IBM PowerPC 604 User Manual page 150

Table 3-6. Cache Actions (Continued)
Cache MESI
Action
Bus Bus
TT0-4
Rsv'n
Snoop
Action
WIM State
Operation WIM Response
001 I Store RWITM 001 01110 (n/a) (None) or
Load the block of data Into cache
§m
mark cache block E
store to cache
mark cache block M
001 I Store
RWITM
001
01110
(n/a)
JtFITF!V
or Release the bus
JtFITF!V&§m
retry the operation
001
s
Store Kill
001 01100
(n/a)
(None) or Wait for kill to be successfully
§m
presented
mark cache block E
store to cache
mark cache block M
001
s
Store Kill 001 01100 (n/a)
JtFITF!V
or Release the bus
JtFITF!V&§m
retry the operation
001 E Store (None) (n/a) (nla) (n/a) (n/a) Store to cache
mark cache block M
001 M Store (None) (n/a) (n/a) (n/a) (n/a) Store to cache
011 I Store Write with 01M 00010
(n/a)
(None) or Store to main memory
010 flush 11M
'SRn
110
111
011 I Store Write with 01M 00010 (n/a) Am'RVor Release the bus
010 flush 11M
XR'fRV&§m
retry the operation
110
111
011 ES Store Write with 01M 00010
(n/a)
(None) or Paradox-<:ache should be I
010 flush 11M
§m
store to main memory
110
111
011 ES Store Write with 01M 00010 (n/a) Am'RVor Paradox-<:ache should be I
010 flush 11M
JtFITF!V&'SRD
release the bus
110
retry the operation
111
011 M Store Write with 01M 00010 (n/a) (None) or Paradox-<:ache should be I
010 flush 11M
'SRn
store to main memory
110
111
011 M Store Write with 01M 00010
(n/a)
ARTRY or Paradox-<:ache should be I
010 flush 11M
JtFITF!V&§m
release the bus
110 retry the operation
111
100
I
Store
Write with 100
00010 (n/a) (None) or Store to main memory
flush
'SRn
100 ME Store Write with 100 00010 (n/a) Am'RVor Release the bus
SI flush
JtFITF!V&'SRD
retry the operation
Chapter 3. Cache and Bus Interface Unit Operation
3-27