MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
2 RAM for OSD (addresses 080016 to 0FF716)
Note: For the OSD mode block with dot size of 1.5TC ✕ 1/2H and
1.5TC ✕ 1H, the 3nth (n = 1 to 13) character is skipped as
compared with ordinary block✽. Accordingly, maximum 27 char-
acters (the right 1/3 part of the 27th's character area is not
displayed) are only displayed in 1 block. The RAM data for the
3nth character does not effect the display. Any character data
can be stored here (refer to Figure 81).
The RAM for OSD is allocated at addresses 080016 to 0FF716, and
is divided into a display character code specification part, color code
1 specification part, and color code 2 specification part for each block.
Table 13 shows the contents of the RAM for OSD.
For example, to display 1 character position (the left edge) in block
1, write the character code in address 080016, write color code 1 at
084016, and write color code 2 at 082816.
Mask version has maximum 24 characters in 1 block when
programming.
The structure of the RAM for OSD is shown in Figure 82.
✽ Blocks with dot size of 1TC ✕ 1/2H and 1TC ✕ 1H, or blocks
on the layer 1
Table 13. Contents of OSD RAM
Display Position (from left)
1st character
Character Code Specification
080016
Color Code 1 Specification
084016
Color Code 2 Specification
082816
Block
2nd character
080116
:
084116
:
082916
:
:
24th character
081716
085716
083F16
Block 1
25th character
:
081816
:
085816
:
086816
:
39th character
40th character
1st character
082616
082716
088016
086616
086716
08C016
087616
087716
08A816
2nd character
088116
:
08C116
:
08A916
:
:
24th character
089716
08D716
08BF16
Block 2
25th character
:
0E9816
:
08D816
:
08E816
:
39th character
40th character
1st character
08A616
08A716
090016
08E616
08E716
094016
08F616
08F716
092816
2nd character
090116
:
094116
:
092916
:
:
24th character
091716
095716
093F16
Block 3
25th character
:
091816
:
095816
:
096816
:
39th character
40th character
1st character
092616
092716
098016
096616
096716
09C016
097616
097716
09A816
2nd character
098116
:
09C116
:
09A916
:
:
24th character
099716
09D716
09BF16
Block 4
25th character
:
099816
:
08D816
:
09E816
:
39th character
40th character
1st character
09A616
09A716
0A0016
09E616
09E716
0A4016
09F616
09F716
0A2816
2nd character
0A0116
:
0A4116
:
0A2916
:
:
24th character
0A1716
0A5716
0A3F16
Block 5
25th character
:
0A1816
:
0A5816
:
0A6816
:
39th character
40th character
0A2616
0A2716
0A6616
0A6716
0A7616
0A7716
80
RENESAS [ RENESAS TECHNOLOGY CORP ]
