Bitfields for Intel 82443BX Power Management Control Register:
Bit(s)	Description	)
 7	enable SDRAM power-down for idle rows
 6	enable ACPI control register at PORT 0022h
 5	suspend refresh type
	=0 self-refresh
	=1 CBR mode
 4	enable normal refresh (must be set before accessing RAM after a reset)
 3	quick-start mode enabled (read-only)
 2	enable dynamic clock gating on AGPset "IDLE" condition (all buses in
	  idle state)
 1	AGP disabled (read-only)
 0	enable CPU reset without PCIRST enable
SeeAlso: #01142