NorthStar Horizon Bedienungsanleitung

""'l..

f\brthSbrCompulerslnc

2M7

Ninth Street

Berkeley, Co,

94710

Horizon

Computer

System

Double

Density

Nor1'h

Star Computers, Inc,

HRZ·D·DOC

Revision 1

INTROD~CTION

The

North

Star

Computers

HORIZON™

high-performance,

Z80A

based

microcomputer

system

which

especially

suited

for

business,

educational,

and

software

development

applications.

features

fast-access

disk

storage

integral

part

the

package,

MHz

microprocessor

operation,

and

built-in

I/O

capability.

The

HORIZON

uses

the

S-100

bus

structure,

allowing

large

selection

compatible

products.

The

system

will

support

disk

drives,

allowing

716K

bytes

on-line

disk

storage.

Powerful

system

software,

including

North

Star

Disk

BASIC,

Disk

Operating

System,

and

Monitor

program,

are

provided

diskette

with

disk

versions

the

HORIZON.

The

HORIZON

compatible

with

nearly

all

programs

previously

written

for

8080

Z80

based

machines.

North

Star

BASIC

programs

which

run

the

North

Star

MICRO-DISK

SYSTEM

will

also

run

the

HORIZON. A

list

the

growing

number

HORIZON-compatible

applications

programs

included

the

North

Star

Newsletter,

which

you

will

receive

after

filling

out

and

returning

vour

Warranty

Card.

you

have

purchased

your

HORIZON

kit,

then

skim

this

manual

completely

once,

and

then

carefully

the

instructions

sequence.

sure

read

the

Assembly

Information

section,

even

you

are

experienced

kit

builder.

you

have

purchased

assembled

HORIZON,

sure

read

the

Using

the

Serial

Interfaces

section

for

instructions

connecting

terminal.

You

need

only

read

the

assembly

and

checkout

sections

for

complete

understanding

how

your

computer

built.

course,

you

plan

maintain

the

HORIZON

yourself,

the

checkout

steps

will

very

important.

important

for

every

HORIZON

user

familiar

with

the

Operation

and

Maintenance

section,

and

all

sections

this

manual

and

the

accompanying

manuals

describing

the

North

Star

software.

There

lot

material

presented

here,

but

you

will

obtain

far

performance

from

your

computer

you

take

the

time

read

about

all

its

capabilities.

The

HORIZON

documentation

includes:

HORIZON

Computer

System

Manual

North

Star

Z80A

Processor

Board

Manual

North

Star

16K

RAM

Board

Manual

North

Star

System

Software

Manual

SA-400

minifloppy

OEM

Manual

Z80

Technical

Manual

TABLE

CONTENTS

Introduction

GENERAL INFORMATION

Limited

Hardware

Warranty

Limited

Software

Warranty

Cautions

Software

License

PARTS

LISTS

Chassis

Power

Supply

Universal

Power

Supply

Option

Motherboard

Wood

Cover

Metal

Cover

Second

Serial

Interface

Option

Parallel

I/O

Interface

Option

Disk

Subsystem

(MDS-H)

Second

Disk

Drive.

III.

ASSEMBLY

AND

CHECKOUT

Assembly

Information

Figure

lA:

Identification

Components

Figure

IS:

Identification

Sheet

Metal

Parts

Power

Supply

Assembly

Table

Power

Supply

Wires

Figures

IP,2P,lC,

Motherboard

Assembly

Second

Serial

Interface

Option

Assembly

Parallel

I/O

Interface

Option

Assembly

Disk

Drive

Power

Regulation

Assembly

Disk

Drive

Power

Regulation

and

Cable

Assembly

Chassis

Assembly

Figure

lC:

Top

view

Assembled

HORIZON-l

Processor

Board

Assembly

RAM

Board

Assembly

Disk

Controller

Board

Assembly

Disk

Controller

Board

Checkout

Integrated

System

Chec~out

TABLE

CONTENTS

(Cont.)

IV.

DETAILED INFORMATION

Disk

Controller

Theory

Operation

Disk

Controller

Configuration

Options

Disk

Drive

Configuration

Motherboard

Theory

Operation

Motherboard

I/O

Port

Addressing

Using

the

Serial

I/O

Interfaces

using

the

Parallel

I/O

Interface

using

[he

Real-Time

Clock

Motherboard

Interrupts

HORIZON

Grounding

V. OPERATION

AND

MAINTENANCE

Operation

Diskettes

Maintenance

Troubleshooting

Out

Warranty

Repair

VI.

APPENDICES

Pulse

Signal

Detection

Disk

Controller

Schematic

Drawing

Motherboard

Schematic

Drawing

LIMITED

HARDWARE

WARRANTY

North

Star

Computers,

Inc.

warrants

the

electrical

and

mechanical

parts

and

workmanship

this

product

free

defects

tor

?eriod

days

from

date

purchase.

such

defects

occur,

North

Star

Computers,

Inc.

will

repair

the

defect

cost

the

purchaser.

This

warranty

does

not

extend

defects

resulting

trom

improper

use

assembly

purchaser,

nor

does

cover

transportation

the

factory.

Also,

the

warranty

invalid

all

instructions

included

the

accompanying

documentation

are

not

carefully

followed.

Any

adjustment,

modification,

disassembly

any

disk

drive

unit

will

void

the

warranty

that

disk

drive

unit.

Should

unit

returned

for

warranty

repair

deemed

North

Star

Computers,

Inc.

defective

due

purchaser's

action,

then

repair

charge

not

exceed

$30

without

purchaser's

consent

will

assessed.

ANY

UNIT

PART RETURNED

FOR

WARRANTY

REPAIR

MUST

ACCOMPANIED

ACOpy

THE

ORIGINAL

SALES

RECEIPT.

This

warranty

applies

units

located

outside

the

United

States

America

only

all

costs

and

arrangements

for.transportation

the

product

and

from

the

factory

are

borne

entirely

the

customer.

This

limited

warranty

made

lieu

all

otner

warranties,

expressed

implied,

and

limited

the

repair

replacement

the

product.

warranty,

expressed

implied,

extended

concerning

the

completeness,

correctness,

suitability

the

North

Star

equipment

for

any

particular

application.

There

are

warranties

which

extend

beyond

those

expressly

stated

herein.

LI~ITED

SOFTWARE

WARRANTY

The

following

limited

warranty

applies

the

North

Star

BASIC,

DOS,

and

Monitor

software

delivered

diskette

with

the

HORIZON

computer.

North

Star

Computers,

Inc.

warrants

that

copy

identical

the

North

Star

master

copy

the

software

has

been

stored

the

customer

diskette

and

can

read

into

computer

RAr~

memory

from

the

diskette

properly

functioning

HORIZON

computer

using

the

Nortn

Star

disk

controller

board

and

disk

drive.

diskette

malfunctions

and

has

not

been

damaged

the

customer

and

has

not

been

operated

with

the

write-protect

tab

removed,

then

North

Star

will

re-write

replace

the

diskette

returned

North

Star,

prepaid,

within

three

months

from

date

purchase.

warranty,

expressed

implied,

extended

concerning

the

completeness,

correctness,

suitability

the

North

Star

software

for

any

particular

application.

consequential

damage

resulting

from

use

the

software

covered

this

warranty

limited

the

repair

replacement

the

original

software

diskette.

North

Star

HORIZON

Computer

CAUTIONS

Correct

this

document

from

the

errata

sheets,

any,

before

doing

anythinq

else.

2 .

Assembly

project.

building

this

product

kit

complex,

demanding

should

not

attempted

without

kit

experience.

NOT

insert

remove

any

boards

from

the

computer

when

the

power

on.

Note

that

the

power

not

off

until

the

front

panel

power

LED

has

completely

dimmed.

NOT

insert

remove

IC's

from

any

board

whlle

the

power

turned

on.

Note

that

the

power

not

off

until

the

front

panel

power

LED

has

completely

dimmed.

sure

that

all

IC's

are

inserted

their

correct

positions

and

with

correct'

orientation

before

turning

the

power.

sure

that

all

pins

are

inserted

into

the

socket

holes

and

are

not

bent

under

the

and

are

not

outside

the

socket.

NOT

connect

disconnect,

mount

dismount,

any

way

physically

tamper

with

the

disk

drive(s)

any

board

while

the

power

turned

on.

Carefully

observe

the

prescribed

rules

for

handling

the

MOS

type

integrated

circuits

and

any

board

containing

these

devices.

The

handling

procedures

are

described

the

Assembly

Information

sectior.

avoid

the

possibility

severe

shock,

NOT

touch

the

power

supply

section

the

computer

whenever

the

power

cord

plugged

into

outlet.

SOFTWARE

LICENSE

The

North

Star

BASIC,

DOS

and

Monitor

are

copyrighted

products

North

Star

Computers,

Inc.,

and

are

included

with

the

HORIZON

computer

under

the

following

license

agreement:

The

software

maybe

used

conJunction

with

the

North

Star

HORIZON

computer

and

North

Star

MICRO-DISK

SYSTEM

only.

The

customer

may

make

copies

the

software

for

convenience

use,

long

the

North

Star

copyr~ght

notice

preserved

with

eacn

copy.

This

license

specifically

prohibits

use

the

software

computer

which

does

NOT

include

North

Star

disk

controller

board,

and

also

specifically

prohibits

modification

the

software

for

use

any

system

which

does

not

contain

North

Slar

disk

controller

board.

North

Star

HORIZON

Computer

CHASSIS

PARTS

LIST

SHEET

METAL

chassis

frame

disk

drive

mounting

bracket

chassis

partition

piece

front

panel

back

panel

cover

mounting

brackets

MISCELLANEOUS PARTS

HORIZON

nameplate

serial

number

plate

plastic

card

guides

plastic

cable

ties

cable

tie

mounting

brackets

power-on

LED

with

leads

8-32

nuts

lock

washers

6-32x3/8"

machine

screws

lock

washers

ADDI TIONAL PART FOR

BORI

ZON-l

ONLY

black

plastic

face

plate

ADDITIONAL

PARTS cOR

HORIZON-0

ONLY

black

plastic

face

plates

North

Star

HORIZON

Computer

POWER

SUPPLY PARTS

LIST

transformer.

Part

No.

HRZ-Tl

180,000uf

volt

electrolytic

capacitor

11,000uf

volt

electrolytic

capacitor

8,900uf

volt

electrolytic

capacitor

cool

ing

fan

cooling

fan

grill

line

cord

line

filter,

Corcom

6EFl

fuseholder

amp

normal

blow

fuse

power

switch

bridge

rectifier.

250JBIL

stud

diodes,

MRl120

(wires

attached)

capacitor

clamp

3/8"

capacitor

clam~s

stud

diode"

mounting

bracket

1/4"x5/8"

machine

screws

1/4"

lac

washer

1/4"

nuts

6-32x3/8"

machine

screws

6-32x7/8"

machine

screws

6-32xl/2"

machine

screws

6-32x5/8"

machine

screw

lock

washers

6-32

nuts

wires

(see

Table

for

details)

wire

label

card

adhesive

backed

rubber

feet

resE't

switch

mica

washers

#10

teflon

spacers

#10

flat

washers

lO-32x3/8"

machine

screws

#10

lock

washers

10-32

nuts

UNIVERSAL

POWER

SUPPLY OPTION PARTS

LIST

transformer.

Part

No.

HRZ-TIS

(instead

HRZ-Tl)

jumper

wire

3-terminal

white

Jumper

wire

3-terminal

black

jumpE,r

wire

2.5

amp

fuse

North

Star

HORIZON

Computer

MOTHERBOARD

PARTS

LIST

I~TEGRATED

CIRCUITS

RoSISTORS

74LS03

74LS04

74LS05

74LS14

74LS132

74LS136

74LS139

74LS161

74LS241

74LS259

74LS393

1488

1489

4020(MOS)

8251(MOS)

1.2K

2.2K

4.7K

5.6K

560

220

330

100

1/4

watt

1/4

watt

1/4

watt

1/2

watt

1/4

watt

1/4

watt

1/4

watt

Watt

CAPACITORS

2.2uf

dipped

tantalum

6.8uf

dipped

tantalum

.047uf

ceramic

disc

470pf

ceramic

disc

R~GULATORS

volt,

7805

340t-5

volt.

78L12

-12

vol

,9L12

ESOCKETS

14-pin

sockets

liS-pin

sockets

20-pin

sockets

28-pin

sockets

MISCELLANEOUS PARTS

printed

circuit

board,

HRZ-MB

transistor,

2N3904

16-pin

DIP

headers

North

Star

HORIZON

Computer

14-pin

DIP

headers

heat

sink,

Thermalloy

60308

2S-pin

connector

100-pin

edge

connectors

1/4"

auick-connect

lugs

3/16"

auick-connect

lugs

6-32x3/8"

machine

screws

lock

washers

6-32

nut

4-40x3/8"

machine

screws

lock

washers

4-40

nuts

WOOD

COVER

PARTS

LIST

Vvood

cover

6-32xl"

brass

machine

screws

brass

flat

washers

METAL

COVER

PARTS

LIST

metal

cover

6-32x3/8"

machine

screws

North

Star

HORIZON

Computer

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