Bitfields for Intel 82371FB/82371SB miscellaneous status register:
Bit(s)	Description	)
 15	(82371SB) enable SERR# on delayed transaction
	write 1 to clear this bit
 14-8	reserved
 7	(82371SB) NB Retry Enable
 6	(82371SB) EXTSMI# Mode Enable
	allow special SERR# protocol between PCI bridge and 82371
 5	reserved
 4	(82371SB) enable USB
	disable USB's master enable and I/O decode enable prior to
	 clearing this bit!
 3	reserved
 2	(82371FB) PCI Header Type Bit enable
	=1 report multifunction device in PCI configuration header
 1	(82371FB) internal ISA DMA/external DMA Mode status (read-only)
	=0 normal DMA operation
 0	(82371FB) ISA Clock Divisor status (read-only)
	(82371SB) ISA Clock Divisor (read-write)
	=1 SYSCLK clock divisor is 3
	=0 SYSCLK clock divisor is 4
SeeAlso: #01167,#01216