384
AMD Geode™ LX Processors Data Book
Display Controller Register Descriptions
33234H
6.6.22.4 Video DAC Palette Mask
6.6.23
VGA Block Extended Registers
The Extended registers are accessed by writing an index value to the CRTC Index register (3B4h or 3D4h) and reading or
writing the register using the CRTC Data register (3B5h or 3D5h). See the description of the I/O Address Select bit in the
Section 6.6.17.1 "VGA Miscellaneous Output" on page 356 for more information on the I/O address of the CRTC registers.
Read Address
3C6h
Write Address
3C6h
Type
R/W
Reset Value
00h
Video DAC Palette Mask Register Bit Descriptions
Bit
Name
Description
7:0
PAL_MSK
Palette Mask.
These bits enable their respective color bits between the final VGA 8-bit
pixel output and the DAC palette. The bits are ANDed with the incoming VGA pixel value
and the result used to address the palette RAM.
Table 6-59. Extended Registers Summary
Index
Type
Register
Reset Value
Reference
0030h
R/W
ExtendedRegisterLock
FFh
Page 385
043h
R/W
(Note 1)
Note 1. R/W when unlocked, RO otherwise (see Section 6.6.23.1 "ExtendedRegisterLock" for details).
ExtendedModeControl
00h
Page 385
044h
R/W
(Note 1)
ExtendedStartAddress
00h
Page 385
047h
R/W
(Note 1)
WriteMemoryAperture
00h
Page 386
048h
R/W
(Note 1)
ReadMemoryAperture
00h
Page 386
060h
R/W
(Note 1)
BlinkCounterCtl (for Sim/Test)
00h
Page 386
061h
R/W
(Note 1)
BlinkCounter (for Sim/Test)
00h
Page 387
070h
R/W
(Note 1)
VGALatchSavRes
00h
Page 387
071h
R/W
(Note 1)
DACIFSavRes
00h
Page 387
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...