User's Manual

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
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12.2.7. COLOR_BLT
COLOR_BLT is the simplest BLT operation. It performs a color fill to the destination (with a possible
ROP). The only operand is the destination operand, which is written dependent on the raster operation.
The solid pattern color is stored in the pattern background register.
• This instruction is optimized to run at the maximum memory write bandwidth.
• Only a positive destination pitch is allowed.
• The typical Raster operation code = F0 which performs a copy of the pattern background register to
the destination.
DWord Bit Description
0 = BR00 31:29 Client : 02h – 2D Processor
28:22 Instruction Target (Opcode) : 40h
21:05 Reserved. Must be Zero
04:00 Dword Length : 03h
1 = BR13 31 Solid pattern select: (1 = solid pattern). Must be 1.
30:27 Reserved. Must be Zero
26 Must Be One (‘1’).
25:24 Color Depth:
00 = 8 bit color
01 = 16 bit color
10 = 24 bit color
11 = Reserved
23:16 Raster Operation:
15:00 Destination Pitch (positive): (13:00 are implemented in Intel
®
810 chipset)
2 = BR14 31:16 Destination Height (in scan lines): (28:16 are implemented in Intel
®
810 chipset)
15:00 Destination Width (in bytes): (12:00 are implemented in Intel
®
810 chipset)
3 = BR09 31:00 Destination Address: Address of the first byte to be written
(25:00 are implemented in Intel
®
810 chipset)
4 = BR16 31:24 Reserved. Must be Zero
23:00 Solid Pattern Color: