Format of PCI Configuration data for Intel 82454KX/GX:
Offset	Size	Description	)
 00h 64 BYTEs	header (see #00878)
		(vendor ID 8086h, device ID 84C4h)
!!!intel\29052301.pdf pg. 40
 40h	DWORD	top of system memory
 44h  4 BYTEs	reserved
 48h	BYTE	PCI decode mode
 49h	BYTE	bridge device number
 4Ah	BYTE	PCI bus number
 4Bh	BYTE	PCI subordinate bus number
 4Ch	BYTE	PB configuration
 4Dh  4 BYTEs	reserved
 51h	BYTE	deturbo counter control
 52h	BYTE	reserved
 53h	BYTE	CPU read/write control
 54h	WORD	PCI read/write control
 56h	BYTE	reserved
 57h	BYTE	SMM Enable
 58h	BYTE	video buffer area enable
 59h  7 BYTEs	Programmable Attribute Map registers 0-6 (see #01118)
 60h 16 BYTEs	reserved
 70h	BYTE	Error Command
 71h	BYTE	Error Status
 72h  6 BYTEs	reserved
 78h	WORD	memory gap range
 7Ah	WORD	memory gap upper address
 7Ch	DWORD	PCI frame buffer
 80h  8 BYTEs	reserved
 88h	DWORD	high memory gap start address
 8Ch	DWORD	high memory gap end address
 90h  8 BYTEs	reserved
 98h	DWORD	(GX only) I/O Space Range #1Ch	BYTE	PCI reset
 9Ch	BYTE	PCI reset
 9Dh  3 BYTEs	reserved
 A0h	DWORD	(GX only) I/O Space Range #24h	DWORD	I/O APIC range
 A4h	DWORD	I/O APIC range
 A8h  8 BYTEs	reserved
 B0h	WORD	configuration values driven on reset
 B2h  2 BYTEs	reserved
 B4h	WORD	captured system configuration values (read-only)
 B6h  2 BYTEs	reserved
 B8h	DWORD	SMM range
 BCh	BYTE	high BIOS register
 BDh  3 BYTEs	reserved
 C0h	DWORD	PB Extended Error Reporting Command
 C4h	DWORD	PB Extended Error Reporting Status
 C8h	DWORD	PB Retry Timers
 CCh 52 BYTEs	reserved
SeeAlso: #00878