MC68020 Motorola, MC68020 Datasheet - Page 153

• Manufacturer Part Number: MC68020
• Description: (MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
• Manufacturer: Motorola

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
Address Error or
Bus Error —
Execution Unit
at Instruction
Boundary
Address Error or
Bus Error —
Instruction
Execution in
Progress
Exception Types (Stacked PC Points to)
[Next instruction]
[Address of instruction in
execution when fault occurred —
may not be the instruction that
generated the faulted bus cycle]
MOTOROLA