Service manual

B-8 AlphaServer GS80/160/320 Service Manual
Table B– 5 Memory Command and Cache State Interaction
CPU Memory Cmnd Cache Block State Resultant Probe
RdBlk Invalid
Clean
Dirty FRd
Dirty-Shared FRd
RdBlkMod Invalid
Clean Inval
Dirty FRdMod
Dirty-Shared FRdMod
Fetch Invalid
Clean
Dirty FRd
Dirty-Shared FRd
RdBlkVic Invalid
Clean
Dirty FRd
Dirty-Shared FRd
RdBlkModVic Invalid
Clean Inval
Dirty FRdMod
Dirty-Shared FRdMod
FetchBlkVic Invalid
Clean
Dirty FRd
Dirty-Shared FRd
Victim Any State
Clean Victim Any State
Clean-to-Dirty Invalid
Clean Inval
Dirty Can’t Happen
Dirty-Shared Inval
Shared-to-Dirty Invalid
Clean Inval
Dirty Can’t Happen
Dirty-Shared Can’t Happen
STCChange-to-Dirty Invalid
Clean Inval
Dirty Can’t Happen
Dirty-Shared Inval
Inval-to-Dirty Invalid
Clean Inval
Dirty Inval
Dirty-Shared Inval
Full-Block-Write Invalid
Clean Inval
Dirty Inval
Dirty-Shared Inval