Commodore Amiga AS90 Hard Drive Plus User manual

C:

Commodore

® E - -

AMIGA

®

~£

_

HARD DRIVE PLUS

USER'S

GUIDE

DRIVE

INFORMATIO

N

For later reference, please record the information listed on the bOllom

of

the

AS90

in

the spaces provided below.

TYPE:

______

__________________________

_

MANUFACTURER:

____________

__________

_

MODEL:

____________________________

_

NUMBER OF CYLINDERS::

____

______________

_

SECTORSPERTRACK::

____________________

__

NUMBER OF HEADS:

__________

_

SERIAL NUMBER::

__________________

____

_

DRIVE TYPE: (Circle one)

XT / SCSI

C:

Commodore

®

~

- -

AMIGA

®

~~-

_

HARD DRIVE PLUS

USER'S

GUIDE

COPYR I

GHT

Thi

s manual .

1:

)

19

89

Commodo

re

-

Amiga

. Inc ..

All

Ri

~hls

Reserved.

Thi

s document may nO

I,

m who

le

or

in

pari

be

copied, photocopied. reproduced.

tran

slated, or reduced 10 any

elc

~"

Ironic

f1l('dium or

ma

c

hine

readable

form

.

without

prior

co

ns

ent,

in ""riling.

fmrn

Commodore

-Amiga. Inc.

With

Ihis dOCUlTI(nt,

Commodore-Amiga

makes no warranti{'

",

or

guaraflll!c

~.

ejlhN

nj)re

v,cd

or impl

ie

d.

wilh

respect to

t~

products

de

scribed. their

fUrK:liona1i

'

~

'

.

compatibility.

or

3\ail

·

ability.

FUrl~

r

.

Commodo

...

!-

Am

iga ass

um

es no re<;pomitJility or liabilit}' for

"

Ialemcnl

~

or

repre!!cmali

ons

made by itSelf

or

by

th

i

rd

party

vendor-. or in

the

puhllc

ation'

repr(ldu~'ed

herein. IN

NO

EVENT

WI

LL

CO

MMODORE

-

AM

I

GA

BE

LlAHLE

FOR DIRi:.

CT,

I

ND

I·

RECT. INCI

DENTAL.

OR

CONSE

QUENT

I

AL

DAMAGE

S

RE

SULTING FROM

ANY

C

LA

IM

ARIS

IN

G

OUT

OF

THE

REPRESENTATIONS

MADE

HEREIN. [VE:-.I

IF

IT

HA

S BEEN

ADVI

SE

D OF

THE

PO

SS

I

BILITIE

S OF SUCH DAMAGES.

SO

~1E

STATES

DO

NOT

ALLOW

THE

EXCLUSION OR

LIMI

TATION OF

SUC

H WARRANTIES OR

DAMAGES.

SO

THE ABOVE EXCL

US

IONS

OR

LIM

IT

AT

IONS

MAY

NDT

A PPL

\'

.

Inf

orma

tion in this document is subject to

change

",;,h(\u! nOlice and docs nOI represent a

commitment

on

the

part

of

Commodo

r

e-

Amiga.

The

software de

sc

ribed

in

Ih

i'

d

oc

ument

i

~

furni~d

under aiKen$(' agreemem or

n

o

nd

isclo

~

urc

agreemt'nl. 11

b.

a

g:t

im

t t

he

la

....

10

l'O

p~

Ihi\

sof",

"'

are

on

magnetic

tape

.

di

sk.

or

an

y athel medium for any pUr

ptN::'

O

lh

er than

lhe-

purcha!>er'~

personal

use

.

Anllga

i~

a

reg

i

stere

d trademark

of

Co

mm

odo

re

-

Ami

ga. In

c.

Cummod

ore

:tlld the Commo-

dore 10iO are registered

trademarks

of

Com

modore Eleclro

ni

c\

Limited.

1\

-IS·

00

S

i~

..

1

re.cl'"

lered

trademar

k

of

the Microsoft

Corpo

ration. PC :XT j, a Tegi",ered

Iradclllar~

of

Ir

Hcrna-

lional

Bu

sineu

Ma

chines,

Inc .

UN

IX

i~

a regis

terc=d

Irade=mark

of

AT&T.

Ep

~(l

n

10,

3

rc=

gi~

t~r~d

Iradt-mark

of

Epson

Amc:rka,

Inc.

SeagalC=

is a

f~gl

sl

crcd

trademar

k

of

Scagate

Te

c

hnolog

ies.

Inc.

WARN

I

NG:

Th

is

equ

ipnl(nI

has

bttn

c

enifi

c=

d 10

comply

v.ilh

the

limits for a Class B

..::o

mpul-

ing

devicc=.

pursuant

to

s

ubpart

J of

Pan

15

of

the

F

ederal

Comm

un

i

c

alion

~

Commissions

rules.

and

Standard

C I

08.8·

M 1983

of

the

Ca

n

adian

Slanda

rd

~

A

S~

OC

l

ation'

)

regulation

...

T~

ru

les a nd regul

ations

are

de

signed to

provide

rcaso

nahle

protcc

tion

again

st

radio

and

te1ev

i

~ion

interference in a residential

insta

llation . H

Tl

C'l

in'ta

lled

properl

y.

in "

tr

iet a

ceor·

dano.:e

.....

ith

the

ma

nufactu

rer's

ins

truction

s.

it

may

cau,e

interference. If you

~tI~

P~(t

illlcrf\.·r-

erlCe. you

ca

n test this

equipment

by

turnin

g

il

on

and

off. If

thh

('4uipment d

oe,

c

au

se

interference.

COf

rect

it

by

doing

any

of

the

following:

•

R

eor~

ntl~

receiving

antenna

or

plug .

•

Cha

nge

the

relati\,(, positions

of

the

peripheral

and Ihe receiver.

~

Plu

g

the

equipment

into

a different outlet

so

thai

the

peripheral

and

recei' er

arc

on

different

circuils.

C

AUTION

:

Only

equipment

with

shield-gr

ounded

cables

(

cO

mpUleT

input

-output

de\ice

~

.

ter-

m

Lnal

s.

printe

rs. et

c.)

,

ce

rtified 10

co

mply

with

Cla

ss B limits. c

an

be

all

a

ched

to this deviet'.

Oreration

with non-ce

rtif

ied

equipment

may

result in

communica

tions illlerferenee.

)'

('I

UT

house AC wall

receptacle

must

be

a three-

pronged

type (AC'

ground)

. If

nm.

co

nta

ct

an

ck(trician

to install

the

proper

receptacle

.

If

a

multi

-co

nTlC1:tor

box

is used

to

":('I

nnect the

(Ompu

tl'r

and

peripherals

to AC'.

the

grou

nd

mu

~t

be

common

to

all unit

).

I f

ne(c~sary.

contact

your

Commodore

dealer

or

an

expc=ricl

'k.'

cd

radio

·

TV

t

et.

:

hm

ci

.m

for

addi

-

tional

\

uggc"'ion~

.

Y

ou

may

find

the following

FC

C'

b

oo

klet

help

ful : " How

10

Id

entify

and

R

c\olve

Radio-

TV

InterfercO(e Problem>;

."

Th

e

boo

klet i

..,

availab

le from the U.S. Gt,,,,:rn-

men I

p,

i nt ing

Office.

\\'a

shi

ngt0n,

D

.C.

20402.

stock

no

.

()()..l-()()()

·{

IOH5-

-'

.

Contents

INTRODUCI

NG

THE

A590

..

....

.

............

.

.............

.

..

.

STALLING

THE

A590

..

............................

.

........

3

Installation

Pr

ocedure

..

......

..............................

3

Connecting External SCSI Devices

.....................

.

......

8

In

stalling R

ando

m Access Memory (RAM) Chips

....

.

...........

8

US

IN

G

THE

HARD

DISK

...........................

..

.

....

.

....

15

Copying Programs to Your Hard

Di

sk

....

.

...

.•.

..

. .

..

.

..

.

....

15

Saving/

RelTie

v

in

g Files .

........

.

......

..

. .

.•.

..

. .

....

...

.

19

Backing Up Your Hard

Di

sk

...

........

..

...

.

....

.

...

........

19

Re

coverable Errors

........

.

...............

. . .

.........

20

Nonrecoverable Errors

.............

........

.

..

....

.

20

CHANGING

THE

STA

RT

UP·SEQUENCE

.

.........

.

.............

23

THE

A590

SETUP

DISK

...

.....

.

..

..........

..

.................

25

Ki

cks

taTl

1

.3

Users

......

..

.....•..

.

..

. .

......

.. ..

...

•.

....

.

25

Ki

cks

taTl

1.2 Users

.............•.

. . .

.........

.

...

.

....

.

....

26

Quick

In

stallation

...

..

...

..

........

.

....

. . .

........

26

Using the A590 Setup

Di

sk

..................

.

.........

...

....

27

Using the

In

stallation Soflware

....................

.

....

. 28

Usi

ng the

HDT

oo

lbox

Pr

og

ram

..........................

34

Hard Drive Preparation, Pa

Tliti

oning and Formalling

...

35

Change Drive Type

.....

.

.......

.

...

.

.............

39

Define/ Edit Drive Type

.........

.

................

.41

Bad

Bl

oc

ks

.....

.

............

..•.......

:

...

.

..

. . .43

Parllllonmg

....

..

..............

.

................

44

File

Sys

tem Characterist ics . .

..

.

....

.

..

.

.........

. . .49

File System Maintenance

.......

....

.....

..

.........

51

APPENDIX

A TROUBLESH

OOTING

...

....

....................

53

APPENDIX

B DIP S

WIT

CH SETTINGS

...........

...

..........

54

APPEND

IX C

TECHN

ICAL

SPECIF

ICATIONS .

......

..

. .

.....

55

APPENDIX

D SOME USEFUL

TERMS

....................

.

....

61

Introducing

the

A590

The AS90

Hard

Drive Plus

is

an external hard disk drive plus a controller

card and expansion memory unit for the Amiga

SOO.

The AS90 connects to

the side

of

the Amiga

SOO

and comes with a disk containing all the software

required for operation.

The AS90 includes the following features:

• 20

MB

of

disk

slO

rage.

• Sockets for SI2KB, 1MB, or 2MB

of

fast random access memory

(RAM)

chips.

• Direct Memory Access (DMA) for fastest possible operation.

• ConneclOr for the use

of

Small Computer Standard Interface

(SCSI) expansion devices.

• Autoboot ROMS to allow you to boot your system from the hard

drive, if

you

are using

Kickstan~

1.3.

Note:

To

obtain the full potential

of

the AS90,

you

will want

10

have the

Kickstan 1

.3

ROM

upgrade installed

in

your Amiga

SOO.

With the Kickstan

1.3

ROM

s you will be able to automatically

boO!

your system from the AS90,

providing faster access to all your files.

You

can determine whether your Amiga has Kickstan 1.2 or 1.3 by

staning

your system without a disk

in

the floppy drive. The screen

will

show a hand

holding a Workbench disk, with the version number below

it.

If the version

number

is

1.2, your. Amiga is using Kickstart 1.2. Please see your Amiga

dealer concerning the

ROM

upgrade.

If

the version number

is

1.3, your

Amiga already has Kickstan 1.3.

This user's guide explains how to:

• connect and set up the AS90.

• connect external SCSI devices.

• install RAM chips on the AS90 board.

• use the HDToolbox software to set up and configure your

hard disk.

•

use

the

reinstallation software

(0

rebuild

you

r hard

disk

in

the

event

of

a catastrophic loss

of

data.

Note that with the addition

of

the A590, your system will still operate nor-

mally using the floppy disk drive.

Installing

the

A590

WARNING: Commodore will not be responsible for any injury

or

damage

resulting from improper installation. Such improper

in

stallation will also

void the warranties on the A590 and the Amiga 500. Read this manual before

attempting to

in

stall the A590. Turn the computer

off

and unplug the power

cord before proceeding. Installing the A590 with the power on could cause

personal injury to

yo

urself and damage to the equipment. Make sure that

nothing is attached to the computer. Disconnect all peripherals and power

cords, and put them aside. The A590 requires adequate ventilation. Do not

block the openings in the A590

or

place

it

in

an enclosure

or

on

a carpet.

Most hard disk failures

occur

due to improper handling: never subject the

A590 to electrical

or

ph

ys

ical shock.

Unpack the A590 a

nd

make sure that

you

have a

ll

the requir

ed

part

s:

• A590 hard disk drive.

•

gro

und clip.

• power supply.

• A590 setup disk

• warranty card.

Record the information

li

sted on the bottom

of

the A590

on

the inside cover

of

this manual.

Installation

Procedure

The following steps, required to install the A590, are explained

in

detail,

heginning on the next page.

I. Turn

off

and disconnect the A500.

2.

Set the

DIP

sw

it

ch

es

at the back

of

the A590.

3.

Open the side panel

of

the Amiga 500.

4.

Co

nnect the ground c

li

p 10 the Amiga 500.

5.

Co

nnect the A590 to the Amiga 500.

6.

Co

nnect the power supply to the A590 and AC outlet.

J

1.

Turn

off

and

diseonnect the A500.

Thrn

off

the

ASOO,

and

unp

lug

th

e power cable. Disconnect a

ll

peripherals

and c

ab

les from the

ASOO.

2. Setting the

DIP

switches.

There

are four

DIP

switches l

oca

ted at the back

of

the AS90.

The

sw

it

ches

are

shipped in the

off

pos

iti

on

.

If

you

are

using

Ki

cks

tart

1.3

you will want to

set

DIP

switch I

to

on.

If you

are

using

Ki

cks

tart

1.

2 you

ca

n

co

nnect

th

e

AS90 with

th

e

DIP

switches in

th

e cu

rren

t p

os

itions.

Note: If yo

ur

Wo

rkb

ench

m

prompt

requests Workbench 1.3,

yo

u

are

using

Kicks

tart

1.

3.

If

it

requests Wo

rkb

ench 1.2, you are using K

ic

ks

tart

1.2.

DIP

switch I enables and disables

th

e

Aut

oboo

t ROMs.

DIP

switch 2

co

n·

trois whether the syst

em

will l

oo

k for more

than

one drive at each l

og

ical

SCS

I

add

ress.

DIP

switch 3 sets a long or short

de

lay between when you

turn

the power on

and

when yo

ur

system checks the drives. DIP switch 4 is

reserved for later use.

DIP

sw

it

ches 2

and

3

are

o

nl

y used with external

SCS

I

drives. For more information

on

th

e 01 P switches refer to Appendix B .

'.

::

"

..

'.

"

...

'j

.

~

.

:

" .

• •••••••••••••

••••••••••••

po

.....

er

C

onoeclOf

•

ole:

Each

switch is

off

when in the

down

position,

and on when in the

up

posirion.

4

The A590 is supplied wilh a

ll

swilches ofr. The AUlobool

ROM

s

are

disabled;

Ihe

sYSle

m will l

oo

k for only one device al each physical address; and Ihe

sys

tem

will

allow a sho

rt

amount

of

time

between

when

it

powers

up

and

when

il

checks Ihe dri

ves

.

3.

Op

ening t

he

A

mi

g.

500.

There is a panel on Ihe l

ef

l

si

de

of

the compulcr Ihal mu

Sl

be removed

10

ex

pose Ihe

co

nnecl

or

la

b

10

be used

by

the A590. In

sen

a small screwdriver

in Ihe SIOI, and

puillhe

panel down and away from Ihe computer.

4.

Co

nnecting the grou

nd

cl

ip.

The ground clip muSl be connecled

10

the ground s

hi

e

ld

of

the A500.

Th

e

ground s

hi

e

ld

is

a Ihin sheel

of

metallocaled

in

Ihe expansion S

IOI,

bel ween

Ihe connector

tab

and the plaslic housing on Ihe bOllom

of

the A500.

Th

e

re

is

a thin sheel

of

plaSlic or c

ardboard

in

sulalion on

lOp

of

Ih

e ground shield.

C

Qflntt

lOf

b

..

\

.

\ \

,

~

Y

''''''nd

/

\h~kI

5

./

/'

~

\

'"'

uta! IOn

""'"

Insert the top

of

the ground clip, the side with the red

in

sula

ti

on, between the

plastic or

cardbard

sheet and the ground shield, as shown

below.

Note that the

bOllom

of

the ground clip fits under the housing

of

the A500.

bouom

or

Aloo

housino

insulation

......

,,,,,,

",,

sIridd

",(lUnd

clip

-

Note:

If

you

wish to connect

an

external SCSI drive or install RAM chips

please refer to tbe appropriate section before connecting the A590 to the

A500.

5. Conneeling the A590 to the Amiga 500.

Align the connector on the side

of

the A590 with the tab on the left side

of

the

computer. Slide the A590 directly towards the computer umil the casings

almost touch. Do not force the A590. If the A590 seems to

be

s

lU

c

k,

pull

it

directly away from the computer and realign the connector.

6

6. Connecting lhe power supply.

The A590's power supply brick has a AC power cable

and

a 4'pin cable

allached to it. The 4-pin cable connects to the back

of

the A590. Align the

pi

ns with Ihe socket on the A590 and insert the cable. Connect the power

cable to a grounded AC ou

tl

et.

Reconneci all cables and peripherals to the computer. Thrn the power on

to

the Amiga 500. The A590 has been designed so that the A590 turns on and

off with the Amiga 500 .

.

Note: Befo

re

us

in

g the A590

for

the first time

you

should run Verify 001 a on

Dri

ve

from HDToolbox on Ihe A590 Setup disk. This

will

c

heck

to

see if any

disk blocks ha

ve

been damaged during shipment .

I. With the A590 connecled, boot your system with the A590

Se

lup

disk

in

the floppy drive.

2. Double

-cli

ck on the A590 Setup icon.

3. Double-

cli

ck on the

HO

Toolb

ox

ic

on.

4.

When the Hard

Di

sk

Pr

epara

ti

on, Partil

io

ning a

nd

Fo

rmalling

sc

reen appears, cl

ick

on

Ve

rify Oala on Dri

ve

.

Wh

en prompled

by

the requestor, click on

Co

ntinu

e.

7

5. If

lh

e verification finds

11

0

crror~,

you

GlIl

di

ck on Exit

and

con-

tinue n

or

mall

y.

If

any

er

ror,

arc

fo

un

d

yO

ll

~

tlOuld

Exit

and

then

rLin

PrepHIJ

and

Formal/H)

'"

d

escribe

d

Lind

er

U

sin

~

the

Instal·

lation

So

ftware

.

on

pag

e 28.

YOllr

A590

is now in

sta

ll

ed. If

yo

u

ar

e

110t

going

to

co

nnect

an

externa

l

SCS

I

drive.

or

add

RAM

c

hip

s. please

go

to

The

A590

Se

tup

Disk on page 25.

Connecting External SCSI

Devices

You can

co

nn

ec

t

up

to s

even

ex

ternal CSI devices 10

th

e

A5

90, using

the

con

n

ector

at

the

back

of

th

e

A590

. To

connect

the first

SCS

I device. gently

insert {he devi

ce's

c

on

n

ector

into

th

e A 590'

;;

con

neclOr

and

"icc

ur

c

th

e screws.

Th

e

SCS

I device will need to have its own power s

Lippl

y.

Additional

SCS

I

devices c

an

be

co

nnected in a

dai

sy-chain. (

Th

e

fi

rst pe

ri

pheral dc\'i

re

co

n-

nec

tS 10

the

A590,

I he second device

co

nn

ect

~

to

Ille.?

fir\1 device.

and

"0

on.)

For

inf

ormation

on

DIP switch settings for external

SCS

I driv

es

refer 10

Appendi,

B.

Installing Random

Access

Memory (RAM) Chips

You

ca

n ins

tall

RAM

c

hip

s in

the

A590 to increase the me

ill

ory available

to

yo

ur

Ami

ga

500. Y

ou

ca

n install 512K B, I

MB

or 2M B

of

add

itional m

emo

r

y.

Note: Use only C

MO

S 2S6k x 4

DRAM

s.

with

an

access speed

of

120 ns

or

faster. Slower

DRAMs

will

not

work

properly

.

Do

not

use

:-I

MO

S

DR

AMs.

The

use

of

NMOS

DRAM

s will

damage

the

AS90

and

void your

warranty

.

RAM

chips

are

sensitive

to

s

tatic

elcctricily.

Co

nt

act

with

a c

hip

when

hi

gh

levels

of

static elf'Ctricity

are

present

co

uld

ruin

a c

hip.

Touching

a

ncarb)'

gro

und

ed

metal

s

urfa

ce

be

fore

touchin

g

the

c

hip

ca

n help

rrdu

ce stat

ic

I{'nls

.

8

In

sta

ll

a

ti

on

of

RAM chips should

be

performed

by

an authorized Commo-

dore Ser

vi

ce Ce.nter, or

by

yo

ur Commodore dealer. Commodore will not be

responsible or liable for any damages caused by improper insta

ll

ation

of

RAM chips.

WARNI

NG

: If your A590

is

connected

10

the computer,

you

mu

st first turn

off the power, disconnect a

ll

cables and peripherals, and detach the A590

from the computer

by

carefu

ll

y pu

ll

ing the A590 directly away from the

A500.

The following steps, required to install RAM chips, are explained

in

detail

be

l

ow.

I. Remove the A590's cover.

2.

Remove the dr

ive

a

nd

the drive shield.

3. Insert the RAM chips.

4. Set the RAM size jumper.

5.

Replace the

dr

i

ve

and the cover.

1.

Rem

ov

in

g t

he

AS90's cover.

Locate t

he

two screws on the connector side

of

the A590. Loosen these

sc

rews,

but

do

not

remove

them.

Locate the eight screws on the bottom

of

the A590. The outer four connect

the cover to

the

base and the inner four connect the drive and

the

drive shield

to

the

base. Remove

the

outer

four

and

set

these screws aside.

9

•

® ®

®o

•

®

.,

•

. )

.,

®

.,

®

•

• 0 0

-

drive

se

re

....

s

Place the A590 on a flat s

urfa

ce and car

efu

ll

y lifl the cover straight ofr.

Di

sc

o

nn

ec

t

the

fan

power cable from

the

printed circuit board in

the

ba

se

of

the A590.

NOle

lhe alignment of the

LED

ca

bl

e

if

the

re

is one, so that

it

can

be reconnected properl

y.

Di

sconnect the

LED

c

ab

le and put the cover aside.

10

2. Removing

th

e d

ri

ve

a

nd

th

e drive shie

ld

.

Locate the ribbon cable connector and the power cable connector and note

how

they connect to the board, so

you

can reconnect them properly. Discon-

nect them from where they attach to the board. Always handle each ca

ble

by

the plastic connector.

Remove the four remaining screws, and put them aside, separate from the

first four screws. Lift ,the drive and shield

off

and put them aside in a safe

place. Place the drive on a soft, non-conduc

ti

ve

surface. Do not subjecl

Ih

e

d

ri

ve

10 shock.

I I

3. Inserling lhe

RAM

chip

s.

NOIe:

Be

careful

10

properly align lhe chips

hefor.

inserling

lhem.

Do

nol

force Ihem

or

bend lhe pins.

Turn

Ihe A590's

board

so Ihal

it

matches

the

illuslralion on

the

nexi page.

It

is

important

that

the chips be inserted properly. Each chip

has

a notch

or

dot

on one end to show the l

oca

ti

on

of

pin I.

When

the

end

with the notch

or

dot

is held to Ihe left, pin

I will be in the lower lefl

co

rner.

The

chip

should then

be

in

serted

so

that

the notched

end

is towards the l

eft

of

the

board.

The

local ion for pin I is circled in the illustration below. Align the chip wit h Ihe

socket

and

insert

it

wi

th s

li

ght

pre

ss

ur

e. I f you

are

in

sta

lling 512 kilobyles

of

memory (4 chips), insert them in the four

soc

kets label

ed

SI2K. If you

are

installing I megabyte

of

memory

(8

chip

s), insert

th

em in the eight sockets

labeled

St2K

and

I

MEG.

If

you

are

insta

lling 2 megabyt

es

of

memory (16

chips), insert Ihem in all

16

soc

kets.

4. Selling lhe

jumper.

You

must sel a

jumper

on

Ihe

board

10

match Ihe

amount

of

RAM

inSlalied.

As shipped. the

jumper

is set to

"Amn

esia" ,

or

no

RAM

insta

ll

ed. Lift Ihe

jumper

straight

off

and

replace it on the set

of

pins labeled the

sa

me as Ihe

amount

of

RAM

inslalled.

S.

Replacing lhe drive and

the

cove

r.

Replace

the

drive and the drive shield. Reconnect the

ribb

on

cab

le

and

Ihe

power cable.

Make

certain

that the

co

nnectors

and

the pins are aligned prop-

erly.

The

power

cab

le

co

nnector is s

haped

so that

it

c

an

only fit the

co

rrect

way.

Replace the four

Sc

rews to hold the dri

ve

and

shield in place. Reconneci

the fan's power cable to

th

e

board

. Reconnect the

LED

cab

le if there

is

one.

Replace Ihe cover

and

install

the

four screws. Tighten the two screws

on

the

conneclOr side

of

the A590.

t2

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13

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Commodore Amiga AS90 Hard Drive Plus User manual

Commodore Amiga AS90 Hard Drive Plus User manual

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