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X6DH8-XG2/X6DHE-XG2 User's Manual
2-8
Floppy/Hard Disk Drive and SCSI 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 34 wires and 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
on JFDD1. See the table below
for pin definitions.
GLAN1
GLAN2
JP16
8-pin
PWR
Force PWR ON
PWR
SMBus
Clear
CMOS
SCSI
Enable
SCSI
DA1
2-26
Floppy Connector Pin Definitions
Pin Number
Function
Pin Number
1
GND
3
GND
5
Key
7
GND
9
GND
11
GND
13
GND
15
GND
17
GND
19
GND
21
GND
23
GND
25
GND
27
GND
29
GND
31
GND
33
GND
Floppy
Function
2
FDHDIN
4
Reserved
6
FDEDIN
8
Index-
10
Motor Enable
12
Drive Select B-
14
Drive Select A-
16
Motor Enable
18
DIR-
20
STEP-
22
W rite Data-
24
W rite Gate-
26
Track 00-
28
W rite Protect-
30
Read Data-
32
Side 1 Select-
34
Diskette
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