Computer Hardware User Manual

2-40
X8STi/X8STi-F/X8STi-3F/X8STi-LN4 User's Manual
LSI 1068E
NIC4 LED
JBMC1
A
A. Floppy
Floppy Connector
The fl oppy connector is located next
to the I-Button on the motherboard.
See the table on the right for pin
defi nitions.
Floppy Drive Connector
Pin Defi nitions
Pin# Defi nition Pin # Defi nition
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
Note the following when con-
necting the fl oppy cable:
• The fl oppy disk drive cable has
seven twisted wires.
• A red mark on a wire typically
designates the location of pin 1.
• A single fl oppy disk drive ribbon
cable has 34 wires and two con-
nectors to provide for two fl oppy
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.