Intel I7-900 DESKTOP PROCESSOR - DATASHEET VOLUME 2 Datasheet page 42

Device:
Function: 1
Offset:
Access as a Dword
Bit
25:24
21:20
17:16
13:12
9:8
5:4
42
0
40h
Reset
Type
Value
PAM3_LOENABLE. 0D0000h-0D3FFFh Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0D0000h to 0D3FFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
PAM2_HIENABLE. 0CC000h-0CFFFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0CC000h to 0CFFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
PAM2_LOENABLE. 0C8000h-0CBFFFh Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0C8000h to 0CBFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
PAM1_HIENABLE. 0C4000h-0C7FFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0C4000h to 0C7FFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
PAM1_LOENABLE. 0C0000h-0C3FFFh Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0C0000h to 0C3FFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
PAM0_HIENABLE. 0F0000h-0FFFFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0F0000h to 0FFFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
RW 0
01 = Read Only: All reads are sent to DRAM. All writes are forwarded to ESI.
10 = Write Only: All writes are send to DRAM. Reads are serviced by ESI.
11 = Normal DRAM Operation: All reads and writes are serviced by DRAM.
Register Description
Description
Datasheet