Bitfields for Intel 82371/82378/82379 System Event Enable Register:
Bit(s)	Description	)
 31	Fast-Off SMI enable (system and break events)
 30	(82379 only) Fast-Off Interrupt Enable (break events only)
 30	(82371 only) INTR enable (break events only)
 29	Fast-Off NMI enable (system and break events)
 28	(82371SB only) Fast-Off APIC enable (break events only)
 27	(82379 only) Fast-Off COM enable (system events only)
 26	(82379 only) Fast-Off LPT enable (system events only)
 25	(82379 only) Fast-Off Drive enable (system events only)
 24	(82379 only) Fast-Off DMA enable (system events only)
 23-16	reserved
 15-3	Fast-Off IRQ (15-3) enable (system and break events)
 2	reserved
 1-0	Fast-Off IRQ (1-0) enable (system and break events)
Note:	any enabled system event restarts the Fast-Off Timer, thus preventing
	  a Fast-Off powerdown; any enabled break event awakens the system from
	  powerdown
SeeAlso: #01064,#01079,#01080,#01082,#01167