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X7SBL-LN1/LN2 User’s Manual
2-9
Floppy and SIM 1U IPMI Connections
Note the following when connecting the floppy and hard disk drive cables:
• The floppy disk drive cable has seven twisted wires.
• A red mark on a wire typically designates the location of pin 1.
• A single floppy disk drive ribbon cable has two connectors to provide for two
floppy disk drives. The connector with twisted wires always connects to drive
A, and the connector that does not have twisted wires always connects to drive
B.
Floppy Connector
The floppy connector is located at
J27. See the table below for pin
definitions.
A.
Floppy
Floppy Drive Connector
Pin Definitions (Floppy)
Pin# Definition Pin # Definition
1
Ground
2
FDHDIN
3
Ground
4
Reserved
5
Key
6
FDEDIN
7
Ground
8
Index
9
Ground
10
Motor Enable
11
Ground
12
Drive Select B
13
Ground
14
Drive Select B
15
Ground
16
Motor Enable
17
Ground
18
DIR
19
Ground
20
STEP
21
Ground
22
Write Data
23
Ground
24
Write Gate
25
Ground
26
Track 00
27
Ground
28
Write Protect
29
Ground
30
Read Data
31
Ground
32
Side 1 Select
33
Ground
34
Diskette
A