Bitfields for TI PCI1130 Device Control Register:
Bit(s)	Description	)
 0	reserved (0)
 2-1	interrupt mode enable
	00 no interrupt
	01 ISA mode (direct IRQ routing)
	10 serialized interrupt mode
	11 reserved
 4-3	reserved
 5	3volt Socket Capable force bit
 6	5volt Socket Capable force bit
 7	reserved
SeeAlso: #00890,#00897