ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 262

• Manufacturer Part Number: ALXD800EEXJ2VD
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

6.4.2.9
GP Memory Offset 18h
Type
Reset Value
In solid pattern mode, the pattern hardware is disabled and GP_PAT_COLOR_0 is selected as the input to the raster oper-
ation.
In monochrome pattern mode, GP_PAT_COLOR_0 and GP_PAT_COLOR_1 are used for expanding the monochrome pat-
tern into color. A clear bit in the pattern is replaced with the color stored in GP_PAT_COLOR_0 and a set bit in the pattern
is replaced with the color stored in GP_PAT_COLOR_1.
In color pattern mode, these registers each hold part of the pattern according to Table 6-30.
These registers should only be written after setting the BPP/FMT and PM bits in GP_RASTER_MODE (GP Memory Offset
38h[31:28, 9:8]), since the value written may be replicated if necessary to fill the register. If the pattern is color, no replica-
tion is performed and the data is written to the registers exactly as it is received. If the pattern is monochrome, the write
data is expanded if the color depth is less than 32 bpp. Thus a write to these registers in 8-bpp monochrome pattern mode
takes the least significant data byte and replicates it in the four bytes of the register. In 16-bpp monochrome pattern mode,
the least significant two bytes are replicated in the upper half of the register. A read returns the replicated data.
262
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:0
Bit
GP_PAT_COLOR_0
GP_PAT_COLOR_1
GP_PAT_COLOR_2
GP_PAT_COLOR_3
GP_PAT_COLOR_4
GP_PAT_COLOR_5
Pattern Color (GP_PAT_COLOR_x)
Name
PAT_COLOR_x
Register
1Ch
20h
24h
28h
2Ch
R/W
00000000h
33234C
GP_PAT_COLOR_0
GP_PAT_COLOR_1
GP_PAT_COLOR_2
GP_PAT_COLOR_3
GP_PAT_COLOR_4
GP_PAT_COLOR_5
Table 6-30. PAT_COLOR Usage for Color Patterns
Description
Pattern Color x.
Mono pattern mode: Pattern color for expansion.
Color pattern mode: Color pattern.
GP_PAT_COLOR_x Bit Descriptions
GP_PAT_COLOR_x Register Map
Line 1, pixels 3-0
Line 1, pixels 7-4
Line 2, pixels 3-0
Line 2, pixels 7-4
Line 3, pixels 3-0
Line 3, pixels 7-4
8 bpp Mode
PAT_COLOR_x
Line 0, pixels 5-4
Line 0, pixels 7-6
Line 1, pixels 1-0
Line 1, pixels 3-2
Line 1, pixels 5-4
Line 1, pixels 7-6
16 bpp Mode
Graphics Processor Register Definitions
AMD Geode™ LX Processors Data Book
9
8
7
6
5
32 bpp Mode
Line 0, pixel 2
Line 0, pixel 3
Line 0, pixel 4
Line 0, pixel 5
Line 0, pixel 6
Line 0, pixel 7
4
3
2
1
0