Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
310
16.1.6. HWS_PGA—Hardware Status Page Address Register
Address Offset:
02080h
Default Value:
1FFFF000h.
Access: Read/Write
Size: 32
Size: 32
bits
Hardware status page physical address. The programmed address should be 4 KB aligned. Bits [11:0] are
hardwired to 0. This Page will be used to report hardware status into system memory as follows.
hardwired to 0. This Page will be used to report hardware status into system memory as follows.
Note: For the GMCH bits 31:29 must be “0”.
31
29
28 12
11 0
Must be 0s
Base Physical Address of Status
Page [28:12]
0s (hardwired)
DWord
Offset
Description
0
Report Interrupt Status Register.
1
Report Low Priority Ring Head Pointer.
2
Report Interrupt Ring Head Pointer.
3
Reserved for other ring.
(1K-1): 4
Can be Written through indexed store DWord instruction.