Format of PCI Configuration for Intel 82443BX Device 0 (Host-PCI):
Offset Size Description )
00h 64 BYTEs header (see #00878)
(vendor ID 8086h, device ID 7190h/7192h)
10h DWORD graphics aperture base address
2Ch WORD subsystem vendor identification (write-once)
2Eh WORD subsystem device identification (write-once)
40h 16 BYTEs reserved (0)
50h DWORD 440BX Configuration (see #01144)
54h 3 BYTEs reserved (0)
57h BYTE DRAM Control (see #01145)
58h BYTE DRAM Timing (see #01146)
59h 7 BYTEs Programmable Attribute Map register 0-6 (see #01118)
60h 8 BYTEs DRAM Row Boundary registers 0-7
each register indicates top of memory for a particular row, in
8MB units; DIMMs use two rows each, with single-sided DIMMs
leaving the odd-numbered rows unpopulated
68h BYTE Fixed DRAM Hole Control (see #01147)
69h 6 BYTEs Memory Buffer Strength Control (see #01148)
6Fh 2 BYTEs reserved (0)
71h BYTE Intel Reserved (1Fh)
72h BYTE SMRAM Control (see #01123)
73h BYTE Extended SMRAM Control (see #01149)
74h WORD SDRAM Row Page Size (see #01150)
76h WORD SDRAM Control Register (see #01151)
78h WORD Paging Policy Register (see #01152)
7Ah BYTE Power Management Control (see #01153)
7Bh WORD Suspend CBR Refresh Rate Register (see #01154)
7Dh 3 BYTEs reserved (0)
80h DWORD Error Address Pointer (see #01155)
84h 12 BYTEs reserved (0)
90h BYTE Error Command Register (see #01156)
91h WORD Error Status Register (see #01157)
93h BYTE reserved (0)
94h DWORD Intel Reserved (00006104h)
98h WORD Intel Reserved (0500h)
9Ah BYTE Intel Reserved (0)
9Bh 5 BYTEs reserved (0)
A0h DWORD AGP Capability Identifier (see #01158)
A4h DWORD AGP Status Register (read-only) (see #01159)
A8h DWORD AGP Command Register (see #01160)
ACh 4 BYTEs reserved (0)
B0h DWORD AGP Control Register (see #01161)
B4h BYTE Aperture Size Control (see #01162)
B5h 3 BYTEs reserved (0)
B8h DWORD Aperture Translation Table (see #01163)
BCh 2 BYTEs reserved
BEh WORD reserved (0)
C0h DWORD Intel Reserved (0)
C4h DWORD Intel Reserved (0)
C8h BYTE Intel Reserved (18h)
C9h BYTE Intel Reserved (0Ch)
CAh 3 BYTEs Memory Buffer Frequency Select (see #01164)
CDh 3 BYTEs reserved (0)
D0h 8 BYTEs BIOS scratch pad (read-write, init to 0 on reset)
D8h 8 BYTEs Intel Reserved (0)
E0h 2 DWORDs DRAM Write Thermal Throttling Control (see #01165)
E8h 8 BYTEs DRAM Read Therman Throttling Control (see #01165)
F0h WORD Buffer Control Register (see #01166)
F2h 2 BYTEs Intel Reserved (0000h)
F4h DWORD Intel Reserved (0000F800h)
bits 30-29 are "Abort Disable Test Mode" configuration bits
and should always be set (according to Intel
Specification Update)
F8h DWORD Intel Reserved (00000F20h)
FCh DWORD Intel Reserved (0)
SeeAlso: #00873,#01143,PORT 0022h"82443BX"
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