Bitfields for Intel 82371MX Miscellaneous Status register:
Bit(s)	Description	)
 15-3	reserved
 2-1	reserved (0)
 0	ISA Clock Divisor Status
	=1 Divisor=3 (PCICLK=25MHz) default
	=0 Divisor=4 (PCICLK=33MHz)
Note:	This is a read-only register that reports on chipset jumper settings.
SeeAlso: #01168,PORT xxxxh"Intel 82371"