Bitfields for Intel 82371MX Audio enable register:
Bit(s)	Description	)
 7	Audio enabled
 6-4	Reserved
 3-2	Audio I/O Address
	00	0220h
	01	0230h
	10	0240h
	11	0250h
 1-0	reserved
SeeAlso: #01168,PORT xxxxh"Intel 82371"