AMD Geode™ LX Processors Data Book
373
Display Controller Register Descriptions
33234H
6.6.19.30 Attribute Index State
6.6.20
VGA Graphics Controller Registers
The graphics controller registers are accessed by writing an index value to the Graphics Controller Index register (Index
Address 3CEh) and reading or writing the register using the Graphics Controller Data register (Data Address 3CFh).
6.6.20.1 VGA Graphics Controller Index
Index
26h
Type
RO
Reset Value
xxh
Attribute Index State Register Bit Descriptions
Bit
Name
Description
7:6
RSVD
Reserved.
5:0
ATT_IN_VA
Attribute Index Value.
This read only value indicates the value of Attribute Index regis-
ter bits [5:0] (Index 3C0h).
Table 6-56. Graphics Controller Registers Summary
Index
Type
Register
Reset Value
Reference
--
R/W
VGA Graphics Controller Index
xxh
Page 373
--
R/W
VGA Graphics Controller Data
xxh
Page 374
00h
R/W
VGA Set/Reset
xxh
Page 374
01h
R/W
VGA Enable Set/Reset
xxh
Page 374
02h
R/W
VGA Color Compare
xxh
Page 375
03h
R/W
VGA Data Rotate
xxh
Page 375
04h
R/W
VGA Read Map Select
xxh
Page 376
05h
R/W
VGA Graphics Mode
xxh
Page 376
06h
R/W
VGA Miscellaneous
xxh
Page 377
07h
R/W
VGA Color Don’t Care
xxh
Page 378
08h
R/W
VGA Bit Mask
xxh
Page 378
Index Address
3CEh
Type
R/W
Reset Value
xxh
VGA Graphics Controller Index Register Bit Descriptions
Bit
Name
Description
7:4
RSVD
Reserved.
3:0
INDEX
Index.
Summary of Contents for Geode LX 600
Page 14: ...14 AMD Geode LX Processors Data Book Overview 33234H...
Page 20: ...20 AMD Geode LX Processors Data Book Architecture Overview 33234H...
Page 44: ...44 AMD Geode LX Processors Data Book Signal Definitions 33234H...
Page 88: ...88 AMD Geode LX Processors Data Book GLIU Register Descriptions 33234H...
Page 618: ...618 AMD Geode LX Processors Data Book Electrical Specifications 33234H...