MC68LC040RC25A Datasheet, PDF (216/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
ENTRY
SAVE INTERNAL
COPY OF SR
S ±1
T1, T0 ± 0
(SEE NOTE)
FETCH VECTOR
NUMBER
OTHERWISE
BUS ERROR
SAVE CONTENTS
TO STACK FRAME
(SEE NOTE)
(DOUBLE BUS FAULT)
OTHERWISE
BUS ERROR
EXECUTE EXCEPTION
HANDLER
(DOUBLE BUS FAULT)
PREFETCH 4
LONG WORDS
OTHERWISE
BEGIN INSTRUCTION
EXECUTION
BUS ERROR OR
ADDRESS ERROR
(DOUBLE BUS FAULT)
HALTED STATE
(PST3–PST0 = $5)
EXIT
EXIT
NOTE: These blocks vary for reset and interrupt exceptions.
Figure 8-1. General Exception Processing Flowchart
MOTOROLA
M68040 USER’S MANUAL
8-3
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