5-11 Floppy And Hard Disk Drive Connections; Floppy Connector - Supermicro 7034A-T User Manual

S W
UPER ORKSTATION 7034A-T/7034A-i Manual

5-11 Floppy and Hard Disk Drive 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.
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
JD1. See the table below for pin
definitions.
The connector with twisted wires
Floppy Connector Pin Definitions (JD1)
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
5-22
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 Write Data-
24 Write Gate-
26 Track 00-
28 Write Protect-
30 Read Data-
32 Side 1 Select-
34 Diskette