Bitfields for Intel 82443BX Error Address Pointer:
Bit(s)	Description	)
 31-12	(read-only) bits 31-12 of address in which first parity/ECC error
	  occurred
 11-2	reserved
 1	(write-clear) multi-bit error occurred
 0	(write-clear) single-bit error occurred
SeeAlso: #01156,#01142