Intel 815 Reserved for address bits 31 downto, Tile walk, Fence size, Fence Pitch, Fence Valid

Models: 815

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Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

Bit

 

Description

 

 

31:26

Reserved for address bits 31 downto 26

 

 

25:19

Fence Lower Bound : Memory address bits 25 downto 19 (Must be size aligned)

 

 

18:15

Reserved

 

 

14:13

Reserved: MBZ (“00”)

 

 

12

Tile walk

 

0 = X Major

 

1= Y Major.

 

 

11

Reserved

 

 

10:8

Fence size:

 

000

= 512 KB

 

001

= 1 MB

 

010

= 2 MB

 

011

= 4 MB

 

100

= 8 MB

 

101

= 16 MB

 

110

= 32 MB

 

111

= Reserved.

 

 

7

Reserved

 

 

6:4

Fence Pitch:

 

000

= 1 Tile

 

001

= 2 Tiles

 

010

= 4 Tiles

 

011

= 8 Tiles

 

100

= 16 Tiles

 

101

= 32 Tiles

 

110

= Reserved

 

111

= Reserved

 

 

3:1

Reserved

 

 

0

Fence Valid:

 

0 = Unused

 

1 = Valid

 

 

 

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Image 302
Intel 815 manual Reserved for address bits 31 downto, Tile walk, Fence size, Fence Pitch, Fence Valid