User's Manual

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
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15.4.9.2. SCLRKVL—Source Color Key Value Low Register
Memory Address Offset: 5Ch (R/W)
On-chip Reg. Mem Addr Offset: 3015Ch (RO; debug path)
Default Value: 00h
Access: see address offset above
Size: 32 bits
31 24 23 0
Reserved Source Key value Low
Bit Description
31:24 Reserved.
23:0 Source Key Value Low. In the format of the source specifies the low end (greater than or equal) of the
range of excluded source pixel data. Software sets bits that it does not want to be included within the
comparison to 0.
1 = Included in comparison
0 = Not included in comparison
15.4.9.3. SCLRKM—Source Color Key Mask Register
Memory Address Offset: 60h (R/W)
On-chip Reg. Mem Addr Offset: 30160h (RO; debug path)
Default Value: 00h
Access: see address offset above
Size: 32 bits
31 30 27 26 24
SourceCo
nst α
Blend
Enable
Reserved Source Key Mask Enables
23 16 15 8 7 0
Constant α
Red<7:0>
Constant α
Green <7:0>
Constant α
Blue<7:0>