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Format of PCI configuration for Intel 82443EX/LX Device 0 (Host-PCI)

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Offset Size Description

00h

64 BYTEs

header (see #00878) (vendor ID 8086h, device ID 7180h) chipset is 82443EX if revision >= 03h

40h

16 BYTEs

reserved

50h

WORD

PAC Configuration register (See #01131)

52h

BYTE

reserved

53h

BYTE

Data Buffer Control register (see #01132)

54h

BYTE

reserved

55h

WORD

DRAM Row Type register (see #01133)

57h

BYTE

DRAM Control register (see #01134)

58h

BYTE

DRAM Timing register (see #01135)

59h

7 BYTEs

PAM Configuration registers 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 register (see #01147)

69h

BYTE

reserved

6Ah

WORD

DRAM Extended Mode Select register (see #01136)

6Ch

DWORD

Memory Buffer Strength Control register (see #01137)

70h

BYTE

Multi-Transaction Timer register (see #01140)

71h

BYTE

reserved

72h

BYTE

System Management RAM Control register (see #01123)

73h

29 BYTEs

reserved

90h

BYTE

Error Command register (see #01156)

91h

BYTE

Error Status 0 register (see #01138)

92h

BYTE

Error Status 1 register (see #01139)

93h

BYTE

Reset Control Register (see #01239)

94h

12 BYTEs

reserved

A0h

DWORD

AGP Capability register (see #01158)

A4h

DWORD

AGP Status register (see #01159)

A8h

DWORD

AGP Command register (see #01160)

ACh

4 BYTEs

reserved

B0h

DWORD

AGP Control register (see #01161)

B4h

BYTE

Arpeture Size Control register (see #01162)

B5h

3 BYTEs

reserved

B8h

DWORD

Arpeture Translation Table Base register (see #01163)

BCh

BYTE

AGP MTT Control register (see #01140)

BDh

BYTE

AGP Low Priority Transaction timer register (see #01141)

BEh

67 BYTEs

reserved

Note:

The 82443EX is virtually identical to the 82443LX, except that it does not support ECC type DRAM.
The Intel 82443EX/LX chipsets use PCI configuration mechanism.

See Also:

#01130,#01142