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Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
334
17.2. HBLANK—Horizontal Blank Register
Address Offset: 60004h
Default Value: 00000000h
Access: Read/Write
Size: 32 bits
31 28 27 16
Reserved Horizontal Blank End
15 12 11 0
Reserved Horizontal Blank Start
Bit Description
31:28 Reserved.
27:16 Horizontal Blank End. Horizontal blank end expressed in terms of absolute pixel number relative to
the horizontal active display start. Note: An asserted HBlank will be deasserted when HTotal occurs
irrespective of what is programmed in HBlank end
15:12 Reserved.
11:0 Horizontal Blank Start. Horizontal blank start expressed in terms of absolute pixel number relative to
the horizontal active display start.