Epson HX-20 User manual

EPSON

HX-20 OPERATIONS MANUAL

Kenneth Skier

President

SkiSoft, Inc.

Cambridge, Massachusetts

part

this

publication

may

reproduced,

stored

retrieval

system,

transmitted,

in any

form

by any means,

electronic,

mechan-

ical,

photocopying,

recording

otherwise, without the

prior

written

permission

Epson

America,

Inc.

patent

liability

assumed with respect

the

use

the

information

contained

herein. While every

precaution

has been

taken

in the

preparation

this

book,

the

publisher

and

author

assume

responsibility

for

errors

omissions. Neither

any

liability

assumed

for

damages

resulting

from

the

use

the

information

contained

herein.

The

Source”’

service

mark

Source

Telecomputing

Corporation.

subsidiary

the

Readers

Digest

Association.

Inc.

CompuServe®

registered

trademark

CompuServe.

Inc.

Torrance, California 90505

Federal

Communications

Commission

Radio

Frequency

Interference

Statement

“This equipment generates and uses radio frequency energy and if

not installed and used properly, that is, in strict accordance with the

manufacturer’s instructions, may cause interference to radio and

television reception. It has been type tested and found to comply

with the limits for a Class B computing device in accordance with

the specifications in Subpart J of Part 15 of FCC Rules, which are

designed to provide reasonable protection against such interference

in a residential installation. However, there is no guarantee that

interference will not occur in a particular installation. If this equip-

ment does cause interference to radio or television reception, which

can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the

following measures:

l Reorient the receiving antenna

l Relocate the computer with respect to the receiver

l Move the computer away from the receiver

l Plug the computer into a different outlet so that com-

puter and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced

radio/ television technician for additional suggestions. The user

may find the following booklet prepared by the Federal Communica-

tions Commission helpful:

“How to identify and Resolve Radio-TV Interference Problems.”

This booklet is available from the US Government Printing Office,

Washington, D.C., 20402, Stock No. 004-000-00345-4.

CONTENTS

1 Congratulations! ...................................

2 Cautions .........................................

Case ..............................................

Dummy cartridge ..................................

System bus cover ...................................

Circuitry cover .....................................

Battery charger ....................................

Batteries ..........................................

Printer ............................................

Peripherals ........................................

Physicalshock .....................................

Humidity .........................................

Extreme temperatures ...............................

3 Preparing

your

HX-20

for

use

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

Unpackingthe HX-20 ..............................

Charging the batteries ..............................

Preparing the printer for use .........................

Removing the printer cover. .....................

Inserting the paper roll. .........................

Inserting the ribbon cartridge ....................

Replacing the printer cover. .....................

Adjusting the viewing angle ......................

initializing memory and the calendar clock ............

Selecting a different character set. ....................

4 Using the HX-20 ...................................

Turning it on ......................................

Viewing the menu.. ................................

Choosing an item from the menu .....................

The

screen

editor. ..................................

The virtual screen ..................................

Thecursor ........................................

Scrolling ..........................................

Homing the cursor .................................

Clearing the screen .................................

Typing on the virtual screen .........................

Automatic scrolling. ................................

Virtual screen width ................................

Logical lines vs. physical lines. .......................

Retyping ..........................................

Deleting text ......................................

Insert mode .......................................

Upper and lower case. ..............................

Numeric mode .....................................

Graphic characters .................................

Printing the screen .................................

Using the special function keys .......................

6 Connecting

your

HX-20 to

other

devices

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

-to a cassette recorder .............................

-to an RS-232 device ..............................

-to a bar code reader ..............................

What

you

have

problems?

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

If you can’t turn off your HX-20 .....................

If the menu displays garbage .........................

If you encounter other problems .....................

8 Storing

your

HX-20 ................................

-for a few minutes to a few hours ..................

- for a few hours to a few weeks ....................

-for a few weeks to a few months ...................

Specifications.

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

Architecture.. .....................................

Expansion .........................................

Help!

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

Chapter 1

Congratulations!

Congratulations! You have just

purchased the first of a new gen-

eration of personal computers.

The Epson HX-20 is unlike any

product ever built, combining

the power and usefulness of a

desktop computer with the port-

ability of a pocket calculator.

It’s a go-anywhere, do-

anything system designed from

the start to be user-friendly-

which means you don’t have to

know anything about comput-

ers to use it. Powered by its own

internal batteries, with no dan-

gling cords or external parapher-

nalia, the HX-20 is a compact

and uncluttered system, at home

in the classroom or the confer-

ence room, on your desk or in

your lap.

Unlike most other personal

computers, the HX-20 can store

up to seventeen programs in its

memory. (Five of these may be

BASIC programs.) When you

turn on the HX-20, a menu ap-

pears on the screen, listing the

names of these programs. You

can make the HX-20 run any

program on the menu simply by

pressing a single key.

Furthermore, the HX-20 has

a memory like an elephant. Un-

like most personal computers,

which forget any program in

memory as soon as they are

“powered down,” the HX-20

remembers all programs in its

memory even when you turn it

off

Contained within the HX-20

is an extended version of Micro-

soft BASIC, a powerful pro-

gramming language that is easy

to learn and which takes full

advantage of the many special

features of the HX-20. If you

have no interest in program-

ming, you can purchase

programs and run them on your

HX-20. But if you do wish to

learn about programming, the

accompanying Epson HX-20

BASIC Tutorial and Reference

Manual will teach you every-

thing you need to know. It will

take you from a computer

novice to an accomplished com-

puter programmer, in only a few

evenings.

When you use the HX-20,

you’ll notice that its full-size,

full-stroke keyboard has the feel

of a fine piece of office equip-

ment, and that its program-

mable special function keys

make it a snap to develop pro-

grams that are extremely easy to

use. You'll also appreciate its

built-in screen and printer. They

display graphics as well as num-

bers, punctuation marks, and

upper and lower case letters.

You may tailor the HX-20 to

certain applications, such as

word processing or telecom-

munications, by purchasing a

tiny circuit called an option

ROM An option ROM will fit

inside the HX-20, enhancing it

permanently with the desired

capabilities. Only one option

ROM can fit inside the HX-20 at

a time, but it’s a powerful means

of customizing the HX-20 for a

desired application-without

diminishing in any way its abil-

ity to run BASIC programs or to

accept option cartridges.

Option cartridges also tailor

the HX-20 for specific applica-

tions. You can install a cartridge

in moments, simply by sliding it

into a recessed compartment in

the case of the HX-20. Insert a

program cartridge for one or

more ready-to-run applications

programs; or slide in the micro-

cassette cartridge, which con-

tains a complete microcassette

recorder suitable for storing

programs and data files.

If your applications require

more memory than the HX-20

features, just attach an expan-

sion unit, which virtually dou-

bles the read-write memory

and permanent memory of the

system.

Should you decide to expand

the capabilities of your HX-20

even further, you may connect it

to such external devices as:

-an ordinary cassette recorder,

for permanent storage of pro-

grams and data;

-a display controller, which

enables the HX-20 to display

text and graphics on your

television set or on a video

monitor;

-a printer, for full-page print-

outs of text and graphics;

-a modem or acoustic coupler,

to enable your HX-20 to com-

municate over telephone lines

to other computers and net-

works such as CompuServe@

and The Source”;

-one or more floppy-disk

units, which may store dozens

or hundreds of programs and

data files on-line, for virtually

instant access;

As you can see, the HX-20 is

powerful, portable, easy to use

and expandable. Whether you

wish to use it for school, for busi-

ness, or just for fun, you could

hardly choose a more personal

personal computer.

So, once again, Congratulations!

-a bar code reader, to scan bar-

coded programs, songs, and

data sheets.

Chapter 2

Cautions

The HX-20 is not a toy. Although it is solid and well-built, it is not

invulnerable. Treat it with the care it deserves, and it should pro-

vide you with years of reliable service.

The warnings on these pages concern only the HX-20. If you con-

nect your HX-20 to any peripherals, be sure to heed any warnings

contained within the documentation for those peripherals.

(Note: failure to observe the following cautions may void the

warranty on your HX-20.)

Never

disassemble the

case

There are no parts inside your HX-20 that you can service or replace

by yourself. If you remove the screws that hold the case together,

you will risk damaging the static-sensitive circuitry and/or the

batteries.

INever

disassemble

the case

Leave

the dummy

cartridge

place

In the upper right corner of your HX-20, you will notice a dummy

cartridge.

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