Bitfields for Intel 82441FX Error Command register:
Bit(s)	Description	)
 7-5	reserved
 4	enable SERR# on receiving Target Abort
 3	enable SERR# on PCI Parity Error (PERR#)
 2	reserved
 1	enable SERR# on receiving multiple-bit ECC/Parity error
 0	enable SERR# on receiving single-bit ECC error
SeeAlso: #01229,#01238