IBM PowerPC 604 User Manual page 157

Table 3-6. cache Actions (Continued}
Cache MESI
Action
Bus Bus
TT0-4
Rsv'n
Snoop
Action
WIM State Operation WIM
Response
100
ESI dcbst Clean
100 00000
(n/a) Ar:iTRY'or Release the bus
Am'RV&mil5
retry the operation
100
ESI dcbst Clean
100
00000
(nla) (None) or No-op
SRl)
100
M dcbst Write with
100 00110
(n/a) (None) or Write the block back to memory
kill
SRl)
mark cache block E
100
M
dcbst
Write with
100 00110
(nla)
ARTRY'
or Release the bus
kill
Ar:iTRV&SRl5
retry the operation
101
ESI dcbst Clean
101 00000 (nla)
(None) or No-op
SRI)
101
ESI dcbst
Clean
101 00000
(nla)
ARTRY'
or Release the bus
AFITJW&SRI)
retry the operation
101
M deb st Write with
100 00110
(n/a) (None) or
Write the block back to memory
kill
SRI)
mark cache block E
101
M dcbst Write with
100 00110
(n/a)
ARTRY
or Release the bus
kill
Am'RV&§m
retry the operation
000
I dcbf
Flush
000
00100
(n/a) (None) or
No-op
SRI)
000
I dcbf Flush
000 00100
(n/a)
ARTRY'
or Release the bus
Am'RV&SR15
retry the operation
000
ES dcbf Flush
000 00100
(nla) (None) or Mark cache block I
SRI)
000
ES dcbf Flush
000 00100
(nla)
ARTRY
or Release the bus
ARTRV'&'§m'
retry the operation
000
M dcbf Write with
100
00110
(nla) (None) or
Write the block
of
data back to
kill
'§m'
main memory
mark the cache block I
000
M
dcbf Write with
100 00110
(n/a)
ARTRY
or Release the bus
kill
Am'RV&§m
retry the operation
001
I dcbf
Flush
001 00100
(n/a) (None) or
No-op
'SAD
001
ES dcbf Flush
001 00100
(n/a)
(None) or Mark cache block I
'SAD
001
ESI dcbf Flush
001 00100
(n/a)
ARTRY
or Release the bus
Am'RV&'SRD
retry the operation
001
M
dcbf Write with
100 00110
(nla) (None) or
Write all bytes in the cache block
kill
'SAD
to main memory
mark cache block I
001
M dcbf Write
with 100 00110
(nla)
ARTRY
or Release the bus
kill
Am'RV&SR15
retry the operation
3-34
PowerPC 604 RISC Microprocessor User's Manual