<s>
The	O
Matsushita	B-Device
JR	I-Device
series	I-Device
was	O
a	O
line	O
of	O
microcomputers	B-Architecture
produced	O
by	O
Matsushita	O
Electric	O
Industrial	O
(	O
now	O
Panasonic	O
)	O
during	O
the	O
1980s	O
.	O
</s>
<s>
Based	O
on	O
the	O
success	O
of	O
the	O
Sharp	B-Operating_System
MZ	I-Operating_System
and	O
NEC	B-Device
PC-8000	I-Device
series	O
,	O
it	O
was	O
an	O
attempt	O
by	O
Matsushita	O
to	O
enter	O
the	O
personal	O
computer	O
market	O
.	O
</s>
<s>
The	O
JR	O
series	O
included	O
four	O
computer	O
models	O
:	O
the	O
JR-100	O
,	O
the	O
JR-200	B-Device
,	O
the	O
JR-300	O
and	O
the	O
JR-800	O
.	O
</s>
<s>
Like	O
the	O
Hitachi	O
Basic	O
Master	O
and	O
Sharp	B-Operating_System
MZ-80	I-Operating_System
,	O
it	O
was	O
a	O
low-performance	O
,	O
low-priced	O
personal	O
computer	O
offering	O
basic	O
semi-graphic	B-Data_Structure
character	I-Data_Structure
based	I-Data_Structure
graphics	I-Data_Structure
,	O
a	O
monochrome	O
display	O
,	O
and	O
minimal	O
sound	O
ability	O
.	O
</s>
<s>
The	O
CPU	B-General_Concept
was	O
an	O
8-bit	O
Panasonic	O
MN1800A	O
NMOS	B-Algorithm
microprocessor	O
(	O
compatible	O
with	O
the	O
Motorola	B-Device
MC6802	I-Device
,	O
a	O
slightly	O
improved	O
version	O
of	O
the	O
Motorola	B-Device
MC6800	I-Device
)	O
running	O
at	O
a	O
slow	O
0.89MHz	O
,	O
and	O
it	O
came	O
with	O
16	O
KB	O
of	O
RAM	O
(	O
expandable	O
to	O
32	O
KB	O
)	O
.	O
</s>
<s>
The	O
JR-200	B-Device
is	O
made	O
of	O
silver	O
grey	O
plastic	O
,	O
and	O
has	O
a	O
black	O
matte	O
area	O
around	O
the	O
chiclet	B-Device
keyboard	I-Device
area	O
.	O
</s>
<s>
It	O
used	O
the	O
same	O
MN1800A	O
CPU	B-General_Concept
as	O
the	O
previous	O
model	O
,	O
but	O
added	O
a	O
second	O
processor	O
,	O
the	O
4-bit	O
MN1544CJR	O
,	O
which	O
is	O
used	O
for	O
I/O	O
and	O
contains	O
128	O
bytes	O
of	O
RAM	O
plus	O
four	O
kilobytes	O
of	O
ROM	O
.	O
</s>
<s>
Creative	B-General_Concept
Computing	I-General_Concept
wrote	O
"	O
The	O
Panasonic	B-Device
JR-200	I-Device
is	O
one	O
of	O
the	O
nicest	O
new	O
computers	O
to	O
make	O
the	O
scene	O
in	O
some	O
time.	O
"	O
</s>
<s>
A	O
version	O
of	O
the	O
JR-200	B-Device
called	O
the	O
Panasonic	B-Device
JR-200U	I-Device
was	O
developed	O
for	O
the	O
North	O
American	O
and	O
European	O
markets	O
and	O
was	O
announced	O
in	O
January	O
1983	O
.	O
</s>
<s>
The	O
JR-300	O
,	O
released	O
in	O
1984	O
,	O
was	O
completely	O
redesigned	O
in	O
comparison	O
with	O
the	O
earlier	O
JR-100	O
and	O
JR-200	B-Device
models	O
.	O
</s>
<s>
The	O
JR-300	O
had	O
a	O
Zilog	B-General_Concept
Z80A	I-General_Concept
CPU	B-General_Concept
as	O
well	O
as	O
a	O
second	O
MN1800A	O
CPU	B-General_Concept
to	O
allow	O
backwards	O
compatibility	O
with	O
the	O
JR-200	B-Device
.	O
</s>
<s>
It	O
was	O
based	O
around	O
a	O
Hitachi	O
HD63A01V	O
CPU	B-General_Concept
(	O
MC6801	B-Device
compatible	O
)	O
running	O
at	O
4.9152	O
MHz	O
,	O
with	O
16	O
KB	O
of	O
RAM	O
,	O
and	O
featured	O
a	O
192x64	O
pixel	O
LCD	B-Device
screen	I-Device
.	O
</s>
<s>
The	O
table	O
below	O
shows	O
the	O
semigraphics	B-Data_Structure
character	B-General_Concept
set	I-General_Concept
available	O
on	O
the	O
Matsushita	B-Device
JR	I-Device
series	I-Device
,	O
as	O
shown	O
on	O
the	O
operations	O
manual	O
.	O
</s>
