GeoBasic_Programming_Manual.pdf

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GeoBasic
Programming
Manual
-
The Official BASIC Programming Language
for GEOSC-64/128 Users
Developed by Berkeley Softworks
Distributed by RUN Magazine
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geoBASIC
The BASIC programming language for GEOS C-64/128 users.
geoBASIC software (c) 1990 Berkeley Softworks.
Portions of the geoBASIC manual (c) 1990 Berkeley Softworks.
Changes and enhancements to the manual (c) 1990 RUN
Magazine.
geoBASIC and GEOS are trademarks of Berkeley Softworks.
IDG Communications/Peterborough, Inc. (Publishers of RUN
Magazine), has licensed geoBASIC from Berkeley Softworks.
Berkeley Softworks disclaims all responsibility for warranty,
guarantee, replacement and service of geoBASIC.
Customer service and technical support questions should be
referred to RUN Magazine, 80 Elm St., Peterborough, NH 03458.
Technical support is also provided on the RUN geoBASIC area on
QuantumLink.
RUN and Berkeley Softworks disclaim any liability for incidental
or consequential damages.
geoBASIC runs in C-64 mode (40 columns) on C-64/128.
JUNE 1990
Dear geoBASIC owner,
Congratulations and thank you for purchasing geoBASIC.
You are the proud owner of a powerful version of BASIC that
gives GEOS users the flexibility to develop their own programs in
BASIC. With this product (in C-64 40-column mode) you have
everything you need to begin developing your own BASIC appli
cations in GEOS, taking advantage of the features that have made
GEOS so easy to use—pull-down menus, dialog boxes, icons and
mouse pointer for easy point-and-click operations. You'll now be
able to create programs that use icons, menus, sprites and dialog
boxes.
We're pleased to be able to present geoBASIC, and plan to
support this product both through the magazine and in the RUN
geoBASIC area on QuantumLink. We encourage users to upload
the programs they have developed to the Q-Link area and also to
submit their work to RUN for possible publication. We also
encourage users to access the Q-Link area for information on the
latest geoBASIC developments, programming information,
forums, software to download, sample applications and answers to
your questions and comments.
We were encouraged by the GEOS community to bring this
product to market. We have worked diligently to provide a top-
quality and much-needed product to the marketplace. We feel that
we have succeeded, and welcome your comments regarding our
efforts.
In putting together this manual, we made several assumptions.
One is that you are familiar with GEOS and know how to load and
open GEOS files.
Also, it is not the intent of this manual to teach you how to
ii
program. If you are interested in using geoBASIC, then you should
already be familiar with BASIC programming. If you've never
programmed before, then we strongly suggest that you develop
some BASIC programming skills either through a course or a book
before you use this program. The purpose of this manual is to
teach you how to use geoBASIC and its commands.
I would like to extend my appreciation to the following:
First, to the gang at Berkeley Softworks for developing this
program and licensing it to RUN. Through their cooperation, we
are able to bring this product to market.
Second, to project manager Lou Wallace, who was the driving
force for this product here at RUN. Without his persistence, long
hours under impossible deadlines, foresight and dedication to this
project, geoBASIC would not now be available to the GEOS
community.
Third, to the group of tireless testers and reviewers of this
product, particularly Joe Buckley and Bill Coleman. These
programming wizards were responsible for testing and developing
applications. Their keen insights and knowledge of GEOS
contributed to the success of this product.
This manual contains all the information you need to get under
way developing your own programs in GEOS. All you need
besides this manual is a little imagination. Good luck and happy
programming.
Dennis Brisson
Editor-in-Chief
RUN
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