Bull R425-E2, Инструкция по установке и эксплуатации

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Chapter 5: Advanced Serverboard Setup
5-37
5-14 Floppy, Serial ATA and SAS Connections
Note the following when connecting the floppy and hard disk drive cables:
The floppy disk drive cable has seven twisted wires.
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A red mark on a wire typically designates the location of pin 1.
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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 next to
the Super I/O chip on the motherboard.
See the table on the right for pin defini
-
tions.
Floppy Drive Connector
Pin Definitions
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: Floppy