82801BA Datasheet, PDF (281/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

LPC Interface Bridge Registers (D31:F0)
9.1.31
FWH_SEL1—FWH Select 1 Register (LPC I/F—D31:F0)
Offset Address: E8h
Default Value: 00112233h
Attribute:
Size:
R/W
32 bits
Bit
Description
31:28
27:24
23:20
19:16
15:12
11:8
7:4
3:0
FWH Address Range Select (FWH_F8_IDSEL)—RO. IDSEL for two 512 KB FWH memory ranges
and one 128KB memory range. This field is fixed at 0000. The IDSEL in this field addresses the
following memory ranges:
FFF8 0000h–FFFF FFFFh
FFB8 0000h–FFBF FFFFh
000E 0000h–000F FFFFh
FWH Address Range Select (FWH_F0_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFF0 0000h–FFF7 FFFFh
FFB0 0000h–FFB7 FFFFh
FWH Address Range Select (FWH_E8_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFE8 0000h–FFEF FFFFh
FFA8 0000h–FFAF FFFFh
FWH Address Range Select (FWH_E0_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFE0 0000h–FFE7 FFFFh
FFA0 0000h–FFA7 FFFFh
FWH Address Range Select (FWH_D8_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFD8 0000h–FFDF FFFFh
FF98 0000h–FF9F FFFFh
FWH Address Range Select (FWH_D0_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFD0 0000h–FFD7 FFFFh
FF90 0000h–FF97 FFFFh
FWH Address Range Select (FWH_C8_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFC8 0000h–FFCF FFFFh
FF88 0000h–FF8F FFFFh
FWH Address Range Select (FWH_C0_IDSEL)—R/W. IDSEL for two 512 KB FWH memory
ranges. The IDSEL programmed in this field addresses the following memory ranges:
FFC0 0000h–FFC7 FFFFh
FF80 0000h–FF87 FFFFh
82801BA ICH2 and 82801BAM ICH2-M Datasheet
9-19