mc68ec020 Freescale Semiconductor, Inc, mc68ec020 Datasheet - Page 152

• Manufacturer Part Number: mc68ec020
• Description: Microprocessors
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
SP
SP
SP
SP
+$0C
+$02
+$06
+$02
+$06
+$02
+$06
+$08
+$02
+$06
+$08
+$12
FOUR-WORD STACK FRAME — FORMAT $0
STACK FRAME (10 WORDS) — FORMAT $9
15
15
15
15
0 0 0 0
0 0 0 1
0 0 1 0
1 0 0 1
COPROCESSOR MIDINSTRUCTION
STACK FRAME — FORMAT $1
STACK FRAME — FORMAT $2
THROWAWAY FOUR-WORD
INSTRUCTION ADDRESS
INSTRUCTION ADDRESS
INTERNAL REGISTERS,
PROGRAM COUNTER
PROGRAM COUNTER
PROGRAM COUNTER
PROGRAM COUNTER
Stack Frames
STATUS REGISTER
STATUS REGISTER
STATUS REGISTER
STATUS REGISTER
SIX-WORD
4 WORDS
VECTOR OFFSET
VECTOR OFFSET
VECTOR OFFSET
VECTOR OFFSET
Table 6-5. Exception Stack Frames
M68020 USER’S MANUAL
0
0
0
0
Main-Detected
Instruction
primitive)
Preinstruction
Interrupt Stack
during interrupt
exception processing
when transition from
master state to
Postinstruction
Midinstruction
Protocol Violation
During Coprocessor
come again with
interrupts allowed'
interrupt state occurs
(supported with 'null
Interrupt
Format Error
TRAP #N
Illegal Instruction
A-Line Instruction
F-Line Instruction
Privilege Violation
Coprocessor
Created on
CHK
CHK2
cpTRAPcc
TRAPcc
TRAPPV
Trace
Zero Divide
MMU Configuration
Coprocessor
Coprocessor
Interrupt Detected
Exception Types (Stacked PC Points to)
primitive]
master stack]
exceptions]
Privilege Violation]
returned the 'take preinstruction'
is the address of the instruction
that caused the exception
instruction stream for all these
is the address of the instruction
that caused the exception
[Next instruction]
[RTE or cpRESTORE instruction
[NEXT instruction]
[Illegal instruction]
[A-line instruction]
[F-line instruction]
[First word of instruction causing
[Opword of instruction that
[Next instruction — same as on
[Next instruction for all these
exceptions]
INSTRUCTION ADDRESS
[Next word to be fetched from
INSTRUCTION ADDRESS
6-27