IBM 1 Series Manual page 150

Pin J2——A-side
20 DI 9
19 DI 11
18 DI 13
17 Common
16 Common
15 Common
14 Common
13 Common
12 Common
11 Common
10 Common
9 Common
8 Common
7 Common
6 Common
5 Common
4 Common
3 DO 7
2 DO 8
1 DO 10
Figure 5-8.
Pin J3—A-side
20 DO 11
19 DO 13
18 DO 15
17 Common
16 Common
15 Common
14 Common
13 Common
12 Common
11 Common
10 Common
9 Common
8 Common
7 Common
6 Common
5 Common
4 Common
3 Ready
2 Ready
1 Ready
Figure 5-9.
Group
Group
2
2
2
J2—B-side Group
DI 10
DI 12
DI 14
DI 15
Ext sync in
Ext sync in
Ext sync in
Ext sync in
Spare
Spare
Spare
DO 0
DO 1
DO 2
DO 3
DO 4
DO 5
DO 6
Polarizing pin
DO 9
Integrated digital I/O pin assignments TCC connector J2 (middle of card)
J3—B-side Group
DO 12
DO 14
DO 0
DO 1
DO 2
DO 3
DO 4
DO 5
DO 6
CDC?
DO 8
DO 9
DO 10
DO 11
DO 12
DO 13
DO 14
DO 15
Polarizing pin
Ready
Integrated digital I/O pin assignments TCC connector J3 (bottom of card)
Integrated Digital Input/Output Feature 5-11