Intel 815 manual SWIDQW-Source Width In QWords Register

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

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		Reserved		Y/RGB Source Width in
				QWs				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.
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.

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