Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
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15.4.5.2.
SWIDQW—Source Width In QWords Register
Memory Address Offset:
38h (R/W)
On-chip Reg. Mem Addr Offset:
30138h (RO; debug path)
Default Value:
00h
Access:
see address offset above
Size:
32 bits
31
24 23
16 15
9 8
0
Reserved
UV Source Width in
QWs
Reserved
Y/RGB Source Width in
QWs
Bit Description
31:24
Reserved.
23:16
UV Source Width in QWords. The number of QWs contained in a single line of planar UV source
data. Minimum size is two QWords.
data. Minimum size is two QWords.
15:9
Reserved.
8:0
Y/RGB Source Width in QWords. The number of QWs contained in a single line. In planar modes,
this is the Y source width. Minimum size is two QWords.
this is the Y source width. Minimum size is two QWords.