FW82801EB Intel, FW82801EB Datasheet - Page 336

• Manufacturer Part Number: FW82801EB
• Manufacturer: Intel

Specifications of FW82801EB

• Lead Free Status / RoHS Status: Not Compliant

LPC Interface Bridge Registers (D31:F0)
9.1.28
336
FB_DEC_EN1—Flash BIOS Decode Enable 1 Register
(LPC I/F—D31:F0)
Offset Address:
Default Value:
This register determines which memory ranges will be decoded on the PCI bus and forwarded to
the flash BIOS. The ICH5 will subtractively decode cycles on PCI unless POS_DEC_EN is set to
1.
Bit
7
6
5
4
3
2
1
0
FB_F8_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges, and one
128-KB memory range.
0 = Disable
1 = Enable the following ranges for the flash BIOS
FB_F0_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS:
FB_E8_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS:
FB_E0_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS:
FB_D8_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS
FB_D0_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS
FB_C8_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS
FB_C0_EN — R/W. This bit enables decoding two 512-KB flash BIOS memory ranges.
0 = Disable
1 = Enable the following ranges for the flash BIOS
FFF80000h – FFFFFFFFh
FFB80000h – FFBFFFFFh
000E0000h – 000FFFFFh
FFF00000h – FFF7FFFFh
FFB00000h – FFB7FFFFh
FFE80000h – FFEFFFFh
FFA80000h – FFAFFFFFh
FFE00000h – FFE7FFFFh
FFA00000h – FFA7FFFFh
FFD80000h – FFDFFFFFh
FF980000h – FF9FFFFFh
FFD00000h – FFD7FFFFh
FF900000h – FF97FFFFh
FFC80000h – FFCFFFFFh
FF880000h – FF8FFFFFh
FFC00000h – FFC7FFFFh
FF800000h – FF87FFFFh
E3h
FFh
Intel
Description
Attribute:
Size:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
R/W
8 bits