Slot 139, 147
I/O, IM, IP without page addressing
Slot 155, 163
I/O, IM
Backplane
conn. 1
Pin
No.
Pin Row
Pin
No.
Pin Row
z
b
d
z
b
d
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
P5 V
PL
RESET
MEMR
MEMW
RDY
DB 0
DB 1
DB 2
DB 3
DB 4
DB 5
DB 6
DB 7
M5 V
PESP
ADB 0
ADB 1
ADB 2
ADB 3
ADB 4
ADB 5
ADB 6
ADB 7
ADB 8
ADB 9
ADB 10
ADB 11
BASP
M5 V
ADB 12
ADB 13
ADB 14
ADB 15
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
BASPA
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
P5 V
PL
RESET
MEMR
MEMW
RDY
DB 0
DB 1
DB 2
DB 3
DB 4
DB 5
DB 6
DB 7
M5 V
PESP
ADB 0
ADB 1
ADB 2
ADB 3
ADB 4
ADB 5
ADB 6
ADB 7
ADB 8
ADB 9
ADB 10
ADB 11
BASP
M5 V
P5 V
ADB 12
ADB 13
ADB 14
ADB 15
P5 V
P5 V
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
BASPA
Backplane
conn. 2
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
P5 V
DB 12
DB 13
DB 14
DB 15
RESETA
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
DB 8
DB 9
DB 10
DB 11
PEU
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
P5 V
DB 12
DB 13
DB 14
DB 15
P5 V
P5 V
P5 V
RESETA
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
DB 8
DB 9
DB 10
DB 11
P5 V
P5 V
P5 V
PEU
M5 V
M5 V
M5 V
M5 V
M5 V
M5 V
Pin designations of the interrupt signals on the backplane
Interrupt Sink
Interrupt Source
Module
CPU 1
CPU 2
CPU 3
CPU 4
I/Os/CP/IP
Slot No.
11
27
43
59
19, 35, 51, 67-131
Signal
IRA
IRB
IRC
IRD
IRE (CPU 948 only)
IRF (CPU 948 only)
IRG(CPU 948 only)
1d 14
1d 22
1d 24
1d 26
1d 14
1d 22
1d 24
1d 26
1d 14
1d 22
1d 24
1d 26
1d 14
1d 22
1d 24
1d 26
1d 14
1d 16
1d 18
1d 20
1d 22
1d 24
1d 26
10
Connector Assignments
System Manual
C79000-T8576-C199-03
10 - 5