Bitfields for Intel 82443BX Paging Policy Register:
Bit(s)	Description	)
 15-8	banks per row (bit 7 is row 0, bit 15 is row 7)
	=0 two banks
	=1 four banks
 7-5	reserved
 4	Intel Reserved
 3-0	DRAM Idle Timer ("DIT")
	number of clocks in idle state before all pages are precharged
	0000 no clocks
	0001 2 clocks
	0010 4 clocks
	0011 8 clocks
	0100 10 clocks
	0101 12 clocks
	0110 16 clocks
	0111 32 clocks
	1xxx never (pages are not closed on idle)
SeeAlso: #01142