MC68LC040RC25A Datasheet, PDF (84/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
PTEST (An)
R=0
R=1
B=1
B=0
BRANCH TO "BUS ERROR
DURING TABLE SEARCH" CODE
BRANCH TO "PAGE FAULT" OR
"INVALID DESCRIPTOR" CODE
T=0
T=1
S = 1 AND (USER ACCESS
INDICATED IN STACK FRAME)
OTHERWISE
BRANCH TO "SUPERVISOR
VOILATION" CODE
OTHERWISE
OTHERWISE
MATCH TTR0*
OTHERWISE
W=0
W=1
MATCH TTR1*
OTHERWISE
TTR0*[W] = 1 AND (WRITE OR
RMW ACCESS INDICATED IN
STACK FRAME)
OTHERWISE
WRITE OR RMW ACCESS
INDICATED IN STACK
FRAME
TTR1*[W] = 1 AND (WRITE OR
RMW ACCESS INDICATED IN
STACK FRAME)
NOT MMU
BRANCH TO "WRITE
VIOLATION" CODE
NOT MMU
BRANCH TO "WRITE
VIOLATION" CODE
* Refers to either instruction or data transparent translation register.
Figure 3-23. MMU Status Interpretation
MOTOROLA
M68040 USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
3-35