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M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 68 of 110
REJ03B0134-0100Z
8.11.5 Color Register
The color of a displayed character can be specified by setting the
color to one of the 4 registers (CO0 to CO3: addresses 00E616 to
00E916) and then specifying that color register with the OSD RAM.
There are 3 color outputs; R, G and B. By using a combination of
these outputs, it is possible to set 8 colors. However, since only 4
color registers are available, up to 4 colors can be disabled at one
time.
R, G and B outputs are set by using bits 1 to 3 in the color register. Bit
5 is used to specify whether a character output or blank output. Bits
4, 6 and 7 are used to specify character background color. Figure
8.11.12 shows the color register.
Fig. 8.11.13 Color Register i
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
C
o
l
o
r
r
e
g
i
s
t
e
r
i
(
C
O
i
)
(
i
=
0
t
o
3
)
[
A
d
d
r
e
s
s
e
s
0
0
E
6
1
6
t
o
0
0
E
9
1
6
]
B
N
ame
F
u
n
c
t
i
o
n
s
A
f
t
e
r
r
e
s
e
t
R
W
C
o
l
o
r
R
e
g
i
s
t
e
r
i
0 0
R
1
G
s
i
gna
l
output se
l
ect
i
on
bit (COi2)
0:
N
o c
h
aracter
i
s output
1: Character is output
0
R
W
2
R
s
i
g
n
a
l
o
u
t
p
u
t
s
e
l
e
c
t
i
o
n
b
i
t
(
C
O
i
3
)
0:
N
o c
h
aracter
i
s output
1: Character is output
R
W
3
B
s
i
g
n
a
l
o
u
t
p
u
t
(
b
a
c
k
g
r
o
u
n
d
)
s
e
l
e
c
t
i
o
n
b
i
t
(
C
O
i
4
)
(
S
e
e
n
o
t
e
1
)
0
:
N
o
b
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
1
:
B
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
R
W
4
O
U
T
1
s
i
g
n
a
l
o
u
t
p
u
t
c
o
n
t
r
o
l
b
i
t
(
C
O
i
5
)
(
S
e
e
n
o
t
e
s
1
,
2
)
0
:
C
h
a
r
a
c
t
e
r
i
s
o
u
t
p
u
t
1
:
B
l
a
n
k
i
s
o
u
t
p
u
t
R
W
5
G
s
i
g
n
a
l
o
u
t
p
u
t
(
b
a
c
k
g
r
o
u
n
d
)
s
e
l
e
c
t
i
o
n
b
i
t
(
C
O
i
6
)
(
S
e
e
n
o
t
e
1
)
0
:
N
o
b
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
1
:
B
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
R
W
6
R
s
i
g
n
a
l
o
u
t
p
u
t
(
b
a
c
k
g
r
o
u
n
d
)
s
e
l
e
c
t
i
o
n
b
i
t
(
C
O
i
7
)
(
S
e
e
n
o
t
e
2
)
0
:
N
o
b
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
1
:
B
a
c
k
g
r
o
u
n
d
c
o
l
o
r
i
s
o
u
t
p
u
t
R
W
7
R
W
B
s
i
g
n
a
l
o
u
t
p
u
t
s
e
l
e
c
t
i
o
n
b
i
t
(
C
O
i
1
)
0
:
N
o
c
h
a
r
a
c
t
e
r
i
s
o
u
t
p
u
t
1
:
C
h
a
r
a
c
t
e
r
i
s
o
u
t
p
u
t
N
ot
hi
ng
i
s ass
i
gne
d
.
Thi
s
bi
t
i
s a wr
i
te
di
sa
bl
e
bi
t.
When this bit is read out, the value is “0.”
N
o
t
e
s
1
:
W
h
e
n
b
i
t
5
=
0
a
n
d
b
i
t
4
=
1
,
t
h
e
r
e
i
s
o
u
t
p
u
t
s
a
m
e
a
s
a
c
h
a
r
a
c
t
e
r
o
r
b
o
r
d
e
r
o
u
t
p
u
t
f
r
o
m
p
i
n
O
U
T
1
.
D
o
n
o
t
s
e
t
b
i
t
5
=
0
a
n
d
b
i
t
4
=
0
.
2
:
W
h
e
n
o
n
l
y
b
i
t
7
=
1
a
n
d
b
i
t
5
0
,
t
h
e
r
e
i
s
o
u
t
p
u
t
f
r
o
m
p
i
n
O
U
T
2
.
0
0
0
0
0
0
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