MITSUBISHI MICROCOMPUTERS
M37207MF-XXXSP/FP, M37207M8-XXXSP
M37207EFSP/FP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
and ON-SCREEN DISPLAY CONTROLLER
58
(5) Color Registers
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 CRT display
RAM. There are 4 color outputs; R, G, B and I. By using a combina-
tion of these outputs, it is possible to set 2
4
–1 (when no output) = 15
colors. However, since only 4 color registers are available, up to 4
colors can be disabled at one time.
R, G, B and I outputs are set by using bits 0 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. Fig-
ure 54 shows the structure of the color register.
Fig. 54. Color Register n
b7 b6 b5 b4 b3 b2 b1 b0
Color register n (CO0 to CO3) (n = 0 to 3) [Addresses 00E6
16 to 00E916]
B Name Functions
After reset
R
W
Color Register n
0 0
1 B signal output
selection bit (COn1)
0 : No character is output
1 : Character is output
0
2
G signal output
selection bit (COn2)
0 : No character is output
1 : Character is output
0
3 R signal output
selection bit (COn3)
0 : No character is output
1 : Character is output
0
4
B signal output (background)
selection bit (COn4)
0 : No background color is output
1 : Background color is output
0
5 OUT signal output
control bit (COn5)
0 : Character is output
1 : Blank is output
0
6
G signal output (background)
selection bit (COn6)
0 : No background color is output
1 : Background color is output
0
7
R signal output (background)
selection bit (COn7)
0 : No background color is output
1 : Background color is output
0
(See notes 1,2)
(See notes 1, 2)
Notes 1: When bit 5 = “0” and bit 4 = “1,” there is output same as a character or border output
from the OUT pin.
2: When bit 5 = “0” and bit 4= “0,” there is no output from the OUT pin.
RW
RW
RW
RW
RW
RW
RW
RW
I signal output
selection bit (COn0)
0 : No character is output
1 : Character is output
