
M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 73 of 110
REJ03B0134-0100Z
8.11.9 Raster Coloring Function
An entire screen (raster) can be colored by setting CRT port control
register. Since each of the R, G and B pins can be switched to raster
coloring output, 8 raster colors can be obtained.
When the character color/character background color overlaps with
the raster color, the color (R, G, B, OUT1, OUT2), specified for the
character color/character background color, takes priority over the
raster color. This ensures that character color/character background
color is not mixed with the raster color.
An example of raster coloring is shown in Figure 8.11.18.
Fig. 8.11.18 Example of Raster Coloring
H
SYNC
A
'
A
O
U
T
1
R
G
B
:
C
h
a
r
a
c
t
e
r
c
o
l
o
r
“
R
E
D
”
(
R
+
O
U
T
1
+
O
U
T
2
)
:
B
o
r
d
e
r
c
o
l
o
r
“
B
L
A
C
K
”
(
O
U
T
1
+
O
U
T
2
)
:
B
a
c
k
g
r
o
u
n
d
c
o
l
o
r
“
M
A
G
E
N
T
A
”
(
R
+
B
+
O
U
T
1
+
O
U
T
2
)
: Raster color “BLUE” (B + OUT1 + OUT2)
S
i
g
n
a
l
s
a
c
r
o
s
s
A
-
A
'
O
U
T
2
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