Directory Controller State Machine
Directory Controller State Machine
Directory
Controller
State Machine
Active
Transaction
Table
Block 0
Block 1
Block 2
Block 3
Block Addr
SB Addr
Mask
Sub RWI
Sub RWW
Msg Type
Node Ptr
State
Protocol
Src Node
Block Addr Block Physical Address
SB Addr Shared Buffer Address
Mask Valid Word Mask
Node Ptr Node Pointers of Sharers
Sub RWI Subblock Read Write Issue
Sub RWW Subblock Read Write Wait
Msg Type Type of the Message
Src Node Source Node
State Directory State
Protocol DSM Protocol