IBM AT 5170 Technical Reference page 44

The following figures summarize pin assignments for the I/O
channel connectors.
I/O Pin
Signal
Al
-I/O CH
A2
S07
A3
So6
A4
S05
A5 so4
A6
S03
A7
S02
A8
SOl
A9 SOO
AlO
-I/O CH
Al I
AEN
Al2
SAl9
Al3 SAl8
Al4 SAl7
Al5 SAl6
Al6
SAIS
Al7 SAl4
Al8
SAl3
Al9 SAl2
Name I/O
CK
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
ROY
I
0
/0
/0
/0
/0
/0
/0
/0
/0
A20 SA I I
/0
A21
SAIO /0
A22
SA9 /0
A23 SA8 /0
A24
SA7 /0
A25 SA6 /0
A26
SA5 /0
A27
SA4 /0
A28
SA3 /0
A29 SA2 /0
A30 SAl /0
A31 SAO /0
I/O Channel (A-Side, J1 through J8)
1-28
System Board