mc68ec020 Freescale Semiconductor, Inc, mc68ec020 Datasheet - Page 153

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

6-28
SP
SP
+$0A
+$0C
+$0E
+$1A
+$1C
+$1E
+$0A
+$0C
+$0E
+$1A
+$1C
+$2A
+$2C
+$5A
+$02
+$06
+$08
+$10
+$12
+$14
+$16
+$18
+$02
+$06
+$08
+$10
+$12
+$14
+$16
+$18
+$22
+$24
+$28
+$30
+$36
+$38
15
15
VERSION #
1 0 1 0
1 0 1 1
SHORT BUS FAULT STACK FRAME
LONG BUS FAULT STACK FRAME
DATA CYCLE FAULT ADDRESS
DATA CYCLE FAULT ADDRESS
INSTRUCTION PIPE STAGE C
INSTRUCTION PIPE STAGE B
INSTRUCTION PIPE STAGE C
INSTRUCTION PIPE STAGE B
SPECIAL STATUS REGISTER
SPECIAL STATUS REGISTER
(16 WORDS) — FORMAT $A
(46 WORDS) — FORMAT $B
DATA OUTPUT BUFFER
DATA OUTPUT BUFFER
INTERNAL REGISTERS,
INTERNAL REGISTERS,
INTERNAL REGISTERS,
INTERNAL REGISTER,
PROGRAM COUNTER
INTERNAL REGISTER
INTERNAL REGISTER
PROGRAM COUNTER
Stack Frames
INTERNAL REGISTER
INTERNAL REGISTER
INTERNAL REGISTER
INTERNAL REGISTER
INTERNAL REGISTER
INTERNAL REGISTER
DATA INPUT BUFFER
STATUS REGISTER
STATUS REGISTER
STAGE B ADDRESS
Table 6-5. Exception Stack Frames (Continued)
INTERNAL INFORMATION
18 WORDS
4 WORDS
2 WORDS
3 WORDS
VECTOR OFFSET
VECTOR OFFSET
M68020 USER’S MANUAL
0
0
Boundary
Progress
Bus Error —
Bus Error —
Instruction
Execution Unit
at Instruction
Execution in
Address Error or
Address Error or
Exception Types (Stacked PC Points to)
execution when fault occurred —
may not be the instruction that
generated the faulted bus cycle]
[Next instruction]
[Address of instruction in
MOTOROLA