Appendix A. Connector Pin Assignments
Diskette Drive Connector
Note: The diskette drive connector is on the riser card.
Power Supply Connector
Note: The power supply connector is on the riser card.
Figure 31 (Page 2 of 2). IDE Connector Pin Assignments
Pin
Signal
I/O
Pin
Signal
I/O
14
Data bus bit 13
I/O
34
PDIAG#
I
15
Data bus bit 1
I/O
35
SA0
O
16
Data bus bit 14
I/O
36
SA2
O
17
Data bus bit 0
I/O
37
CS0#
O
18
Data bus bit 15
I/O
38
CS1
O
19
Ground
NA
39
Active#
I
20
Key (Reserved)
NA
40
Ground
NA
Figure 32. Diskette Drive Connector Pin Assignments
Pin
Signal
I/O
Pin
Signal
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
Track0#
I
27
MSEN0
I
28
Write protect#
I
29
Ground
NA
30
Read data#
I
31
Ground
NA
32
Head 1 select#
O
33
Data rate 1
NA
34
Diskette change#
I
Figure 33 (Page 1 of 2). Power Supply Connector Pin Assignments
Pin
Signal Name
Pin
Signal Name
1
+3.3 V
11
+3.3 V
2
+3.3 V
12
-12 V
3
Ground
13
Ground
4
+5 V
14
ON/OFF
56
Technical Information Manual
