Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
337
17.5.
VBLANK—Vertical Blank Register
Address Offset:
60010h
Default Value:
00000000h
Access: Read/Write
Size: 32
Size: 32
bits
31
28 27
16
Reserved Vertical
Blank
End
15
12 11
0
Reserved Vertical
Blank
Start
Bit Description
31:28
Reserved.
27:16
Vertical Blank End. Vertical blank end expressed in terms of absolute line number relative to the
vertical active display start. Note: Vertical blank will be deasserted when vertical total occurs
irrespective of what is programmed in vertical blank end.
vertical active display start. Note: Vertical blank will be deasserted when vertical total occurs
irrespective of what is programmed in vertical blank end.
15:12
Reserved.
11:0
Vertical Blank Start. Vertical blank start expressed in terms of absolute line number relative to the
vertical active display start.
vertical active display start.