Справочник Пользователя для AMD LX 900@1.5W
AMD Geode™ LX Processors Data Book
363
Display Controller Register Descriptions
33234H
6.6.19.2 CRTC Data
6.6.19.3 Horizontal Total
6.6.19.4 Horizontal Display Enable End
6.6.19.5 Horizontal Blank Start
Data Address
3B5h or 3D5h
Type
R/W
Reset Value
00h
CRTC Data Register Bit Descriptions
Bit
Name
Description
7
RSVD
Reserved.
6:0
DATA
Data.
Index
00h
Type
R/W
Reset Value
00h
Horizontal Total Register Bit Descriptions
Bit
Name
Description
7:0
H_TOTAL
Horizontal Total. This value specifies the number of character clocks per horizontal
scan line minus 5. It determines the horizontal line rate/period.
scan line minus 5. It determines the horizontal line rate/period.
Index
01h
Type
R/W
Reset Value
00h
Horizontal Display Enable End Register Bit Descriptions
Bit
Name
Description
7:0
H_DISP_END
Horizontal Display Enable End. This value specifies the number of displayed charac-
ters minus 1. It determines the width of the horizontal display enable signal.
ters minus 1. It determines the width of the horizontal display enable signal.
Index
02h
Type
R/W
Reset Value
00h
Horizontal Blank Start Register Bit Descriptions
Bit
Name
Description
7:0
H_BLANK_ST
Horizontal Blank Start. This value specifies the character position on the line where the
horizontal blanking signal goes active.
horizontal blanking signal goes active.