Loading...
4- 16 M68040 USER'S MANUAL MOTOROLA
VALID
DIRTY
INVALID
I4—CPU WRITE MISS/WT
I7—CINV
I8—CPUSH
I3—CPU WRITE MISS/CB
V1—CPU READ MISS
V2—CPU READ HIT
V4—CPU WRITE MISS/WT
V6—CPU WRITE HIT/WT
V9—SNOOP READ HIT/LEAVE DIRTY
ABBREVIATIONS:
WT—WRITE-THROUGH MODE
CB—COPYBACK MODE
SNOOP OPERATION INDICATES:
READ OR WRITE / SNOOP CONTROL
ENCODING
I1—CPU READ MISS
V7—CINV
V8—CPUSH
V10—SNOOP READ HIT/INVALIDATE
V11—SNOOP WRITE HIT/INVALIDATE
V12—SNOOP WRITE HIT/SINK DATA &
SIZE = LINE
V13—SNOOP WRITE HIT/SINK DATA &
SIZE = LINE
D2—CPU READ HIT
D3—CPU WRITE MISS/CB
D4—CPU WRITE MISS/WT
D5—CPU WRITE HIT/CB
D6—CPU WRITE HIT/WT
D9—SNOOP READ HIT/LEAVE DIRTY
D12—SNOOP WRITE HIT/SINK DATA
& SIZE = LINE
D7—CINV
D8—CPUSH
D10—SNOOP READ 
HIT/INVALIDATE
D11—SNOOP WRITE HIT/
INVALIDATE
D13—SNOOP WRITE HIT/SINK
DATA & SIZE = LINE
V3—CPU WRITE MISS/CB
V5—CPU WRITE HIT/CB
D1—CPU READ MISS
Figure 4-6. Data-Cache Line State Diagram
Loading...
Terms of Use | Privacy Policy | DMCA Policy
2006-2020 Rsmanuals.com