mcf5307cft90b Freescale Semiconductor, Inc, mcf5307cft90b Datasheet - Page 88

• Manufacturer Part Number: mcf5307cft90b
• Description: Mcf5307 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Exception Processing Overview
ColdFire processors support a 1024-byte vector table aligned on any 1-Mbyte address
boundary; see Table 2-18. The table contains 256 exception vectors where the first 64 are
defined by Motorola; the remaining 192 are user-defined interrupt vectors.
2-48
Vector Numbers
4. The processor acquires the address of the first instruction of the exception handler.
16–23
25–31
32–47
48–60
6–7
fixed-length stack frame for all exceptions. The exception type determines whether
the program counter in the exception stack frame defines the address of the faulting
instruction (fault) or of the next instruction to be executed (next).
The exception vector table is aligned on a 1-Mbyte boundary. This instruction
address is obtained by fetching a value from the table at the address defined in the
vector base register. The index into the exception table is calculated as
4 x vector_number. When the index value is generated, the vector table contents
determine the address of the first instruction of the desired handler. After the fetch
of the first opcode of the handler is initiated, exception processing terminates and
normal instruction processing continues in the handler.
10
11
12
13
14
15
24
61
0
1
2
3
4
5
8
9
Vector Offset (Hex)
080–0BC
0C0–0F0
Table 2-18. Exception Vector Assignments
018–01C
040–05C
064–07C
Freescale Semiconductor, Inc.
00C
02C
03C
000
004
008
010
014
020
024
028
030
034
038
060
0F4
For More Information On This Product,
Go to: www.freescale.com
MCF5307 User’s Manual
Stacked Program Counter
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Next
Next
Next
Next
Next
Next
—
—
—
—
—
—
1
Initial stack pointer
Initial program counter
Access error
Address error
Illegal instruction
Divide by zero
Reserved
Privilege violation
Trace
Unimplemented line-a opcode
Unimplemented line-f opcode
Debug interrupt
Reserved
Format error
Uninitialized interrupt
Reserved
Spurious interrupt
Level 1–7 autovectored interrupts
Trap #0–15 instructions
Reserved
Unsupported instruction
Assignment