
The	O
removal	O
of	O
the	O
parallel	O
port	O
is	O
partially	O
due	O
to	O
the	O
fact	O
that	O
Sony	O
did	O
not	O
release	O
an	O
official	O
add-on	O
for	O
it	O
;	O
it	O
was	O
used	O
for	O
cheat	O
cartridges	O
,	O
and	O
for	O
the	O
parallel	O
port	O
to	O
defeat	O
the	O
regional	O
lockouts	O
and	O
copy	B-Application
protection	I-Application
.	O
</s>
<s>
The	O
PlayStation	B-Device
Link	I-Device
Cable	I-Device
connection	O
was	O
supported	O
by	O
only	O
a	O
handful	O
of	O
games	O
.	O
</s>
<s>
The	O
only	O
real	O
difference	O
is	O
that	O
the	O
CD	O
controller	O
was	O
reprogrammed	O
so	O
that	O
it	O
would	O
identify	O
any	O
disc	O
that	O
had	O
a	O
data	O
track	O
as	O
being	O
"	O
licensed	O
"	O
,	O
rather	O
than	O
requiring	O
the	O
region	O
code	O
in	O
the	O
lead-in	O
that	O
was	O
present	O
on	O
pressed	O
PlayStation	B-Device
CDs	O
.	O
</s>
<s>
The	O
reason	O
for	O
the	O
two	O
different	O
case	O
colors	O
was	O
a	O
hardware	O
change	O
that	O
Sony	O
had	O
made	O
fairly	O
early	O
in	O
the	O
PlayStation	B-Device
production	O
cycle	O
-	O
the	O
original	O
machines	O
were	O
built	O
using	O
Rev	O
.	O
</s>
<s>
In	O
1997	O
,	O
Sony	O
released	O
a	O
version	O
of	O
the	O
PlayStation	B-Device
called	O
the	O
Net	B-Device
Yaroze	I-Device
.	O
</s>
<s>
It	O
only	O
came	O
via	O
mail	O
order	O
and	O
was	O
more	O
expensive	O
than	O
the	O
regular	O
PlayStation	B-Device
( $750	O
instead	O
of	O
$299	O
for	O
the	O
original	B-Device
PlayStation	I-Device
)	O
.	O
</s>
<s>
It	O
had	O
a	O
matte	O
black	O
finish	O
instead	O
of	O
the	O
usual	O
gray	O
,	O
and	O
most	O
importantly	O
,	O
came	O
with	O
tools	O
and	O
instructions	O
that	O
allowed	O
a	O
user	O
to	O
be	O
able	O
to	O
program	O
PlayStation	B-Device
games	O
and	O
applications	O
without	O
the	O
need	O
for	O
a	O
full	O
development	O
unit	O
,	O
which	O
was	O
more	O
expensive	O
than	O
a	O
normal	O
PlayStation	B-Device
(	O
official	O
development	O
kits	O
cost	O
around	O
$	O
5,000	O
.00	O
at	O
the	O
time	O
)	O
.	O
</s>
<s>
The	O
Net	B-Device
Yaroze	I-Device
lacked	O
many	O
of	O
the	O
features	O
the	O
full	O
developer	O
suite	O
provided	O
,	O
lacking	O
the	O
on-demand	O
support	O
and	O
code	O
libraries	O
that	O
licensed	O
developers	O
had	O
.	O
</s>
<s>
Programmers	O
were	O
also	O
limited	O
by	O
the	O
2	O
MB	O
of	O
total	O
game	O
space	O
that	O
the	O
Net	B-Device
Yaroze	I-Device
allowed	O
.	O
</s>
<s>
It	O
was	O
unique	O
in	O
that	O
it	O
was	O
the	O
only	O
officially	O
retailed	O
PlayStation	B-Device
with	O
no	O
regional	O
lockout	O
;	O
it	O
would	O
play	O
games	O
from	O
any	O
territory	O
.	O
</s>
<s>
It	O
would	O
not	O
however	O
play	O
CD-R	O
discs	O
,	O
so	O
it	O
was	O
not	O
possible	O
to	O
create	O
self-booting	O
Yaroze	B-Device
games	O
without	O
a	O
modified	O
PlayStation	B-Device
.	O
</s>
<s>
The	O
PS	O
One	O
(	O
officially	O
stylized	O
as	O
PS	O
one	O
and	O
alternatively	O
spelled	O
PSOne	O
and	O
PSone	O
)	O
is	O
a	O
smaller	O
,	O
redesigned	O
version	O
of	O
the	O
original	B-Device
PlayStation	I-Device
platform	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
7	O
July	O
2000	O
,	O
and	O
went	O
on	O
to	O
outsell	O
all	O
other	O
consoles	O
throughout	O
the	O
remainder	O
of	O
the	O
year	O
—	O
including	O
Sony	O
's	O
own	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
PS	O
One	O
is	O
fully	O
compatible	O
with	O
all	O
PlayStation	B-Device
software	O
,	O
but	O
compatibility	O
with	O
peripherals	O
may	O
vary	O
.	O
</s>
<s>
In	O
2002	O
,	O
Sony	O
released	O
a	O
version	O
with	O
a	O
LCD	B-Device
screen	I-Device
and	O
an	O
adaptor	O
(	O
though	O
it	O
did	O
not	O
have	O
a	O
battery	O
:	O
it	O
is	O
powered	O
by	O
plugging	O
the	O
adaptor	O
in	O
a	O
main	O
socket	O
,	O
or	O
in	O
a	O
car	O
)	O
;	O
it	O
was	O
called	O
the	O
Combo	O
pack	O
.	O
</s>
<s>
The	O
included	O
LCD	B-Device
screen	I-Device
includes	O
a	O
headphone	O
jack	O
(	O
for	O
headphones	O
or	O
other	O
audio	O
connection	O
)	O
and	O
an	O
AV	O
mini	O
jack	O
for	O
connecting	O
camcorders	O
or	O
other	O
devices	O
.	O
</s>
<s>
The	O
LCD	B-Device
screen	I-Device
was	O
also	O
sold	O
separately	O
as	O
a	O
standalone	O
add-on	O
.	O
</s>
<s>
A/B	O
PU-7	O
NTSC-J	O
rowspan	O
=	O
"	O
8	O
"	O
rowspan	O
=	O
"	O
24	O
"	O
colspan	O
=	O
"	O
2	O
"	O
FMV	B-Application
skipping	O
issues.S-Video	O
direct	O
out.Dynamic	O
lighting	O
and	O
color	O
banding	O
issues.Overheating	O
and	O
CD	O
drive	O
burnout	O
issues	O
.	O
</s>
<s>
B/CPU	O
-8	O
,	O
PU-7	O
(	O
early	O
December	O
1995	O
and	O
prior	O
)	O
NTSC-U/C	O
FMV	B-Application
skipping	O
issues.S-Video	O
direct	O
out	O
removed.Overheating	O
and	O
CD	O
drive	O
burnout	O
issues.Based	O
on	O
the	O
SCPH-3000	O
series	O
.	O
</s>
<s>
C	O
PU-8	O
SCPH-5001	O
3.0	O
(	O
1996-11-18	O
)	O
PU-18	O
NTSC-U/C	O
rowspan	O
=	O
"	O
6	O
"	O
Minor	O
FMV	B-Application
skipping	O
issues.CD-ROM	O
drive	O
re-located	O
on	O
right	O
side	O
of	O
CD	O
bay	O
to	O
prevent	O
overheating	O
issues	O
with	O
the	O
CD	O
drive	O
.	O
</s>
<s>
Digital	O
servo	O
for	O
focus/tracking	O
introduced	O
,	O
manual	O
gain/bias	O
calibration	O
removed.Lens	O
carriage	O
reinforced	O
and	O
power	O
simplified	O
,	O
making	O
FMV	B-Application
skipping	O
issues	O
less	O
prominent	O
.	O
</s>
<s>
SCPH-5903:Designed	O
specifically	O
for	O
the	O
Southeast	O
Asian	O
market	O
,	O
this	O
is	O
the	O
only	O
model	O
capable	O
of	O
playing	O
Video	O
CD	O
movies	O
and	O
includes	O
an	O
additional	O
security	O
chip	O
to	O
curb	O
piracy	O
rampant	O
in	O
some	O
Southeast	O
Asian	O
countries.This	O
model	O
also	O
has	O
RCA	O
sockets	O
(	O
as	O
well	O
as	O
the	O
RFU	O
power	O
connector	O
)	O
,	O
like	O
earlier	O
PlayStation	B-Device
models	I-Device
.	O
</s>
<s>
SCPH-5500May	O
1997	O
-	O
April	O
1998	O
3.0	O
(	O
1996-09-09	O
)	O
NTSC-J	O
SCPH-5501	O
3.0	O
(	O
1996-11-18	O
)	O
NTSC-U/C	O
SCPH-5502	O
3.0	O
(	O
1997-01-06	O
)	O
PAL	O
SCPH-5503	O
3.0	O
(	O
1996-11-18	O
)	O
NTSC-J	O
SCPH-5552Unknown	O
3.0	O
(	O
1997-01-06	O
)	O
PAL	O
SCPH-5903	O
Original	O
(	O
White	O
)	O
2.2	O
(	O
1995-12-04	O
)	O
PU-16NTSC-J	O
SCPH-7000April	O
1998	O
-	O
August	O
1998Original	O
(	O
Grey	O
)	O
4.0	O
(	O
1997-08-18	O
)	O
PU-20	O
,	O
PU-18	O
(	O
April	O
1998	O
)	O
rowspan	O
=	O
"	O
9	O
"	O
Minor	O
FMV	B-Application
skipping	O
issues	O
.	O
</s>
<s>
DualShock	B-Device
now	O
standard.Introduction	O
of	O
Sound	O
Scope	O
.	O
</s>
<s>
SCPH-7000W:Available	O
in	O
Midnight	O
Blue	O
as	O
a	O
promotional	O
item	O
to	O
commemorate	O
the	O
10	O
millionth	O
PlayStation	B-Device
sold	O
,	O
this	O
is	O
a	O
Japanese-region	O
console	O
that	O
has	O
a	O
unique	O
BIOS	O
based	O
on	O
the	O
USA	O
NTSC-U/C	O
version	O
that	O
allowed	O
imported	O
games	O
from	O
any	O
region	O
to	O
be	O
played	O
.	O
</s>
<s>
The	O
CD	O
drive	O
now	O
used	O
a	O
metal	O
beam	O
type	O
instead	O
of	O
plastic	O
,	O
fixing	O
FMV	B-Application
skipping	O
issues	O
and	O
creating	O
overall	O
longer	O
CD	O
drive	O
longevity.The	O
number	O
of	O
memory	O
chips	O
and	O
CD-ROM	O
controllers	O
were	O
reduced	O
,	O
other	O
components	O
were	O
simplified.PU-22	O
motherboards	O
and	O
after	O
have	O
improved	O
AV	O
video	O
output	O
and	O
sharper	O
graphics	O
compared	O
to	O
the	O
700x	O
and	O
prior	O
.	O
</s>
<s>
Debugger.DTL-H1000	O
,	O
DTL-H1001	O
,	O
DTL-H1002:Contains	O
printf	B-Language
bugs	O
.	O
</s>
<s>
C	O
NTSC-J	O
DTL-H1201	O
NTSC-U/C	O
DTL-H1202	O
PAL	O
DTL-H3000Original	O
(	O
Black	O
)	O
2.2	O
(	O
04/12/95	O
)	O
NTSC-J	O
rowspan	O
="3	O
"	O
Net	B-Device
Yaroze	I-Device
hobbyist	O
development	O
system	O
.	O
</s>
<s>
The	O
last	O
digit	O
of	O
the	O
PlayStation	B-Device
model	O
number	O
denotes	O
the	O
region	O
in	O
which	O
it	O
was	O
sold	O
:	O
</s>
<s>
The	O
first	O
batch	O
of	O
PlayStations	B-Device
used	O
a	O
KSM-440AAM	O
laser	O
unit	O
whose	O
case	O
and	O
all	O
movable	O
parts	O
were	O
completely	O
made	O
out	O
of	O
plastic	O
.	O
</s>
<s>
Sony	O
first	O
addressed	O
the	O
problem	O
by	O
making	O
the	O
tray	O
out	O
of	O
die-cast	O
metal	O
,	O
and	O
additionally	O
also	O
placed	O
the	O
laser	O
unit	O
farther	O
away	O
from	O
the	O
power	O
supply	O
on	O
later	O
models	O
of	O
the	O
PlayStation	B-Device
.	O
</s>
<s>
Some	O
units	O
,	O
particularly	O
the	O
early	O
100x	O
models	O
,	O
would	O
be	O
unable	O
to	O
play	O
FMV	B-Application
or	O
music	O
correctly	O
,	O
resulting	O
in	O
skipping	O
or	O
freezing	O
.	O
</s>
<s>
In	O
more	O
extreme	O
cases	O
the	O
PlayStation	B-Device
would	O
only	O
work	O
correctly	O
when	O
turned	O
onto	O
its	O
side	O
or	O
upside	O
down	O
.	O
</s>
