Radio Shack 26-1190A Hardware Manual

PLOTTER

PRINTER

Catalog

Number

26-1

190

A

COSTOM

MANUFACTURED

IN

THE USA

FOR

RADIO SHACK

K A

DIVISION OF

TANDY CORPORATION

Congratulations

for

selecting

this

Radio Shack Computer

product!

The TRS-80

Plotter Printer can be programmed with

simple BASIC LPRINT

statements

to

draw

an

infinite

variety of

points, lines

and

curves

-

as well

as the standard ASCII

text

characters

(excluding

lowercase

letters).

The drawing mechanism

is

very simple,

easy to maintain, and reliable.

An easily

replaceable

ball-

point pen

is the writing device

-

no hammer, armature, or wire to wear out

Other exceptional features include:

•

Fast-response

solenoid control

of

the pen point assures

precision drawings.

•

Ballpoint

pen

produces clean,

clear,

reproduceable

copies.

•

Compact, lightweight

design.

•

Character size can

be

controlled by software (twice,

four times,

or eight times normal size).

•

Alphanumeric characters can be rotated

90, 180,

or

270

degrees

(software controllable).

•

Two modes of operation

-

plotter and character

-

software

selectable.

•

Built-in programming simplifies the

drawing of many geometric

shapes.

•

Ultra-simple control mechanism (two

motors and one magnet) means fewer moving

parts

-

resulting

in

superior

reliability and

low-noise operation.

•

Modular design

and construction combined with

a

mechanism which

requires

no lubrication

keeps

service and maintenance to a minimum.

1

-

CONTROLS

AND

FUNCTIONS

Front cover

Roll paper holder

Tension

lever

Platen

Pen

clamp screw

OPERATION

STOP

switch

POWER

switch

FEED

switch

POSITION

switch

Pen

head

Power

cord

Ribbon

connector (36P)

-2-

SETTING

UP

Loading

the

Paper

1

.

Open the plastic

cover.

2.

Place a roll of paper in the compartment behind the platen with the

paper

coming

off

the

bottom of

the

roll.

3.

Pull the tension lever forward

and

thread the

paper

under the

platen

and

behind

the paper

guide.

4. Align the paper holes over

the

sprockets

on

the platen and

return the

tension lever

to its original

position.

Setting

the Ballpoint

Pen

1

.

Loosen

the

pen clamp screw.

2. Insert the pen into the pen holder

and tighten

the

pen clamp screw.

Note: Be sure to

test the

pen

first before

inserting it, as the pen tip

may be dry.

Also, any time that

you

use the Plotter Printer after

it hasn't been used recently,

slip a piece of scrap

paper between

the

pen and the platen and smear it

against

the

pen tip to get

the

ink flowing.

Thread the

paper up through the slot in the plastic

cover and close the cover.

Firmly attach the

connector provided to the

back

of the Plotter

Printer.

Plug the

power cord into a source of

120

volts,

60

Hz

AC

power

(220/240

VAC for European

and

Australian models).

Your Plotter Printer is ready for use.

OPERATION

POSITION Switch: Press the

appropriate arrow

to

move

printing position. For

continuous

movement,

hold

down for

1/2

second.

Notes:

1.

Don't

push the switch while

the

Printer is

operating.

2.

When

changing the direction

of

movement, release the

switch for a

moment to allow

the pen

head to stop,

and

then press

the desired

direction

arrow.

3. While

this switch is

down, a

busy signal is sent

to the

Computer.

4.

This switch only functions

to

move

the pen (it

does not

engage the

pen against the paper).

If the switch

is

operated while

the

pen

is "on",

the

pen

will

be set to

"off before

it is

moved.

5.

The coordinates

of

the

pen

position will

be the

same.

The

coordinate system is shifted

along

with

the

pen.

3-

FEED

Switch:

Press

to

advance

paper.

Notes:

1.

Don't

push

the

switch

while

the

Printer

is

operating.

2.

While

this

switch

is

down,

a

busy

signal

is

sent

to

the

Computer.

3.

This

switch

only

functions

to

move

the

paper.

If

the

switch

is

operated

while

the

pen

the

pen

will

be

set to

"off

before

the

paper

is

advanced.

Range

of

Movement

by

POSITION

Switch

The

illustration

below

shows

the

limits

of

pen

movement

using

the

POSITION

Switch.

X-axis:

-32767

to +32767

Y-axis:

no limit

-32767

+32767

Movement

speed:

to

+

32767

Plotter mode

=

approx

33 sec

Character

mode

=

approx

50 sec

to -32767

Plotter

mode

=

approx

28

sec

Character

mode

=

approx

45 sec

Note:

The

pen will

physically move

only

over

an

X axis length

of 1964

steps,

which

is

the

width

of the

paper. If

you

continue

to press the

POSITION

switch the

pen will

stop

at the

edge

of the

paper,

but

the Plotter

Printer

will

internally

keep the

pen's "imaginary

position"

as

if it is still

moving.

The

imaginary

position can be

anywhere

between -32767

and

+ 32767.

Interlock

Switch

(inside

the

unit,

next

to

the

cover)

When

the

cover

is opened,

the following

occurs:

1.

The

operation

stops.

2.

A

Busy

status exists

and no

data

can

be received.

3. The

POSITION

and

FEED switches

become

inoperative.

When

the cover

is

closed

operation

continues

from

its previous

status.

-4-

PROGRAMMING

Note:

All of the

sample

programs are

written in

BASIC.

The apostrophe signifies

a remark, material that

you don't

need to type

in.

Incremental Stepped Pen Motion

The pen does not

move in one

continuous line;

it is digitally

controlled in increments

of

0.09525

mm

(approximately

.004 inch).

Effective paper width is 1964

steps, or 187 mm

(7-3/8").

Note: Each

movement

of the POSITION

switch moves printing position by 10 steps (increments)

in the

direction

of the

arrow pressed.

Mode

Change

The

Printer has two

modes of operation:

Character Mode

and Plotter Mode. Control Code

1 sets

to

C

mode

(Character); Control

Code

2

sets to P mode

(Plotter).

Note: On

power-up, the

Printer is

automatically

set

to

C

mode.

10

LPRINT CHRS

(2)

: 'SETS

TO

P MODE

20

LPRINT

"G50

X750

Y190" :

'MOVE

PEN

TO

POINT

750,

190

30

LPRINT

CHRS

(

1

) :

'SETS TO C

MODE

40

LPRINT "PLOTTER

PRINTER"

: 'PRINTS MESSAGE

The above sample

program will print

PLOTTER

PRINTER from the

X,

Y position

defined

as 750,190.

We'll explain line 20

later.

Character

Mode (C Mode)

In the C

mode the

Printer prints

the standard

ASCII alphanumerics and symbols.

The

internal

buffer

stores up to

14 characters.

CAUTION:

Printing

is

made in

capital letters

even

when small letters

(26

letters a through

z) specifying

codes

are input.

The printer passes other codes when they are input. (They

are neglected and

it

does not

function.)

Character Size

The

base

scale

provides the

following

sizes:

Character

spacing 24

steps

(approx

1 1 characters/inch)

Line

feed

spacing

44

steps

Character

width

1

6

steps

(varies depending

on

character)

Character

height

30 steps (varies depending

on

character)

24

16

Note

for Model II users: During printing operations

the

Plotter

Printer

will

be busy; this

may

result

in

"Printer Not Ready" errors.

To

prevent this,

you may need

to insert pauses

in your

program after long-

printing instructions. See line

55

in the next program.

Changing

the

Character

Size

The size of

the characters can be changed via control codes

as follows:

Code (decimal)

3

4

5

6

Size

All

following

characters will be

twice base size.

All following characters will

be four

times base

size.

All following

characters will be eight

times

base size.

All following characters

will

be base size

(this is the initial

size, auto-

matically

set on power-up).

-6-

Example:

10LPRINTCHR$(1);

'SETS

TO

C

MODE

20

LPRINT

CHR$

(3)

"TWICE

BASE

SIZE"

30

LPRINT

CHR$

(2)

'SETS

TOP

MODE

40

LPRINT

"G50

UO

V-200"

'MOVE

DOWN 200

STEPS

50

LPRINT

CHR$

(1)

CHRS

(4)

"FOUR

TIMES

BASE"

55

INPUT

"PRESS

<ENTER>

AFTER

PRINTING

IS

FINISHED";

X

60

LPRINT

CHRS

(2)

'SETS

TO

P

MODE

70

LPRINT

"G50

UO

V-400"

'MOVE

DOWN 400

STEPS

80

LPRINT

CHRS

(1

)

CHRS

(5)

"8

TIMES"

90

LPRINT

CHRS

(6)

"BACK

TO

NORMAL

AGAIN"

Model I

and HI

users

may

delete

line

55.

Model

II

users

see

previous

Note.

Rotating

Characters

The

orientation

of

the

writing

can

be

set

for

0°

,

90°

,

1

80°

,

or

270°

via

control

codes

as

follows:

(decimal)

Rotation

(degrees)

17

(normal

upright

position)

This

is

the

initial

state.

18

90

(reading

from

the

left

side)

19

1 80

(upside

down)

20

270

(reading

from

the

right

side)

-7-

ENLARGED LETTERS AND

TURNED

LETTERS

H

H

(Onefold) (Twofold)

(Fourfold)

(Eight fold)

ABC

270°

\_,

o

^

m

->

~n

s

90°

IH3

180"

-8-

Example:

10LPRINTCHR$(2)

20

LPRINT

"G50 XI

500

Y190"

'MOVING

PRINT

POSITION

30

LPRINT

CHR$

(1)

CHR$

(18)

"90

DEGREE

PRINTING";

40

LPRINT

CHRS

(2)

50

LPRINT

"G50 U-300 V-300"

'MOVING

PRINT

POSITION

60

LPRINT

CHRS

(1)

CHRS

(19)

"180

DEGREE

PRINTING";

70

LPRINT

CHRS

(2)

80

LPRINT

"G50 U-300

V300"

'MOVING

PRINT

POSITION

90

LPRINT

CHRS

(1)

CHRS

(20)

"270

DEGREE

PRINTING";

100

LPRINT

CHRS

(2)

110

LPRINT

"G50U400V300"

'MOVING

PRINT

POSITION

120

LPRINT

CHRS

(1)

CHRS

(17) "BACK

TO

NORMAL"

Note:

When

changing

from

P-mode

to

C-mode,

the

Rotation

and

Character-size

states

are

automatically

reset to

degrees

and

base

size,

respectively.

Other

Control

Codes

The

Printer

accepts

the following

additional

codes

and

ignores

all

others:

8

Backspace

by

one character

(BS)

10

Linefeed (LF)

13

Carriage

return

with linefeed

(CR)

"Note:

Input

character

automatic

return

function

is

equipped

on

the

Plotter

Printer.

81st

character

and

subsequent are

printed

in the

next

line.

9-

Pen

Positioning

(Alphanumeric

mode)

1

.

At rest the

pen is positioned

in

the center of

a character.

Example: After

A is printed,

the

pen moves

to

the

position

(J)

(24

steps from

the

center

of

"A".

If the

Printer

receives

a

full

line of

printable

char-

acters

without

a carriage return,

it will

perform

an automatic

line advance

upon receipt

of

the

next

printable

character.

This is

called

wraparound,

since the text

automat-

ically

wraps to the

next line

without

loss of

char-

acters.

At 81st

position of

one-fold

character

wraparound

takes place.

DEF

ABC

80th

character

3.

When

a BS (Back Space,

CHR$

(8) )

is input for

more than the

number

of spaces

to the left margin,

the

pen

will move

to the left margin,

then the imaginary

pen

point will

be internally

set as though

it

were at an imaginary

position represented

by the

BS spacing.

Example: When

BS is input three

times after

A

is printed,

the pen will

be internally

set to the equivalent of

"imaginary"

position

(3)

.

A

Pen Position

on

Power-up or

with CR

Code

Input

The pen moves

to

the right

by

a

half-character

^pace and then will write

the first character

transmitted.

8

[STEPS] (Base

size mode)

-10-

Function of CR

Code

When

a

CR Code is

input, the

pen moves to the left

margin and will

begin

printing

in that position.

Effective

paper width

®

©

©

©

1964

Whenever

a

CR Code

is

input,

regardless

of

pen

position

-

at

(?)

or

"imaginary

positions"

(6)

or

(7) ,

the

pen will return

to

position

(4)

Example:

When

in the P

Mode the

pen is

set

to

(3500,

-1000)

and then

C Mode

and CR are input,

the

pen will move

as illustrated.

—

B

•—

C.

1964

"

B

Imaginary

position of

pen

CR Timing

Considerations

When

the pen

is positioned

at the imaginary

points

D or

E

and

a

CR code is input,

it will take

approxi-

mately

three seconds

before the

peri moves

to

the

left

margin. (The

process

"thinks" the

pen

is

at

that

position and

will calculate motions

accordingly.)

It

will take

approximately

400

mS

for

the

pen

to return

to the left

margin

when

automatic

return

is made

at the

80th character.

Effective

paper width

E"

-32767

1964

»D

+32767

Note: In the

rotated character mode,

CR functions

just as

normal, but

LF does not.

That is,

CR causes

the

pen to

move

to

the left margin.

LF,

if

in the

90 and 270 modes, will

be ignored.

In the

180

mode,

LF

feeds

paper in

reverse.

-11-

Plotter

Mode

(P Mode)

In

the Plotter

mode, the

printing position is

determined by

a system of coordinate values. If a

command

tells

the pen to

move to a point off

the paper,

the pen

will remain stationary

at

the paper's edge,

but

the

pen's

imaginary position off

the

paper

will be

kept internally

and the

next move or print will start

at

that

imaginary

position.

Absolute

Coordinate

System

The

coordinate

axes

are defined

with

respect to the paper as

follows:

Paper

feeding

direction

O
O

O

O

O

O

O

O

+Y

i

•+X

When the mode is set to

P Mode

the reference point

for the

absolute coordinate system is as

follows if the

POSITION

switch is not

used.

Current

position

of

pen>

Approx. 21

mm

+Y

O

<0,0)

-+X

Effective

paper width

O
O

o
o

The

zero-point of the

X axis

(X=0)

is defined

as the left

margin.

The zero-point of

the

Y

axis (Y=0) is

defined as the current

pen position.

-12-

Relative

Coordinate

System

The relative

coordinate values, compared

with

the current position of the

pen, are determined

as follows:

O

o

o

o

o
o

o

o

o

o

o
o
o

+v

Current

point

+U

(X,

Y)

value and (U, V) value agree

only when

the pen

is in the original

position

(0,

0).

You

can

change the

location of

the

origin position

by

using

the POSITION and/or the FEED

switch.

Moved

by POSITION

switch

(X

direction)

o

o

o
o

o
o

+Y

(0,0)

-+X

o

o

o
o

o

o

Remember that the

X

and Y coordinates move with the pen when the

POSITION or FEED switch

is

used.

Thus,

when

these switches are pressed the absolute origin

and

the absolute

coordinate system

also

shift

with the pen.

Example:

A

(100,200)

B

(100,

200)

When

the pen is

moved from

A

to

B

with

the POSITION

switch, the

new coordinate

value

of

B becomes the

original

coordinate

value that

A had

(100,

200).

The origin can

also be

moved by

use of the

G02 and

G03

commands (See page

1

7).

-13-

G

Functions

G Functions control

the

action of

the pen and the paper. These

control

statements

consist of the

ASCII

character

"G"

plus

a series of

ASCII numbers and letters defining the line

and/or

figure segments desired.

There are seven

G functions

as

noted

below:

G Function

Table

^Code

Function

Remarks

G00

Straight line segment

Dotted

Line

G01

Straight line segment

Solid Line

G02

Arc

segment

(drawn

clockwise)

Solid Line

G03 Arc segment

(drawn

counter-clockwise)

Solid

Line

G50

Pen

up movement

G90

Rectangular figure

Solid Line

G91 Triangular figure

Solid Line

G00

Function:

Draws a dotted

line between the

current point and the

point

specified

by

the

X

and

Y coordinates.

Format:

G00XnnYnnCR

Example:

LPRINT

"G00 X800

Y500"

>•

(800,

500)

Current

point

G01

Function: Draws a

solid line

between

the current

point

and the point

specified by

the

X

and Y

coordinates.

Format: G01XnnYnnCR

-14

Example:

LPRINT

"G01

XI

000

Yl

200"

(1000,

1200)

Current

point

G02

Function:

Draws an arc in a

clockwise direction between

the current

point

and the

point specified

by

the

X

and

Y axes.

The center of the arc

is specified

by

I

and

J,

which show

the

coordinate

distance

of the current point on

the X axis and

Y axis

to the

center

point.

Format:

G02

Xnn Ynn Imm

Jmm

Example

:

LPRINT

"G02

X600 Y200

1200

J346"

(400,

546)

Current

point

Center

(200,

200)

1=300

(600,

200)

The value

of

I

is the

distance on the

X

axis from

the current

point to the center

point. The value

of J is

the distance

on the Y axis from the

current point

to the center point. One

complete

circle is drawn

by

specifying only

I and/or J.

Example:

LPRINT

"G02

1200

J200"

LPRINT

"G02

1200"

200

LPRINT

"G02J200"

Current

point

Current

point

-15-

Even when

the X and/or

Y

coordinate of the

point specified

is not present on a

circumference (determined

by

the

current

point and

the center

point (I, J)

)

the

pen moves to

the

point specified.

However, when

both

coordinates

of the

point specified

are outside

the

radius

of

the circle,

the pen

will

move along a

maximum

of

1-1/2 times the

circumference and

then stop.

Under this condition,

the

relative

relationship

between

the Absolute

coordinate

value and

the pen position

will be lost.

Example for

when the point

specified

by X,

Y (U,

V) is

not present

on the circumference

(but is

inside

the

radius of

the specified circle):

LPRINT

"G02 U-300

V-300

1400"

fBegining

(Current) point

8

Example for when

both

coordinates of

the point

specified are

outside the radius of the

circle (shaded

areas):

LPRINT "G02

U1.00

V500

1400"

s

Point

specified

400

—

/-/Beginning

point

One

special application of G02

(or G03)

is to

move

the coordinate origin.

When

"G02

X0

Y0" (or "G03

X0

Y0'')

is

executed, the

current

pen

position

becomes the new origin.

-16-

Example:

10

LPRINT

"G01

X2000Y1000"

20LPRINT"G02X0Y0":

'POINT

(2000,

1000) BECOMES

NEW

ORIGIN

30

LPRINT

"G0

1

X

1

000

Y-

1

000"

:

'POINT

DESIGNATION

FROM

NEW

COORDINATE

1000

G03 Function:

Functions

the

same as

G02,

but

draws in

a

counter-clockwise

direction.

Example:

LPRINT

"G03 X200

Y600

1300

J265"

(200, 600)

in

to

CM

Center

(200,200)

1=300

Current point

(500,

465)

G50

Function:

Lifts

the

pen and

moves it

from the

current

point

to the

coordinate

point specified.

Example:

LPRINT

"G50

X600 Y700"

(600,

700)

S* With pen off from paper

Current

point

-17-

G90

Function:

Moves and

draws

a

line

first

to

the

specified

Y

coordinate,

then

to

the

X

coordinate,

then

to

the

original

Y

coordinate,

and

then back

to

the

start

point.

Thus

a

rectangle

can be

defined by

the

positions

of

two

of its

diagonal

corners.

(One

of

them being

the

current

pen

position.)

Example:

LPRINT

"G90

X300

Y900"

(a,

Y)

(a,b)

Current

point

(X,Y)

(300,

800)

I

(X,b)

The

pen

moves

and

draws a

line

from

the

current

pen

position (a,

b)

to (a,

Y)

to (X,

Y) to

(X, b)

and

then back

to (a, b).

G91

Function:

Moves and

draws a

line to

(a,

Y), then

to (X,

b),

and

then

to

the

starting

point

(a, b),

creating a

triangular

shape.

Example:

LPRINT

"G91

XI

000

Y1300"

(a,

Y)

t

(a,b)

Current

point

*—

(X,Y)

1000,

1300)

(X,b)

Note

on

G

Functions

When

a

G

function

code is

not

specified,

any

previously

specified

G

function

will

continue.

Example:

LPRINT "G00

X800

Y400" :

LPRINT

"XI

000

Y200"

(800,

400)

/

\

/

\

/

/

s

Starting

point

/

(1000,200)

-18-

M

Function:

When

M00 CR

is

input, the pen

moves from the

current

point

to the

origin

of the

absolute

coordinate system.

Example:

LPRINT "M00"

(0,

0)

Origin

X

(300,

-200)

Current point

Combining P

Mode

and C

Mode

When

changing

to the P

mode, the

current

position of the

pen

becomes the

origin

of the

Y-axis

(Y=0).

(In the

C

mode,

the

absolute coordinate

value in

the

Y

direction

is not stored.)

Example:

10

LPRINT

CHR$

(2)

20

LPRINT "G01

X500 Y-500"

30

LPRINT

CHR$

(1

)

CHR$

(32)

"A" CHR$

(8)

CHR$

(8).

40

LPRINT

CHR$

(2)

50

LPRINT

"G01

X1000 Y-500":

Note

regarding

line

30:

CHR$

(32)

is a space

code;

without

it, letter

"A"

would

be printed right

on the

point.

CHRS

(8)

is a back-space

code to

compensate for the

normal

movement

to the

right caused

by

the

space code

and

"A". The pen moves

twice (four

or eight times)

in an

enlarged mode,

therefore

use

the

appropriate

number

of back-space

codes to

compensate.

500

500

o

o

A

8

in

Note

that X

axis

is

not changed

during

mode

change-over.

-19-

Input

Format

After

a G

function

code

is

input, X,

Y,

U,

V, I,

and

J

can be

used

in

any

order.

Examples:

LPRINT

"G01

Y100 XI

00"

is

the same as

LPRINT"G01

X100Y100"

LPRINT "G02

V200

U200

J-

100

1-100" equals

LPRINT "G02

1-100

U200

J-

100

V200"

The

absolute

coordinate

value

and

relative

value may be

used

simultaneously.

However,

when X

and U,

and

Y and

V are

used

simultaneously,

only

the

earlier input is

valid.

Examples:

LPRINT "G00

XI

00

V-500"

LPRINT

"G00U1

00

Y-500"

LPRINT "G00

XI

00

U500

Y200"

U500

will be

invalidated

LPRINT "G00

U200

V500

Y300"

Y300

will be

invalidated

Handling

of

Invalid

Codes

When using G00,

G01 ,

G50,

G90,

or G91

:

Gmm

. . . X(or U)

. . .

(12345)

. .

Y(or V)

.

.

. (12345)

.

.

.

CR

(1)

(2)

(3)

(4)

(5)

The

following

codes

are

ignored

when

input

in positions

1

through

5 :

1

- -

-

Codes

other than G, X,

Y, U,

V, and CR

2

& 4

Codes

other than

+

,

-

digits,

and CR

3

- -

-

Codes

other than X (U),

Y, V,

digits,

and CR

5

-

- -

Codes

other

than Y (V),

digits,

and CR

Example:

LPRINT

"G01

AAXAA

2000

AA Y AA

1

500

AA"

is

the same as

LPRINT

"G01X2000Y

1500"

-20

When

using G02 or

G03:

Gnn . .

.

X(or

U) .

.

. (12345) .

.

.

Y(or V) .

.

.

(12345)

.

.

. I

.

.

. (12345)

. .

.

J

. . .

(12345)

. . .

CR

(6) (7)

(8) (9)

(10)

(11) (12)

(13)

(14)

The following codes are ignored when input in positions 6

through

14

:

6

---

Codes

other than

G, X, Y,

U,

V,

I,

J,

and

CR

7,9,11,13

—

Codes

other

than

+

,

-,

digits, and

CR

8

-

- -

Codes other than X (U),

Y,

V,

I,

J, digits,

and CR

10

---

Codes other than Y (V), I,

J,

digits, and

CR

12

—

Codes other than

I,

J,

digits, and

CR

14

—

Codes other than J, digits, and

CR

Example:

LPRINT

"G02 BB X BB

500

BBYBB

500

BB I BB

500

BB J BB

500

BB"

is the same

as

LPRINT "G02

X500 Y500

1500

J500"

Range of

Values:

Values

of U and V are

valid

within the range of

—32767

to + 32767.

Values

of X,

Y,

I,

and J are valid within the range of

—16383

to + 16383.

(0

value

must not have

a minus

sign.)

CAUTION:

If

a

value outside

the

range

of

-32767

to +32767 is

input,

the value

is

assumed

to be 0.

Example: LPRINT

"G01 X40000"

at point

A

causes the pen to move

to point

B.

+Y

B

,

«=

.

a

(300, 300)

(o.ol

+x

-21-

Input

Correction

G Functions

When Gmm is to be

corrected

to

Gnn, input Gnn

immediately after inputting

Gmm.

Example:

Changing

G01 to G50, "G01G50 X100"

will function just like

"G50 X100"

Other values (X, Y, U, V, I, and J)

When Xmm is to be corrected to Xnn, input Xnn

immediately after Xmm (the second value

will be

used).

Example: Changing

X1000 to X2000,

"G01 X1000

X2000"

will

function just like "G01 X200.0".

Y,

U, V,

I,

and

J

can

be corrected in the same way.

Relative Coordinate System

Effective paper

face

-32767

+V

+u

+1964

+32767

-22-

When

plotting

characters

or

illustrations, the

pen

position

(whether

actual

of imaginary)

must

stay within

the

limits

represented

by shading

in the above

figure.

This

refers

to

the

cumulative

pen

motion,

not

only

the

motion

for

one

command.

For

the

X-direction,

stay

within the range

of -32767

to +

32767.

For

the

Y-direction,

the

pen motion

is limited

only

by the

length

of

your

paper roll.

If

an

attempt

is

made

to

draw

a figure

or character

outside

the

shaded

area,

the

relationship

with the

relative

coordinate

system

will

be lost.

(The

mathematical

location

of

the

origin

will

be

deleted,

leaving

no

reference

point for

the

coordinate

system.)

Example:

When

G01 U400 V200"

is

input

at point

A,

to

move

the

pen to

point

B,

the

relationship

with

the

relative

coordinate

system

will

be lost.

+32767

-23-

Absolute

Coordinate

System

When

the

origin in the X-axis

is on the left

margin

:

-32767

Y

II

+32767

Effective

paper

width

When

drawing

characters or illustrations,

use

only

the area represented

by

shading

in

the

above figure.

If an

attempt

is made

to

draw

a character

or

illustration outside

the

shaded area, the

relationship

with

the

absolute

coordinate system will

be lost.

-24

Example:

When

"G01

U-20000 Y1000"

is

input to

move the

pen

from

the origin

to point

D,

the

relationship

with the absolute

coordinate

system

will

be lost.

(-16383,

0)

When

the

origin

in

the

X-direction

is

not

on the

left

margin

part

of the

absolute

coordinate

system

may

be

shifted

off

the

useable

X-value

range.

+32767

-+X

(+16383,

0)

Effective

paper

width

-25-

When

drawing

characters

or

illustrations,

use

only the

area

represented

by shading

in

the above

figure.

If

an attempt

is

made

to draw

a character

or illustration

outside

the

shaded

area,

the relationship

with

the

absolute

coordinate

system will

be lost.

Example:

When

"G01 X12000 Y12000"

is

input

to

move the

pen from

point

E to point

F, the

relationship

with

the

absolute

coordinate

system

will be lost.

+Y

(0,

+16383)

(-16383,

0)

(0,0)

(0,-16383)

-Y

—

»-+X

(+16383,0)

+32767

Some

Functional

Examples

Since

the

incremental

steps are

extremely

small

(0.09525

mm), you

can

draw

"curves"

with

the

Plotter

Printer.

(Actually

these

"curves" are

made up

of a series

of very

short

straight

lines.)

This sample

program

will draw

a Sine

Curve.

First

we draw

the

coordinate

axes.

Then

the sine

value

is

multiplied

by

300

in the

Y-axis

direction

to

establish

the

amplitude

of

the

sine wave

and this

figure

is

printed

on the

previously

drawn

axes.

10

LPRINT

CHR$(2):

20

UPRINT

"G50

X900 Y-730":

30

LPRINT

"G03

X0 Y0":

40

LPRINT

"G50

X-700":

50

LPRINT

"G01

X700":

60

LPRINT

"G50 X0 Y-700":

70

LPRINT

"G01

Y700":

80

LPRINT

"G50

X-700

Y0":

90

FDR X=-700

TO

700

STEP

20

100Y=SIN(X/111.4)*300:

1

10

LPRINT

"G01

X"; INT(X);

"Y";

INT(Y):

120

NEXT:

'TO

BE SURE WE'RE

IN

P MODE

'MOVE

PEN

TO ABOUT

CENTER

OF

PRINTING

AREA

'SET

THIS POINT

TO

NEW

ORIGIN

'MOVE

PEN

TO

START

OF X

AXIS

'DRAWING

X

AXIS

'MOVE

PEN

TO START

OF Y

AXIS

'DRAWING Y

AXIS

'MOVE

PEN

TO START

OF

SINE

CURVE

'CALCULATE

SIN X

AND

MULTIPLY

BY

300

'DRAWS

ONE

STEP OF

SINE

CURVE

'NEXT X VALUE

-26

PLOT

OF

SINE

CURVE

-27

The following

is a listing of

a

much more

complex program.

It

will

demonstrate

most

of the

capabilities

of the Plotter Printer. We suggest

you take

a

little time

to study the

program

along

with

the

resulting

output. It should

help

you

understand some

of the

features

and

the required

programming

techniques.

10

REM SAMPLE

P

ROGRAM

[

20

DEFINTA-Z:LPRINTCFIR$(1)C1

30

LPRING

CHR$(2)

40 LPRINT"G50 U300

V50

50 LPRINT"G02

X0 Y0

60

REM

70 LPRINT'GOl XO

Y180

80

LPRINT"G01

X90

Y180

90 LPRINT"G02

XI

05

Y85

100

LPRINT"G01 X140

YO

110

LPRINT"G01

X80 YO

120 LPRINT'GOl

X60

Y35

130 LPRINT"G03

X50

Y35

140 LPRINT"G01

X50 YO

150 LPRINT'GOl

XO

YO

160 LPRINT"G50

X39

Y85

170 LPRINT"G02

1-22

JO

180

LPRINT"G50

X150

Y95

190

LPRINT'GOl X150

Y140

200 LPRINT'GOl

X230

Y140

210 LPRINT"G02

X265

Y105

220 LPRINT'GOl

X265

YO

230 LPRINT'GOl X175 YO
240 LPRINT"G02

X180

Y85

250

LPRINT'GOl

X195

Y85

260 LPRINT"G03

X195

Y95

270

LPRINT'GOl XI

50

Y95

280

LPRINT"G50

X172

Y50

290 LPRINT"G02

1-22

JO

300

LPRINT'GSO X340 YO

310

LPRINT"G02 X340

Y140

320

LPRINT'GOl X360

Y140

330 LPRINT'GOl

X360

Y180

340

LPRINT'GOl X415

Y180

350 LPRINT'GOl

X415

YO

360

LPRINT'GOl

X340 YO

370 LPRINT"G50

X346 Y27

380

LPRINT"G02

10

J-22

DRAWING "RADIO"

110

J50

15 J3

10

1-10

10

J35

J-42

J-5

1-4

J-70

-28

390

LPRINT"G50

X430

YO

400

LPRINT'GOl

X430

Y140

410

LPRINT'GOl

X490

Y140

420

LPRINT"G01

X490 YO

430 LPRINT"G01

X430 YO

440

LPRINT"G50

X570

YO

450 LPRINT"G02

10

J-75

460

LPRINT"G50

X570

Y33

470

LPRINT"G02

10 J-22

480

REM

DRAWING

'SHA

490 LPRINT"G50

X685 YO

500 LPRINT'GOl

X685

Y50

510

LPRINT'GOl

X698

Y50

520

LPRINT"G03

X718

Y70

10 J-20

530

LPRINT'GOl

X720 Y125

540

LPRINT"G02

X770

Y175 1-50

JO

550 LPRINT'GOl

X805

Y175

560

LPRINT'GOl

X805 Y120

570

LPRINT'GOl

X790

Y120

580

LPRINT"G03

X772

Y102

10 J20

590

LPRINT'GOl

X770

Y50

600

LPRINT"G02

X720 YO

150

JO

610 LPRINT'GOl

X685

YO

620 LPRINT"G50

X812 YO

630 LPRINT"G01

X812

Y175

640

LPRINT"G01

X865

Y175

650

LPRINT"G01

X865

Y140

660

LPRINT'GOl

X885

Y140

670

LPRINT"G02

X935 Y90

10

J50

680

LPRINT"G01

X935 YO

690 LPRINT'GOl

X880

YO

700 LPRINT"G01

X880

Y85

710 LPRINT"G03

X866

Y85

17

JO

720

LPRINT"G01

X866 YO

730

LPRINT"G01

X812 YO

740

LPRINT"G50

X955

Y95

750

LPRINT'GOl X955 Y140

760

LPRINT'GOl

X1035

Y140

770

LPRINT"G02

X1070

Y105

10

J35

780 LPRINT"G01

XI 070 YO

790 LPRINT"G01

X980

YO

800 LPRINT"G02

X985

Y85

1-10

J-42

810

LPRINT'GOl

XI 000

Y85

29-

820

830

840

850

860

870
880
890
900

910
920
930

940

950

960

970
980
990

1000

1010

1020

1030
1040

1050

1060

1070
1080

1090

LPRINT"G03

LPRINT'GOl

LPRINT"G50

LPRINT"G02

LPRINT"G50
LPRINT"G02

LPRINT'GOl

LPRINT"G03

LPRINT'GOl

LPRINT"G50

LPRINT'GOl

LPRINT'GOl
LPRINT'GOl

LPRINT"G03

LPRINT'GOl

LPRINT'GOl

LPRINT'GOl

LPRINT'GOl

LPRINT'GOl

LPRINT'GOl

LPRINT"G03

LPRINT'GOl

LPRINT'GOl

LPRINT"G50

XI 000

X955

X977

1-22

X1210

X1215
X1165

XI 165

X1210
X1223

XI 223
XI 263
XI 263

X1271

XI 290

X1340

X1315

XI 340

X1285
X1275

X1263

XI 263

X1223

XI

20

Y95

Y95

Y50

JO

Y45

Y60

Y60

Y45

Y45

YO

Y170
Y170

Y95

Y97

Y120
Y120

Y80

YO

YO

Y42

Y42

YO

YO

Y-300

10

J-5

163

120

J

-27

J7

1-3

JO

16

JO

LPRINTCHR$(1)CHR$(5)"TRS-80"CHR$(3):LPRINT

LPRINT

CHR$(4)"

LPRINTCHR$(3)"

LPRINT

CHR$(6)"

ALPHANUMERIC

CHARACTERS

1100

LPRINT

1105

LPRINT"

1106

LPRINT

1107

LPRINT"

1108

LPRINT

1110

LPRINT"

AND

'CURVES'

1120 LPRINT

1130 REM

1140

LPRINT CHR$(2)

1150 LPRINT"G50

X650

1160

LPRINT"G02

XO

1170

LPRINT'GSO

X-700

1180

LPRINT'GOl

X700

PL0TTER/PRINTER"CHR$(6):LPRINT:LPRINT

WRITING

WITH

BALL-POINT

PEN

YOU CAN

PRINT

AT FOUR

ANGLES

OF

ROTATION

YOU

CAN

ALSO PLOT

'STRAIGHT

LINES',

'DOTTED

LINES'

DRAWING

COORDINATE

SYSTEM

Y-730

YO

30-

1190 LPRINT"G50

X0

Y-700

1200

LPRINT'GOl

Y700

1210

REM

DRAW

HYPERBOLA

1220

LPRINT"G50

X-690

Y-30

1

230 FOR

X=-690 TO

690 STEP

20

1240

Y=21000/X:IF

X<19 AND

X>-19

THEN

1270

1250

IF X=30

THEN

LPRINT"G50

X"X"Y"Y

1260

LPRINT"G01

X"X"Y"Y

1270

NEXT

1280

REM

DRAW

PARABOLA

1290

LPRINT"G50

X-500

Y700

1

300 FOR

X=-500

TO

500 STEP

1

1310 Y=X*X/357

1320

LPRINT"G01

X"X"Y"Y

1330 NEXT
1340

REM

DRAW

CIRCLE

1350

LPRINT"G50

X500 Y0

1360

LPRINT"G02

1500

1370 .REM

DRAW

SINE

1380

LPRINT"G50X-700

1390

FOR

X=-700

TO

700 STEP

20

1400

Y=SIN(X/1

1

1

.4)*300:LPRINT"G01

X"X"Y"Y

1410

NEXT

1420

REM

DRAW

DOTTED

LINE

1430

LPRINT"G50

X-700

Y-700

1440

LPRINT"G00

X700 Y700

1450 REM

ROTATE

CHARACTERS

1460

LPRINT"G50

X750 Y190

1470

LPRINT

CHR$(1)CHR$(18)"PL0TTER/PRINTER";

1480

LPRINT

CHR$(2)

1490

LPRINT"G50

U-570

V-570

1500

LPRINT

CHR$(1)CHR$(19)"PL0TTER/PRINTER";

1510

LPRINT

CHR$(2)

1520

LPRINT"G50

U-570

V570

1

530

LPRINT

CHR$(1)CHR$(20)"PLOTTER/PRINTER";

1540

LPRINT CHR$(2)

1550

LPRINT"G50

U100 V140

1

560 LPRINT

CHR$(1)CHR$(1

7)"Y=SIN(X)";

1570

LPRINT

CHR$(2)

1580

LPRINT"50

U20

V300

31-

1590

LPRINT

CHR$(1)"Y=X";

1600 LPRINT

CHR$(2)

1610

LPRINT"G50

V20

1620

LPRINT

CHR$(1)"2"

;

1630

LPRINT

CHR$(2)

1640

LPRINT"G50

U430

V-20

1650

LPRINT

CHR$(1)"Y=1/X";

1660

LPRINT

CHR$(2)

1670

LPRINT"G50

U320

V-150

1680

LPRINT

CHR$(1)"Y=X";

1690

LPRINT

CHR$(2)

1700

LPRINT"G50

U-420

V-1000

1710

LPRINT

CHR$(1)"X=SIN(T),

Y=COS(T)";

1720

LPRINT

STRINGS

(25,

10)

1730

END

32-

ASCII Code Table

Decimal

Hex Function

Decimal

Hex

Character

21 15

1 1

C.

MODE

22 16

2 2

P.

MODE 23

17

3 3

2MUL

24

18

4

4 4MUL

25 19

5

5

8MUL 26 1A

6 6 1MUL 27

IB

7

7 28

1C

8 8

BS

29 ID

9 9

30 IE

10

A

LF 31 IF

11

B

32

20

SP

12

C

33

21

!

13 D CR.LF

34

22

»>

14

E 35 23

#

15 F 36 24

$

16 10 37 25

17 11 Rotate

38 26 &

18 12

Rotate

90 39 27

»

19

13

Rotate

180

40 28

(

20 14 Rotate

270

41

29

)

33-

Decimal Hex

Character Decimal Hex

Character

42

2A

*

63 3F

9

43

2B

+ 64

40

@

44

2G

?

65 41

A

45

2D

-

66

42

B

46

2E

67 43

C

47

2F

/

68 44

D

48

30

69 45

E

49

31 1

70

46 F

50

32

2

71

47

G

51 33

3 72

48

H

52 34 4

73 49

I

53

35

5

74

4A

J

54

36 6 75

4B

K

55

37 7 76

4C

L

56

38 8 77

4D

M

57

39 9 78

•

4E

N

58

3A

:

79

4F

59

3B

J

80

50

P

60

3C

<

81 51

Q

61

3D

=

82

52

R

62 3E >

83

53

S

-34

Decimal Hex Character

Decimal

Hex

Character

84

54

T

104

67

H

85

55

U

105

68

I

86

56 V

106

69

J

87

57

w

107

6A

K

88

58

X

108

6B

L

89

59 Y

109

6D

M

90

5A

Z

110 6E

N

91 5B

111

6F

O

92

5C

112

70

P

93

5D

113

71

Q

94

5E

114

72

R

95 5F

115

73

S

96

60

116 74

T

97

61 A

117

75

U

98 62

B

118

76

V

99

63

C

119

77

w

100

63 D

120

78

X

101 64

E

121

79

Y

102

65

F

122

7A

Z

103

66

G

C.

MODE

: Sets

to

character

mode

: (

3 degree

code

(C)

P.

MODE :

Sets

to

plotter mode

90

•

<

?0 degree

code

(C)

1 MUL

Base

size characters

(C)

18C

1

:

180

degree

code

(C)

2MUL

: Twice

base size

(C)

27C

I

:

:270 degree

code

(C)

4 MUL :

Four

times base

size

(C)

BS

: ]

Back

space code

(C)

8 MUL

Eight times

base size

(C)

LF

: ]

line

feed

code

(C)

CR. LF : Carriage

return

line feed

asde

(C)

-35

SPECIAL

NOTES

Replacement

of the ball-point

pen.

When

the pen

runs dry, open

the front

cover

and

carefully

remove

the

pen

without moving

the head

position.

Replacement

black

pens can

be obtained through

your local

Radio

Shack store

or

Computer

Center. Also many

stationery supply

stores

will

have suitable

replacements;

use

Fisher

Pen

type

PR4M

(medium

reproduceable

black). We

recommend

the use of medium

point

pens

because

some

Fisher

fine

point pens

do not fit properly

in the Plotter

Printer.

Other colors are

available

(Fisher Pen type

PR-4).

If

not available locally,

contact:

FISHER PEN

CO

Customer

Service

743 Circle Avenue

Chicago,

Illinois

60630

Phone

#800-323-3918

PRECAUTIONS

*

When the POWER

switch is

ON, be

sure the pilot lamp

is

lit.

*

Be sure the connectors are firmly

attached.

*

Be sure

the cover

is

fully

closed.

*

Do

not operate the Plotter Printer

in locations where it will

be exposed

to direct

sunlight,

excessive

dust or dirt, excessive moisture, or heat

sources (such as radiators,

hot

air vents, etc.).

*

Always position the Plotter

Printer on a firm, level surface.

*

Be sure

to start printing with

a

continuous

line (not

dots) to get the

ink flowing.

*

Do not

print too

many

dots

consecutively or the pen will dry

out. (The

ballpoint

needs to roll.)

-36

Connector

Connection

Diagram

TRS-80

PLOTTER

PRINTER

2

3

4

5

6

STROBE

DATA

1

DATA
DATA

DATA

DATA
DATA

DATA

7

DATA

8

NC

BUSY

OUT

PAPER

SELECT

GND

NC

GND

GND

GND
GND

GND

GND

GND
GND

GND

GND

GND

GND

GND

GND
GND

FAULT

PRIME

NC
NC

GND

1>

2>

3>

4>
5>
6>
7>

£

9>

10

H>

12>

13>

14>

15>

16>
17>

18>

20

>

21

>

22>

23

>

24>-

25

>-

26>

27>-
28>-

29

>-

30 >

31>

32>

33

>

34

>

35

>

36

>

1

2

3

4

5

6

7
8
9

10

11

12

< 13

14

15

16
17

-<

18

<

19

-<

20

-<

21

-<

22

-<

23

<

24

-<

25

-<

26

<

27

-<

28

-<

29

<

30

<

31

<

32

<

33

<

34

<

35

<

36

STROBE

DATA

DATA

DATA
DATA

DATA

DATA
DATA

DATA

8

NC

READY

GND

NC

+5V

GND

GND
GND

GND

GND

GND
GND
GND

GND

GND
GND

-37-

Interface

Timing

i

S1g1~8 W

(Input)

^

t Xi

TSIS

—

TISW

STB

(Input)

\

^

T,L

^TISS

BUSY

BUSY

Output

TIB

i

l

L

READY

Note: 1

. Input signal

level

[H] 2V to 5.25V

[L] OV to 0.8V

2.

When

STB

is in [L]

level

continuous-

ly, it

will not

become READY.

SYM

PARAMETER

MIN

MAX

TSIS

Signal

Input set TIME

0.2mS

TIL

Input

Load

TIME

I.OjuS

60juS

TIB

Input

Busy TIME

HOmS

TISS

Input

Strobe Set

TIME

OmS

TISW

Input Strobe

Pulse

Width TIME

2.0/xS

-38-

®

D

R/PRINTER

WRITING WITH BALL-POINT

PEN

YOU CAN PRINT

ALPHANUMERIC CHARACTERS

AT

FOUR ANGLES

OF ROTATION

YOU CAN

ALSO PLOT

'STRAIGHT

LINES'

>

'DOTTED

LINES' AND

'CURUES'.

UJ

<k

OL

UJ

I—
I—

o

s!

X=SIN(T),Y=COS(T)

~v

t—

o
m

73

m

*GiNiad/a3iio"id

-39-

SPECIFICATIONS

Printing

System:

Printing

Speed:

Step-by-step Speed:

Step

Dimensions:

Control

codes:

Characters-per-line

:

Character Spacing:

Line-feed Spacing:

Paper Size:

Life of ball-point pen:

Power

Requirements:

Noise Level:

Dimensions:

Weight:

Ambient

Temperature:

Recording

Accuracy:

a

vVv c

W

Ball-point pen

Average 10 characters/sec

(base size characters)

667 steps/second

0.09525 mm

for both X

and Y axes

-

3

/$>&o

"

hh'f

Standard

ASCII

Code

(characters

& symbols)

plus special

control

codes

80

maximum with

auto

wraparound

2.3

mm

(24

steps)

4.2 mm

(44

steps)

9"

(8-1/2"

sprocket width)

7-3/8"

effective width for writing

(75

characters)

(Catalog number

26-1407)

Approx

500,000

characters

(4500

meters)

(Ball-point pen: Radio shack part

number

ACT-0165)

120

Volts,

60

Hz

(220/240

VAC on

European/Australian

models)

120 VA

(max inrush current

=

25 A

for 5mS or less)

70

dB

at 1

meter

6.4 x

15.9

x

12.3in(HxWxD)

(162

x405 x313 mm)

1

5 lbs

(7

kg) without paper

Operation: 41 to

104°F

(5

to 40°C)

Storage:

14tol22°F

(-10to50°C)

Operation: 40

to

80%

Storage: 20

to

90%

(non-condensing)

Relative accuracy : 0. 1

5%

or less

Repeatability: 0.1 mm or less

*

Relative

accuracy is

defined

as

follows:

(Theoretical Distance)

-

(Actual

Distance)

Theoretical Distance

X100

=

(Distance refers to the distance that the pen

travels/should travel)

Paper rewinding

length

allowable :

0.5 m

-40-

Warning:

This

equipment

generates, uses,

and

can

radiate

radio frequency energy

and if not

installed

and

used

in

accordance

with

the

instructions

manual, may

cause inter-

ference

to radio

communications.

It

has

been

tested and found

to comply with

the

limits

for

a Class

A computing

device

pursuant to

Subpart J of Part

1

5

of

FCC Rules,

which

are designed

to provide

reasonable

protection against

such interference

when

operated

in

a commercial

environment.

Operation of this equipment

inaresidential

area is

likely

to cause

interference in

which

cause the user at

his own expense

will

required to take

whatever measures may

be required to correct

the interference.

SERVICE POLICY

Radio Shack's

nationwide

network of service facilities provides quick,

convenient,

and reliable

repair services

for all of its computer products, in most

instances.

Warranty

service will

be performed in accordance with Radio Shack's

Limited

Warranty.

Non-warranty service

will

be

provided at reasonable parts and

labor

costs.

Because of the sensitivity

of computer equipment, and the problems which

can

result from

improper servicing,

the following limitations also apply

to

the

services

offered

by

Radio

Shack:

1

.

If any

of

the

warranty seals

on

any

Radio Shack computer products are broken,

Radio

Shack reserves the right

to refuse to service the equipment or to void

any

remaining warranty

on the

equipment.

2.

If

any Radio Shack

computer equipment

has been

modified

so that it is not

within

manufacturer's

specifications, including, but not

limited

to, the installation

of any non-Radio

Shack parts,

components,

or replacement

boards, then Radio

Shack

reserves the right

to refuse to service the equipment, void any remaining

warranty,

remove and replace

any non-Radio Shack

part found

in the equip-

ment, and

perform

whatever modifications are necessary to return the

equip-

ment

to

original

factory

manufacturer's specifications.

3. The cost for the labor and

parts required

to

return the Radio

Shack computer

equipment

to

original

manufacturer's specifications will

be

charged to the

customer

in addition

to

the normal

repair charge.

LIMITED

WARRANTY

For

a period of

90 days from

the date of delivery,

Radio Shack

warrants

to the

original

purchaser

that

the

computerhardware

unit shall

be

free from

manufac-

turing

defects.

This

warranty

is

only

applicable to the

original

purchaser

who

purchased the

unit from

Radio Shack

company-owned

retail

outlets or

duly

authorized

Radio

Shack

franchisees

and dealers. This

warranty

is voided

if

the

unit

is sold or

transferred

by

purchaser

to

a

third

party. This

warranty

shall

be

void if this

unit's

case or cabinet

is

opened, if the unit

has

been

subjected

to

improper or

abnormal

use,

or if

the unit

is altered or

modified.

If

a defect occurs

during the warranty

period, the unit

must

be

returned

to

a Radio

Shack store,

franchisee,

or dealer for

repair,

along with

the sales

ticket or

lease

agreement.

Purchaser's

sole and

exclusive

remedy in the

event of

defect is limited

to the

correction of

the defect

by adjustment, repair,

replacement,

or

complete

refund

at Radio Shack's

election and

sole expense. Radio

Shack

shall have

no

obligation

to replace

or repair

expendable items.

Any

statements

made

by

Radio

Shack and its

employees,

including

but not

limited

to, statements regarding

capacity, suitability

for

use, or

performance

of

the unit shall not

be deemed a warranty or

representation

by Radio

Shack for

any

purpose, nor give

rise to any liability

or obligation of

Radio

Shack.

EXCEPT

AS SPECIFICALLY

PROVIDED

IN THIS WARRANTY

OR IN THE

RADIO

SHACK COMPUTER

SALES AGREEMENT,

THERE

ARE

NO

OTHER

WARRANTIES,

EXPRESS OR IMPLIED,

INCLUDING,

BUT

NOT

LIMITED

TO, ANY

IMPLIED WARRANTIES

OF MERCHANTABILITY

OR

FITNESS FOR

A PARTICULAR

PURPOSE. IN NO EVENT

SHALL

RADIO

SHACK

BE LIABLE FOR

LOSS OF PROFITS OR BENEFITS,

INDIRECT,

SPECIAL,

CONSEQUENTIAL OR

OTHER SIMILAR DAMAGES

ARISING

OUT OF ANY

BREACH

OF

THIS

WARRANTY OR OTHERWISE.

7-80

is

^1

RADIO

SHACK M

A

DIVISION

OF TANDY

CORPORATION

U.S.A.: FORT

WORTH.

TEXAS

76102

CANADA:

BARRIE.

ONTARIO

L4M

4W5

AUSTRALIA

280

316

VICTORIA

ROAD

RYOALMERE.N.S.W.2116

TANDY

CORPORATION

BELGIUM

PARC

INDUSTRIEL

0E NANINNE

5140NANINNE

U.K.

BILSTON

ROAD WEDNESBURY

WEST MIDLANDS

WS10

7JN