82801FB Datasheet, PDF (359/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

LPC Interface Bridge Registers (D31:F0)
10.1.25
FWH_DEC_EN1—Firmware Hub Decode Enable Register
(LPC I/F—D31:F0)
Offset Address: D8h–D9h
Default Value: FFCFh
Attribute:
Size:
R/W, RO
16 bits
Bit
Description
FWH_F8_EN — RO. This bit enables decoding two 512-KB Firmware Hub memory ranges, and one
128-KB memory range.
15 ^{0 = Disable}
1 = Enable the following ranges for the Firmware Hub
FFF80000h – FFFFFFFFh
FFB80000h – FFBFFFFFh
FWH_F0_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
14 _{1 = Enable the following ranges for the Firmware Hub:}
FFF00000h – FFF7FFFFh
FFB00000h – FFB7FFFFh
FWH_E8_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
13 _{1 = Enable the following ranges for the Firmware Hub:}
FFE80000h – FFEFFFFh
FFA80000h – FFAFFFFFh
FWH_E0_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
12 _{1 = Enable the following ranges for the Firmware Hub:}
FFE00000h – FFE7FFFFh
FFA00000h – FFA7FFFFh
FWH_D8_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
11 _{1 = Enable the following ranges for the Firmware Hub}
FFD80000h – FFDFFFFFh
FF980000h – FF9FFFFFh
FWH_D0_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
10 _{1 = Enable the following ranges for the Firmware Hub}
FFD00000h – FFD7FFFFh
FF900000h – FF97FFFFh
FWH_C8_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
9 _{1 = Enable the following ranges for the Firmware Hub}
FFC80000h – FFCFFFFFh
FF880000h – FF8FFFFFh
FWH_C0_EN — R/W. This bit enables decoding two 512-KB Firmware Hub memory ranges.
0 = Disable.
8 _{1 = Enable the following ranges for the Firmware Hub}
FFC00000h – FFC7FFFFh
FF800000h – FF87FFFFh
FWH_Legacy_F_EN — R/W. This enables the decoding of the legacy 128-K range at F0000h –
FFFFFh.
7 _{0 = Disable.}
1 = Enable the following legacy ranges for the Firmware Hub
F0000h – FFFFFh
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
359