Bitfields for Intel 82378ZB/82379 Utility Bus Chip Select B Register:
Bit(s)	Description	)
 7	configuration RAM decode enable
	=1 permit write accesses to I/O port 0C00h and r/w to ports 08xxh
 6	enable PORT 0092h
 5-4	parallel port enable
	00 LPT1 (ports 03BCh-03BFh)
	01 LPT2 (ports 0378h-037Fh)
	10 LPT3 (ports 0278h-027Fh)
	11 disabled
 3-2	serial port B enable
	00 COM1 (03F8h-03FFh)
	01 COM2 (02F8h-02FFh)
	10 reserved
	11 port B disabled
 1-0	serial port A enable
	00 COM1 (03F8h-03FFh)
	01 COM2 (02F8h-02FFh)
	10 reserved
	11 port A disabled
Note:	if both serial ports are set to the same address, port B is disabled
SeeAlso: #01064,#01072,PORT 0092h