Format of PCI Configuration for Intel 82371FB/82371SB Function 1 (IDE):
Offset	Size	Description	)
 00h 64 BYTEs	header (see #00878)
		(vender ID 8086h, device ID 1230h/7010h)
 20h	DWORD	Bus Master Interface Base Address
		(see PORT xxxxh"Intel 82371SB")
 40h	WORD	IDE timing modes, primary channel (see #01223)
 42h	WORD	IDE timing modes, secondary channel (see #01223)
 44h	BYTE	(82371SB) slave IDE timing register (see #01224)
 45h 187 BYTEs	reserved
SeeAlso: #01167,#01215,PORT xxxxh"Intel 82371SB"