Address Translation Flowchart - Motorola M68060 User Manual

(WRITE OR LOCKED RMW CYCLE)
ABORT CYCLE
TAKE ACCESS ERROR
EXCEPTION
(M = 0) AND
(WRITE OR LOCKED RMW CYCLE)
ABORT CYCLE
TABLE SEARCH
OPERATION
* Refers to either instruction or data transparent translation register.
operation and before translation is enabled. PFLUSH can be executed even if the E-bit is
cleared.
MOTOROLA
ENTRY
OTHERWISE
ATC HIT
ATC MISS
[(W = 1) AND
OTHERWISE
OTHERWISE
UPA
PA ATC ENTRY [PA]
UPA ATC ENTRY [U1,U0]
CM ATC ENTRY [CM]
EXIT
Figure 4-21. Address Translation Flowchart
M68060 USER'S MANUAL
LOGICAL ADDRESS
MATCHES WITH
TTRx*
OTHERWISE
(TTR1*[W] = 1) AND
(WRITE OR LOCKED
RMW ACCESS)
OTHERWISE
ABORT CYCLE
TAKE ACCESS ERROR
EXCEPTION
PA LOGICAL ADDRESS
TTR1* [U1,U0]
CM TTR1* [CM]
EXIT
Memory Management Unit
LOGICAL ADDRESS
MATCHES WITH TTR0*
(TTR0*[W] = 1) AND
(WRITE OR LOCKED
RMW ACCESS)
OTHERWISE
PA LOGICAL ADDRESS
UPA TTR0* [U1,U0]
CM TTR0* [CM]
EXIT
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