System Board Memory Connector, Type - IBM Personal System/2 50 Technical Reference

Type 2 Memory Connector
Pin 1/0 Signal Pin
110
Signal
1 N/A Ground 37
1/0
Parity Data 1
2 1/0 Data 0 38
110
Parity Data 3
3 1/0 Data 16 39 N/A Ground
4
1/0 Data 1 40
0
Column Address Strobe 0
5
1/0
Data 17 41
0
Column Address Strobe 2
6 1/0 Data 2 42
0
Column Address Strobe 3
7
110
Data 18 43
0
Column Address Strobe 1
8
110
Data 3 44
0
Row Address Strobe 0
9
110
Data 19 45
0
Row Address Strobe 1
10
0
+5Vdc 46
0
Block Select 1
11
0
-Column Address Strobe P 47
0
Write Enable
12
0
Address 0 48 N/A Reserved
13
0
Address 1 49
110
Data 8
14
0
Address 2 50
110
Data 24
15
0
Address 3 51
110
Data 9
16
0
Address 4 52
110
Data 25
17
0
Address 5 53
110
Data 10
18
0
Address 6 54
110
Data 26
19 N/A Reserved 55
110
Data 11
20
110
Data 4 56
110
Data 27
21
110
Data 20 57
110
Data 12
22
110
Data 5 58
110
Data 28
23
110
Data 21 59
0
+5Vdc
24
110
Data 6
60
110
Data 29
25
110
Data 22 61
110
Data 13
26
110
Data 7 62
110
Data 30
27
110
Data 23 63
110
Data 14
28
0
Address 7 64
110
Data 31
29
0
Block Select 0 65
110
Data 15
30
0
+5Vdc 66
0
Block Select 2
31
0
Address 8 67
I
Presence Detect 0
32 N/A Reserved 68
I
Presence Detect 1
33
0
Row Address Strobe 3 69
I
Presence Detect 2
34
0
Row Address Strobe 2 70
I
Presence Detect 3
35
110
Parity Data 2 71
0
Block Select 3
36
110
Parity Data 0 72 N/A Ground
Figure 3-6. System Board Memory Connector, Type 2
3-10 Model 50 System Board