參數(shù)資料
型號: M37225M8
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
中文描述: 單芯片8位CMOS微機電壓合成與屏幕顯示控制器
文件頁數(shù): 66/133頁
文件大?。?/td> 1610K
代理商: M37225M8
66
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37225M6–XXXSP, M37225M8–XXXSP
M37225ECSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
(3) Memory for OSD
There are 2 types of memory for OSD : OSD ROM (addresses 11400
16
to 13BFF
16
and 15400
16
to 17AFF
16
) used to specify character dot
data and OSD RAM (addresses 0800
16
to 0877) used to specify the
characters, colors, and attribute. The following describes each type
of memory.
Fig. 8.10.17 Character Font Data Storing Address
OSD ROM (addresses 11400
16
to 13BFF
16
, 15400
16
to 17AFF
16
)
The dot pattern data for OSD characters is stored in the charac-
ter font area in the OSD ROM. To specify the kinds of the char-
acter font, it is necessary to write the character code (based on
OSD ROM address) into the OSD RAM.
The modes are selected by bit 3 of the OSD control register 3 for
each screen.
The character font data storing address is shown in Figure
8.10.17.
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