Chapter 2: Installation
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 Drive Connector
Pin Definitions (Floppy)
Floppy Connector
The floppy connector is located at J22. See the table below for pin definitions.
Pin# | Definition |
1 | Ground |
3 | Ground |
5 | Key |
7 | Ground |
9Ground
11Ground
13Ground
15Ground
17Ground
19Ground
21Ground
23Ground
25Ground
27Ground
29Ground
31Ground
33Ground
Pin # Definition
2 | FDHDIN |
4 | Reserved |
6 | FDEDIN |
8 | Index |
10Motor Enable
12Drive Select B
14Drive Select B
16Motor Enable
18DIR
20STEP
22Write Data
24Write Gate
26Track 00
28Write Protect
30Read Data
32Side 1 Select
34Diskette
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| Fan7 | 17 |
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KB/MS0/1 USBCOM1 |
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| J9B1J9B2 J8B2J8B3J8B1 |
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JKM1 |
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JCOM1 |
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| Battery | J7B2 |
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VGA |
| Bank1 |
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| J7B1 |
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J15 |
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LAN1 |
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| LE1 |
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| Intel 5000 |
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JLAN1 |
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LAN2 |
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JLAN2 | UID |
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SW1 | Rear |
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| Fan8 |
J11 | J14 |
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| 9J | 5J |
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LE2 UIO PWR |
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| I2C2 | I2C1 |
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| J28 | J27 |
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| X7DBU | SXB1: |
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| Intel ESB2 | J29 |
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| yromeM | IOSB |
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| JWOR1 | JBT1 |
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| J7 |
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| JPG1 |
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| ES1000 |
| oedi |
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| V |
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| J18 |
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| Video CTRL |
| JWD |
| I/O |
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| JK1 |
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| SMB | J22 | |
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| S |
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| COM2 |
| JWOL1 |
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| JL1 | |
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| USB2/3 |
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| JPL1 | JPL2 | USB4 |
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| Fan4 | ||
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A
A. Floppy Port
