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TOPIC -- AIM Computer -- AIM BASIC Language Reference Manual

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AIM 65 MICROCOMPUTER BASIC LANGUAGE REFERENCE MANUAL

Rockwell International Corporation

Document No 29650 N49

March 1979

TABLE OF CONTENTS

100 Installing BASIC in the AIM 65

200 Getting Started With Basic

201BASIC Command Set

202Direct and Indirect Commands

203Operating on Programs and Lines

204Printing Data

205Number Format

206Variables

207Relational Tests

208Looping

209Matrix Operations

210Subroutines

211Entering Data

212Strings

300 Statement Definitions

301Special Characters

302Operators

303Commands

304Program Statements

305Input/Output Statements

306String Functions

307Arithmetic Functions

AError Messages

BSpace Hints

CSpeed Hints

DConverting BASIC Programs not Written for AIM 65 BASIC

EASCII Character Codes

FAssembly Language Subroutines

GStoring AIM 65 BASIC Programs on Cassette

HATN Implementation

INTRODUCTION

Before a computer can perform any useful function, it must be "told" what to do. Unfortunately, at this time, computers are not capable of understanding English or any other "human" language. This is primarily because our languages are rich with ambiguities and implied meanings. The computer must be told precise instructions and the exact sequence of operations to be performed in order so accomplish any specific task. Therefore, in order to facilitate human communication with a computer, programming languages have been developed.

Rockwell AIM 65 8K BASIC by Microsoft is a programming language both easily understood and

simple to use. It serves as an excellent "tool" for applications in areas such as business, science, and education. After only a few hours of using BASIC, you will find that you can already write programs with an ease that few other computer languages can duplicate.

Originally developed at Dartmouth University, the BASIC language has found wide acceptance in

the computer field. Although it is one of the simplest computer languages to use, it is very powerful. BASIC uses a small set of common English words as its "comnmands." Designed specifically as an "interactive" language, you can give a command such as "PRINT 2 + 2," and BASIC will immediately reply with "4." It is not necessary to submit a card deck wish your program on it and then wait hours for the results. Instead, the full power of the computer is "at your fingertips."

We hope that you enjoy BASIC, and are successful in using it to solve all of your programming

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Apple II manual AIM 65 Microcomputer Basic Language Reference Manual, Table of Contents, Introduction

II specifications

The Apple II, launched in April 1977, was one of the first highly successful mass-produced microcomputer products. It marked a significant leap in personal computing, setting standards for future developments in the industry. Created by Steve Wozniak and Steve Jobs, the Apple II differentiated itself with its user-friendly design, appealing aesthetics, and robust capabilities.

One of the standout features of the Apple II was its open architecture, which allowed users to expand and enhance the computer's functionality. This design enabled hundreds of third-party hardware and software developers to contribute to its ecosystem, resulting in an array of peripherals, including printers, modems, and storage devices. The Apple II utilized a MOS Technology 6502 microprocessor running at a clock speed of 1 MHz. Initially equipped with 4 KB of RAM, the machine could be expanded to 48 KB, accommodating more complex applications and programs.

The Apple II was also notable for its colorful graphics. It was one of the first computers to support color display, offering a 6-color palette with a resolution of 280x192 pixels in 16 colors when using its Color Graphics Card. This feature significantly enhanced the visual appeal of games and educational software developed for the platform, making computing more accessible and entertaining for various audiences.

Apple's commitment to user experience was evident in the design of the machine. It featured an integrated keyboard and a plastic case, which was both durable and visually appealing. The self-contained design included drive bays for floppy disk drives, allowing for quicker data access than traditional tape drives. It also supported audio output, enabling sound effects and music, a novelty at the time.

The introduction of the Apple DOS operating system further underscored the machine's capabilities. DOS streamlined file management and made it easier for users to navigate and manage their data. The combination of hardware and software positioned the Apple II as an educational tool and a gaming platform, fostering a vibrant software ecosystem.

The Apple II family continued to evolve, with variations like the Apple II+, IIe, and IIgs being introduced over the years. These iterations brought enhancements in memory, processing power, and graphics capabilities. The legacy of the Apple II endures, not only as a foundational product in personal computing but also as a symbol of innovation that paved the way for future advancements in technology. Its impact is still felt today, as it inspired countless developers and shaped the trajectory of the computer industry.