mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 79

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

Memory Management Unit
4-10
PFA - PAGE FRAME ADDRESS
DF[ ] - DESCRIPTOR FIELD
WP - ACCUMULATED WRITE-
ABBREVIATIONS:
Figure 4-8. Detailed Flowchart of Table Search Operation
EXIT TABLE SEARCH
PROTECTION STATUS
ASSIGNMENT OPERATOR
'INVALID'
'INVALID'
OTHERWISE
'INVALID'
M68060 USER’S MANUAL
(CHECK DESCRIPTOR TYPE)
(CHECK DESCRIPTOR TYPE)
(CHECK DESCRIPTOR TYPE)
(CHECK DESCRIPTOR TYPE)
SELECT ROOT POINTER
(INITIALIZE ACCRUED
FC2 = 0:URP, 1:SRP
TYPE
UPDATE
TYPE 'POINTER'
FETCH POINTER
FETCH INDIRECT
DESCRIPTOR
TYPE
FETCH ROOT
DESCRIPTOR
FETCH PAGE
DESCRIPTOR
DESCRIPTOR
'RESIDENT'
'RESIDENT'
'INDIRECT'
STATUS)
WP
ENTRY
'INDIRECT'
'PAGE'
0
FALSE
ATC ENTRY
'RESIDENT'
'RESIDENT'
PFA = PHYSICAL ADDRESS
ATC TAG
FIELD OF DESCRIPTOR
EXIT TABLE SEARCH
CREATE ATC ENTRY
PFA, DF[U1,U0,S,CM,M],WP
FC2, LA, DF[G]
MOTOROLA