FILL_SYN is a 16-bit read-only register. It is loaded but not locked on a correctable ECC error, so that another correctable error does not reload it. It is loaded and locked if an uncorrectable ECC error is detected during a fill from Bcache or main memory. The FILL_SYN register is unlocked when the EI_STAT register is read. If an ECC error is recognized during a cache fill operation, the syndrome bits associated with the bad quadword are loaded in the FILL_SYN register. FILL_SYN<07:00> contains the syndrome associated with the lower quadword of the octaword. FILL_SYN<15:08> contains the syndrome associated with the higher quadword of the octaword. A syndrome value of zero means that no errors were found in the associated quadword.
List of ECC syndrome codes sorted by syndrome.
List of ECC syndrome codes sorted by data bit.