MC68EC000 Motorola, MC68EC000 Datasheet - Page 97

• Manufacturer Part Number: MC68EC000
• Description: Core Processor (SCM 68000)
• Manufacturer: Motorola

Exception Processing
4-12
NOTES:
1.Vector numbers 12–14, 16–23, and 48–63 are reserved for future enhancements by
Motorola. No user peripheral devices should be assigned these numbers.
2.Reset vector (0) requires four words, unlike the other vectors which only require two
words, and is located in the supervisor program space.
3.The spurious interrupt vector is taken when there is a bus error indication during
interrupt processing.
4.TRAP #n uses vector number 32+ n (decimal).
5.SP denotes supervisor program space, and SD denotes supervisor data space.
Vectors Numbers
20–2F
30–3F
40–FF
10–17
Hex
1A
1B
1C
1D
1E
1F
18
19
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
Decimal
64–255
16–23
48–63
32–47
Table 4-2. Exception Vector Assignment
12
13
14
Freescale Semiconductor, Inc.
10
11
15
24
25
26
27
28
29
30
31
EC000 CORE PROCESSOR USER’S MANUAL
0
1
2
3
4
5
6
7
8
9
1
1
1
For More Information On This Product,
1
1
1020
Dec
100
104
108
112
116
120
124
128
188
192
255
256
12
16
20
24
28
32
36
40
44
48
52
56
60
64
92
96
0
4
8
Address
Go to: www.freescale.com
Hex
00C
01C
02C
03C
05C
06C
07C
0BC
0C0
3FC
0FF
000
004
008
010
014
018
020
024
028
030
034
038
040
060
064
068
070
074
078
080
100
Space
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SP
SP
5
Reset: Initial SSP
Reset: Initial PC
Bus Error
Address Error
Illegal Instruction
Divide-by-Zero
CHK Instruction
TRAPV Instruction
Privilege Violation
Trace
Line 1010 Emulator
Line 1111 Emulator
(Unassigned, Reserved)
(Unassigned, Reserved)
(Unassigned, Reserved)
Uninitialized Interrupt Vector
(Unassigned, Reserved)
Spurious Interrupt
Level 1 Interrupt Autovector
Level 2 Interrupt Autovector
Level 3 Interrupt Autovector
Level 4 Interrupt Autovector
Level 5 Interrupt Autovector
Level 6 Interrupt Autovector
Level 7 Interrupt Autovector
TRAP Instruction Vectors
(Unassigned, Reserved)
User Interrupt Vectors
Assignment
2
2
3
4
MOTOROLA