Intel I7-900 DEKSTOP SPECIFICATION, Техническое описание

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Datasheet 43
Register Description
2.6.2 SAD_PAM456
Register for legacy device 0, function 0 94h-97h address space.
Device: 0
Function: 1
Offset: 44h
Access as a Dword
Bit Type
Reset
Value
Description
21:20 RW 0 PAM6_HIENABLE. 0EC000h-0EFFFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0EC000h to 0EFFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
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.
17:16 RW 0 PAM6_LOENABLE. 0E8000-0EBFFF Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0E8000 to 0EBFFF.
00 = DRAM Disabled: All accesses are directed to ESI.
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.
13:12 RW 0 PAM5_HIENABLE. 0E4000h-0E7FFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0E4000h to 0E7FFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
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.
9:8 RW 0 PAM5_LOENABLE. 0E0000h-0E3FFFh Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0E0000h to 0E3FFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
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.
5:4 RW 0 PAM4_HIENABLE. 0DC000h-0DFFFFh Attribute (HIENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0DC000h to 0DFFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
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.
1:0 RW 0 PAM4_LOENABLE. 0D8000h-0DBFFFh Attribute (LOENABLE).
This field controls the steering of read and write cycles that address the BIOS
area from 0D8000h to 0DBFFFh.
00 = DRAM Disabled: All accesses are directed to ESI.
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.