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Radio Shack TRS-80 X-PAD GT-116 User manual

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Cadalocj Number 26-1196
Radio /hack
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TERMS AND CONDITIONS OF SALE AND LICENSE OF RADIO SHACK COMPUTER EQUIPMENT AND SOFTWARE PURCHASED FROM ARADIO SHACK
COMPANY-OWNED COMPUTER CENTER, RETAIL STORE OR FROM ARADIO SHACK FRANCHISEE OR DEALER AT ITS AUTHORIZED LOCATION
CUSTOMER OBLIGATIONS LIMITED WARRANTY
A. CUSTOMER assumes full responsibility that this Radio Shack computer hardware purchased (the "Equipment"), and any copies of Radio Shack software included with the
Equipment or licensed separately (the "Software") meets the specifications, capacity, capabilities, versatility, and other requirements of CUSTOMER.
B. CUSTOMER assumes full responsibility for the condition and effectiveness of the operating environment in which the Equipment and Software are to function, and for its installation.
II. RADIO SHACK LIMITED WARRANTIES AND CONDITIONS OF SALE
A. For aperiod of ninety (90) calendar days from the date of the Radio Shack sales document received upon purchase of the Equipment, RADIO SHACK warrants to the original
CUSTOMER that the Equipment and the medium upon which the Software is stored is free from manufacturing defects. THIS WARRANTY IS ONLY APPLICABLE TO PURCHASES OF
RADIO SHACK EQUIPMENT BY THE ORIGINAL CUSTOMER FROM RADIO SHACK COMPANY-OWNED COMPUTER CENTERS, RETAIL STORES AND FROM RADIO SHACK
FRANCHISEES AND DEALERS AT ITS AUTHORIZED LOCATION. The warranty is void if the Equipment's case or cabinet has been opened, or if the Equipment or Software has been
subjected to improper or abnormal use. If amanufacturing defect is discovered during the stated warranty period, the defective Equipment must be returned to aRadio Shack
Computer Center, aRadio Shack retail store, participating Radio Shack franchisee or Radio Shack dealer for repair, along with acopy of the sales document or lease agreement. The
original CUSTOMER'S sole and exclusive remedy in the event of adefect is limited to the correction of the defect by repair, replacement, or refund of the purchase price, at RADIO
SHACK'S election and sole expense. RADIO SHACK has no obligation to replace or repair expendable items.
B. RADIO SHACK makes no warranty as to the design, capability, capacity, or suitability for use of the Software, except as provided in this paragraph. Software is licensed on an "AS
IS" basis, without warranty. The original CUSTOMER'S exclusive remedy, in the event of aSoftware manufacturing defect, is its repair or replacement within thirty (30) calendar
days of the date of the Radio Shack sales document received upon license of the Software. The defective Software shall be returned to aRadio Shack Computer center, aRadio
Shack retail store, participating Radio Shack franchisee or Radio Shack dealer along with the sales document.
C. Except as provided herein no employee, agent, franchisee, dealer or other person is authorized to give any warranties of any nature on behalf of RADIO SHACK.
D. Except as provided herein, RADIO SHACK MAKES NO WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE.
E. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation(s) may not apply to CUSTOMER,
III. LIMITATION OF LIABILITY
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LIABILITY, LOSS OR DAMAGE CAUSED OR ALLEGED TO BE CAUSED DIRECTLY OR INDIRECTLY BY "EQUIPMENT" OR "SOFTWARE" SOLD, LEASED, LICENSED OR FURNISHED
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D. CUSTOMER shall not use, make, manufacture, or reproduce copies of Software except for use on one computer and as is specifically provided in this Software License. Customer is
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E. CUSTOMER is permitted to make additional copies of the Software only for backup or archival purposes or if additional copies are required in the operation of one computer with the
Software, but only to the extent the Software allows abackup copy to be made. However, for TRSDOS Software, CUSTOMER is permitted to make alimited number of additional
copies for CUSTOMER'S own use.
F. CUSTOMER may resell or distribute unmodified copies of the Software provided CUSTOMER has purchased one copy of the Software for each one sold or distributed. The
provisions of this Software License shall also be applicable to third parties receiving copies of the Software from CUSTOMER.
G. All copyright notices shall be retained on all copies of the Software.
V. APPLICABILITY OF WARRANTY
A. The terms and conditions of this Warranty are applicable as between RADIO SHACK and CUSTOMER to either a sale of the Equipment and/or Software License to CUSTOMER or to a
transaction whereby RADIO SHACK sells or conveys such Equipment to athird party for lease to CUSTOMER.
B. The limitations of liability and Warranty provisions herein shall inure to the benefit of RADIO SHACK, the author, owner and/or licensor of the Software and any manufacturer of the
Equipment sold by RADIO SHACK.
VI. STATE LAW RIGHTS
The warranties granted herein give the original CUSTOMER specific legal rights, and the original CUSTOMER may have other rights which vary from state to state.
IMPORTANT INFORMATION
This equipment generates and uses radio frequency energy. If it is
not installed and used properly, that is, in strict accordance with the
manufacturer's instructions, it may cause interference to radio
and television reception. It has been type tested and found to
comply with the limits for aClass Bcomputing device in accordance
with the specifications in Subpart Jof Part 15 of FCC Rules, which
are designed to provide reasonable protection against such inter-
ference in aresidential installation. However, there is no guarantee
that interference will not occur in aparticular installation. If this
equipment 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
:
•reorient the receiving antenna
•relocate the computer with respect to the receiver
•move the computer away from the receiver
•plug the computer into adifferent outlet so that computer and
receiver are on different branch circuits.
If necessary, the user should consult the dealer or an experienced
radio/television technical for additional suggestions. The user may
find the following booklet prepared by the Federal Communications
Commission helpful: How to Identify and Resolve Radio-TV
Interference Problems, This booklet is available from the United
States Government Printing Office, Washington, DC 20402, Stock
No. 004-000-0035-4.
Warning: This equipment has been certified to comply with the
limits for aClass Bcomputing device, pursuant to Subpart Jof Part
15 of FCC Rules. Only peripherals (computer input/output devices,
terminals, printers, etc.) that are certified to comply with the Class
Blimits may be attached to this computer. Operation with non-
certified peripherals is likely to result in interference to radio and
TV reception.
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 service
the equipment or to void any remaining warranty on the equip-
ment.
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 equipment, and perform whatever modifications are
necessary to return the equipment to original factory manufac-
turer's specifications.
3. The cost for the labor and parts required to return the Radio
Shack computer equipment to original manufacturer's specifica-
tions will be charged to the customer in addition to the normal
repair charge.
To Our Customers ..
.
The TRS-80® X-Pad (Model GT-116) is arevolutionary
way to take advantage of the high-resolution graphic
capabilities of your TRS-80 Color Computer.
With aminimum of programming, the X-Pad lets you plot
graphics that are displayed on your Color Computer's TV
Screen. Furthermore, all graphic displays can be saved on
cassette tape for later use or printed on agraphics printer
for "hard-copy" output.
The X-Pad will open an entire world of graphic
applications for you —mapping, graphic displays,
statistics, waveform analysis, marketing analysis, and
charting, to name just afew. Besides that, it's fun!
To use X-Pad, you'll need a:
•16K or 32K Color Computer with Extended Color
BASIC.
•Color TV.
And while not required, it is extremely convenient to save
your programs on cassette; we suggest the CTR-80A
Cassette Recorder (Radio Shack Catalog Number
26-1206).
About This Manual ..
.
In this manual, we'll be showing you how to program and
use your X-Pad.
We're going to follow this course:
•First we'll be describing how to connect the X-Pad.
•Then we'll let you try afew short programs.
•Next we'll discuss the X-Pad, its parts and its
functions, in detail.
•We'll also show you afew programs you can use.
You might find it convenient to review the Extended
Color BASIC manual (Going Ahead With Extended Color
BASIC) before using the X-Pad.
TRS-80® X-Pad Owner's Manual
©1982 Tandy Corporation
All Rights Reserved
Reproduction or use, without express written permission
from Tandy Corporation, of any portion of this manual is
prohibited. While reasonable efforts have been taken in
the preparation of this manual to assure its accuracy,
Tandy Corporation assumes no liability resulting from
any errors or omissions in this manual, or from the use of
the information obtained herein.
CONTENTS
Introduction 1
1/ Getting Started 3
2/ Meet Your X-Pad (Line, Box, Point) 5
3/ The X-Pad's Surface Area 9
4/ It's aBird, It's aPlane, No It's ...X-Pad! 15
5/ Art For X-Pad's Sake (Drawing) 17
6/ From Here to Eternity (Length) 19
II Plenty of Air and Plenty of Room (Area) 21
8/ Circling the Landing X-Pad (Circles) 23
9/ Brushing on the First Coat (Painting) 25
10/ Menu or Ala Carte? (Menu) 31
11/ ADisplay Saved .. . (CSAVEM/CLOADM) 35
12/ Troubleshooting and Maintenance 39
Appendix A/ Specifications 41
Appendix B/ Pen Status Summary 43
Appendix C/ Chapter Checkpoint Answers 45
Appendix D/ X-Pad Data Interpretation 47
Appendix E/ Template/Menu Demonstration Program 49
Appendix F/ Defining Your Own Menu Commands 55
Important Note!
Be sure your Color Computer is turned OFF before you
insert or remove the X-Pad's Interface Pak; otherwise,
damage to the Color Computer or X-Pad (or both) may
occur.
Introduction
The TRS-80 X-Pad is basically an X-Y coordinate
digitizer that converts aposition on the X-Pad into an
equivalent position on the TV Screen of the Color
Computer-
After coordinates are digitized by the X-Pad and sent to
the Color Computer, the Computer reads the data (e.g.,
the X-Y coordinates) and interprets that information
according to the program you're currently running.
Sometimes you might use the X-Pad to calculate the
distance between two points or compute the area of a
geometric figure. Other times, your program might allow
you to draw lines, boxes, circles, or any other graphic
display you can imagine.
In other words, the same graphic figures you're drawing
on the X-Pad appear on the Color Computer's TV Screen
—but in full color. As you can imagine, the graphic
possibilities are nearly endless!
It's important to remember, however, that the X-Pad does
not do this "automatically". The action of the X-Pad
depends upon the program you're running with the Color
Computer.
In this manual, we've included many sample programs
you can use, but we're also going to show you how to write
your own programs (and we hope you will!).
1/ Getting Started . .
.
Before setting up the X-Pad, you'll need to connect your
Color Computer to the TV. See your TRS~80mColor
Computer Operation Manual for details. Do not turn the
Computer's power ON!
Figure 1. X-Pad
The X-Pad consists of three parts. These are the:
•Pen which enables communication between the X-Pad
and the Computer,
•Pad which is the base of the GT-116 and which has an
8-1/2" x11" Writing Surface. Do not write on the Pad!
Always be sure to have asheet of paper covering the
Pad's surface.
•X-Pad Interface Pak which is inserted into the
cartridge slot on the right side of the Color Computer.
Setting Up the X-Pad
Each time you use the X-Pad, you should put asheet of
standard-sized 8-1/2" xIT' paper over the Writing Surface
of the Pad,