GMS84512 Datasheet, PDF (68/123 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTER

GMS 84512 / 84524
3.8.4 OSD DISPLAY RAM ( 2-page, 0200_H ¡-02DF _H )
OSD DISPLAY RAM is storing 3lines¡¿ 22 characters of character address and color,
gives data to character font ROM and output control circuit in order to do OSD output.
When data are input, OSD display RAM separates character address and color and
accesses twice. When data are output, data(10bits) are output once.
If OSD RAM (2page) accessable register PG2R(00FCH) is set "1" instruction of direct page
addressing mode can be used to OSD DISPLAY RAM.
TABLE 3.8.1 Direct Page Access Method
G-Flag = 0
PG2R = 0
G-Flag = 1
PG2R = 1
0 Page
1 Page
2 Page
TABLE 3.8.2 OSD DISPLAY RAM ADDRESS (2-page, 0200_H ¡-02DF _H )
1ST LINE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
CHARACTER 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15
COLOR
80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F 90 91 92 93 94 95
2ND LINE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
CHARACTER 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35
COLOR
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5
3RD LINE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
CHARACTER 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55
COLOR
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5
3RD Line 2'st Character
2
0
BGR
6
0
C6 C5 C4 C3 C2 C1 C0
Color
Black
Red
Green
Yellow
Blue
Purpul
Cyan
White
Color Data
B
G
R
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Character Address ( 128 kinds)
FIG. 3.8.2 OSD DISPLAY RAM and DATA Configuration
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