![](http://datasheet.mmic.net.cn/390000/M37225ECSP_datasheet_16817037/M37225ECSP_67.png)
67
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37225M6–XXXSP, M37225M8–XXXSP
M37225ECSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
1st character
2nd character
3rd character
:
16th character
17st character
:
24nd character
1st character
2nd character
3rd character
:
16th character
17st character
:
24nd character
Note:
The 120-byte addresses corresponding to the character code “07F
16
,”
“080
16
” and “17F
16
” in OSD ROM are the test data storing area. Set
“FF
16
” to the area. (We stores the test data to this area and the different
data from “FF
16
” is stored for the actual products.)
<The test data storing area>
11000
16
+ (4 + 2n)
100
16
+ FE
16
to 11000
16
+ (5 + 2n)
100
16
+ 01
16
15000
16
+ (4 + 2n)
100
16
+ FE
16
and 15000
16
+ (4 + 2n)
100
16
+ 01
16
(n = 0 to 19)
Address area
addresses 114FE
16
to 11501
16
addresses 116FE
16
to 11701
16
…
addresses 138FE
16
to 13901
16
addresses 13AFE
16
to 13B01
16
addresses 154FE
16
and 154FF
16
addresses 156FE
16
and 156FF
16
…
addresses 178FE
16
and 178FF
16
addresses 17AFE
16
and 17AFF
16
OSD RAM (addresses 0800
16
to 0877
16
)
The OSD RAM for character is allocated at addresses 0800
16
to
0847
16
, 0850
16
to 0857
16
, 0860
16
to 0867
16
, 0870
16
to 0877
16
, and
is divided into a display character code specification part 0870
16
to
0877
16
, and color/attribute specification part for each block. Tables
8.10.3 shows the contents of the OSD RAM.
For example, to display 1 character position (the left edge) in block 1,
write the character code in address 0800
16
, write color/attribute code
at 0810
16
.
The structure of the OSD RAM is shown in Figure 8.10.18.
Table 8.10.3 Contents of OSD RAM
Block
Character Code Specification
Color/Attribute Code Specification
Block 1
Display Position (from left)
Block 2
0800
16
0801
16
0802
16
:
080F
16
0840
16
:
0847
16
0820
16
0821
16
0822
16
:
082F
16
0860
16
:
0867
16
0810
16
0811
16
0812
16
:
081F
16
0850
16
:
0857
16
0830
16
0831
16
0832
16
:
083F
16
0870
16
:
0877
16