Western Digital WDAT-140 Bedienungsanleitung

Western Digital Corporation v

Introduction

Western Digital manufactures three AT adapter boards for use

with intelligent or integrated hard disk drives. These drives have their

own controller electronics mounted directly on the drive assembly.

Many AT systems require an adapter card in order to accommodate these

drives. The WD-AT adapter boards all provide an integrated hard disk

interface that sup-ports two daisy chained drives. The WDAT-240 and

WDAT-440 also provide a floppy controller which can support two daisy

chained floppy drives. Two serial interfaces and a parallel interface are

available on the WDAT-440.

MODEL DESCRIPTION

WDAT- 140 Provides one hard drive interface

WDAT-240 Provides one hard drive interface

and one floppy drive controller

WDAT-440 Provides one hard drive interface,

one floppy controller, two serial

ports, and one parallel port

Unpacking The Adapter Board

CAUTION

Hold the adapter board by the ends. Static electrical

discharge can permanently damage components if the

board is not carefully handled.

Remove the board from its anti-static pouch and inspect it for any

visible signs of damage (scratches, loose components, broken

connectors). Contact the dealer if there is damage.

Retain any packing materials for reuse if it becomes necessary to

return your WDAT board.

Installation Guide

This board does not work with XT drives or systems. If you have an

XT drive and system, you need the WDXT-140 or WDXT-150.

You need to know the types of devices that you plan to connect to

your adapter board in order to configure the board properly.

Identify Board

Figures 1-1 through 1-3 show the connector and jumper locations

for the WDAT- 140, WDAT-240, and WDAT-440 adapter boards.

Look at the illustration for the board you are using and locate

each connector and jumper block. Familiarize yourself with these

locations. Note that the connector and jumper names are also marked on

the board itself.

CAUTION

Handle the WDAT by the ends of the board. Some of the

chips are static sensitive and damage may occur if the

board is incorrectly handled.

Figure 1-1. WDAT- 140 Adapter Board

Installation Guide

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Figure 1-2. WDAT-240 Adapter Board

Figure 1-3. WDAT Adapter Board

Installation Guide

1-4 Western Digital Corporation

Jumpers

Installing a jumper shunt or removing a jumper shunt from the

pins on a jumper block turns certain functions on or off. These functions

define the peripheral hardware to your computer.

Western Digital configures the jumpers for the most common ap-

plications. It is unlikely that you will need to change any of the jumper

settings.

Jumper Settings for the WDAT-140

The WDAT-140 board contains one jumper block, W1, which

allows the DIRQl4 signal to pass directly to the host.

Do I Need to Change Any Jumpers?

No. Do NOT change any jumper settings on your WDAT- 140

board, unless you have an original Conner CP342 or CP3022 intelligent

drive in an IBM AT. The factory default jumper setting is shown below.

Jumper settings are discussed in detail in Appendix B, Table B-1.

If you need to change the jumper settings, do this before you

install the WDAT- 140 board into your computer. You change the

jumper settings by installing or removing the jumper shunts on the W1

jumper block. Go to Appendix B for exact instructions BEFORE you

change the jumper settings. If you do not need to change the jumpers,

you can proceed to Chapter 2.

Jumper Settings for the WDAT-240

The WDAT-240 board contains four jumper blocks (W1, W2, W3,

and W4) which define hardware parameters. By moving the jumper

shunts, you can change the definition of the hardware which is attached

to your computer. The jumpers must be configured to match your system

hardware.

Installation Guide

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Do I need to Change Any Jumpers?

Probably not. We recommend that you not change any of the

jumper settings unless you have one of the following conditions:

•You have an original Conner CP342 or CP3022 intelligent

drive in an IBM AT.

•You want to disable the floppy drive controller or set an

alternate address at 370-377.

•You have a two-speed floppy drive.

•You want to connect logic ground to the chassis.

The factory default jumper settings are shown below. WI jumper

block allows the DIRQ14 signal to pass directly to the host. Jumper

blocks W2 and W3 define the floppy address and floppy drive speed. W4

defines the ground connection. Jumper settings are discussed in detail in

Appendix B, Tables B-2 through B-5.

DIRQ14 passed directly to host bus 13

Floppy controller enabled

Floppy primary address is 3F0-3F7

Single speed floppy drive

(Dual speed floppy drive is selected, if this jumper block is

installed and jumpered.)

Logic ground is not connected to chassis

(Logic ground is connected to chassis, if this jumper block

is installed and jumpered.)

If you need to change the jumper settings, do this before you

install the WDAT-240 board into your computer. You change the jumper

settings by installing or removing the jumper shunts on the jumper

blocks (WI through W4). Go to Appendix B for exact instructions

BEFORE you change the jumper settings. If you do not need to change

the jumpers, you can proceed to Chapter 2.

I nstallation Guide

1-6 Western Digital Corporation

Jumper Settings for the WDAT-440

The WDAT-440 board contains seven jumper blocks, W3 through

W9, which define hardware parameters. By moving the jumper shunts,

you can change the definition of the hardware which is attached to your

computer. The jumpers must be configured to match your system

hardware.

Do I Need to Change Any Jumpers?

Probably not. We recommend that you not change any of the

jumper settings unless you have one of the following conditions:

•You have an original Conner CP342 or CP3O22 intelligent

drive in an IBM AT.

•You want to set an alternate address at 370-377.

•You have a two-speed floppy drive.

•You want to change printer port or serial port definitions or

addresses. You can change the jumper settings to re-configure

the parallel port as LPT2. You can also re-configure the

external serial port as COM3 and the internal serial port as

COM4 by moving the jumpers.

•You want to connect logic ground to the chassis.

The factory default jumper settings are shown below. Jumper

blocks W3 and W9 define the hard disk drive interface and W4 and W5

define the floppy address and floppy drive speed. The jumpers at W7 and

W8 define the parallel and serial ports. W6 defines the chassis-to-ground

logic (chassis ground is independent of logic ground). Jumper settings

are discussed in detail in Appendix B, Tables B-6 through B-12.

If you need to change the jumper settings, do this before you

install the WDAT440 board into your computer. You change the jumper

settings by installing or removing the jumper shunts on the jumper

blocks (W3 through W9). Go to Appendix B for exact instructions

BEFORE you change the jumper settings. If you do not need to change

the jumpers, you can proceed to Chapter 2.

Installation Guide

Western Digital Corporation 1-7

W3 DIRQI4 passed directly to host bus

W4 Floppy controller enabled

Floppy primary address is 3F0-3F7

W5 Single speed floppy drive

W6 Logic ground not connected to chassis

W7 COM 1 Interrupt = IRQ4

COM2 Interrupt = IRQ3

Parallel printer interrupt = IRQ7

W8 Internal serial port = COM2 (2F8-2FF)

External serial port = COM1 (3F8-3FF)

Printer address, LPTl = 378-37F

Printer enabled

W9 Hard disk drive enabled

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