GXM Datasheet, PDF (150/244 Pages) National Semiconductor (TI) – Geode™ GXm Processor Integrated x86 Solution with MMX Support

Integrated Functions (Continued)
4.5.13 Color Registers
These registers are used in 8 BPP display mode with an
external RAMDAC for passing cursor and border color
indices to the palette in the RAMDAC. For the flat panel
color translation, the cursor and border color data is
loaded into palette extensions as described in the Palette
Access Registers section.
The Color Registers group consists of two 32-bit registers
located at GX_BASE+8360h-8368h. These registers are
described below and Table 4-34 gives their bit formats.
• Display Controller Cursor Color
(DC_CURSOR_COLOR)
- Contains the 8-bit indices for the cursor colors.
• Display Controller Border Color
(DC_BORDER_COLOR)
Contains the 8-bit index for the border or overscan color.
Bit
Name
GX_BASE+8360h-8363h
31:16
RSVD
15:8
CURS_CLR_1
7:0
CURS_CLR_0
GX_BASE+8364h-8367h
GX_BASE+8368h-836Bh
31:8
RSVD
7:0
BORDER_CLR
GX_BASE+836Ch-836Fh
Table 4-34. Display Controller Color Registers
Description
DC_CURSOR_COLOR Register (R/W)
Default Value = xxxxxxxxh
Reserved: Set to 0.
Cursor Color 1: This is the 8-bit index to the external palette for the cursor color 1. It should point to
a reserved or static color.
Cursor Color 0: This is the 8-bit index to the external palette for the cursor color 0. It should point to
a reserved or static color.
Reserved
Default Value = 00000000h
DC_BORDER_COLOR Register (RO)
Default Value = xxxxxxxxh
Reserved: Set to 0.
Border Color: This is the 8-bit index to the external palette for the border color. It should point to a
reserved or static color.
Reserved
Default Value = 00000000h
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