Appendix A. Connector Pin Assignments
Diskette Drive Connector
1
2
34
33
Figure 6. Diskette Drive Connector
The diskette drive connector is a 34-pin, shrouded berg strip located on the system board.
Table 40. Pin Assignments for the Diskette Drive Connector
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Drive 2 installed#
I
2
High density select
O
3
Not connected
NA
4
Not connected
NA
5
Ground
NA
6
Data rate 0
NA
7
Ground
NA
8
Index#
I
9
Reserved
NA
10
Motor enable 0#
O
11
Ground
NA
12
Drive select 1#
O
13
Ground
NA
14
Drive select 0#
O
15
Ground
NA
16
Motor enable 1#
O
17
MSEN1
I
18
Direction in#
O
19
Ground
NA
20
Step#
O
21
Ground
NA
22
Write data#
O
23
Ground
NA
24
Write enable#
O
25
Ground
NA
26
Track 0#
I
27
MSEN0
I
28
Write protect#
I
29
Ground
NA
30
Read data#
I
31
Ground
NA
32
Head 1 select#
O
33
Ground
NA
34
Diskette change#
I
Appendix A. Connector Pin Assignments
43
