Programming_and_Interfacing_6502_with_Experiments.pdf

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651

PROGRAMMING

• INTERFACING

THE 6502,

WITH EXPERIMENTS

MARVIN L.

JO NG

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CONTINUING EDUCATION S

.EAIES

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edite

by Larsen

rllus

Titus

The Blacksburg Continuing Education™ Series

The Blatksburg

Continuing

Education Series

TlII

of books provide

laboratory-or

elCperiment-

oriented

approach

to electronic

topics. Present and

forthcoming

lilies

this series include:

•

Advonced 6502 Interfadng

Analog

Instrumentation Fundamental.

Apple Assembly

languoge

Apple Interfocing

Basic

Business

Softwere

BASIC Programmer's Notebook

Cirdut

Design

Programs

Ihe Apple

Circu

Desig" Program.

for Ihe

TRS·BO

Computer

Auisl~

Home Energy

Management

Design of

Active

Filters.

With

bperimenh

Design of Op-Amp Circuils,

With

Experiments

Design of Phose·Locked Loop

Circuits,

With

hperimenh

De sign of Transistor

Circuits, With

Experim

8080/8085 Software

Design

Volumes)

BOBSA

Cookbook

Electronic Music Circuih

555

Timer Applications Sourcebook, With bperimenh

Guide to

CMOS

Basics,

Circuilt,

bperimenh

Ho ..... to

Program

and Interface

6BOO

Introduction

Electronic

Speech Synthesis

Introduction

FORTH

Microcomputer-Analog

Converter Software

and Hard

..... ore

Interfacing

Microcomputer Dato·Bose

Management

Microcomputer Cesign and

Maintenance

Microcomputer

Interfacing

With

the

8255

PPI

Chip

NCR Basic

Electronics

Course, With

Experime nts

NCR

EDP

Concepts

Course

PET Interfacing

Programming and

Interfacing

the

6502,

With Experiments

Real

Time

Control With the

TRS·80

16·Bi!

Microprocenors

6502

Software

Design

6BOI,

68701, and

6803 Microcomputer

Programming

and

Interfaci ng

The

6BOoo:

Principles and

Programming

6B09 Microcomputer

Programming

Interfacing,

ith

Experiments

STC Bus Interfacing

TEA: An 8080/ B08S Co·Resident

Editor/

Assembler

TRS·SO Assembly

Lan

guage

Mode Simple

TRS·SO Color Computer In'ertocing

TRS·BO Interfacing

Volumes)

TRS·SO More

Than BASIC

•

In most

coses,

these

booles provide both text

material and

uperiments,

.....

hich

permit

demons'rote ond

explore

the

ncepts

that

are

covered

the book

ese

books remain among

e very

few

tho' provide step·by·step

instructions

concerning how to

learn basic

electronic can·

cepts, wire aCluo

circuits, lesl microcomputer

inte rfaces,

and program

compute rs

based on popu·

lor

"licroprocessor chips. We

have found

that

the booles

are

very

useful

to the electronic novice

.....

de)ires

join

the

electroniu

revolution," with minimum time

and

effort.

Jonathon

Titus,

Christopher A.

Titus, and David G. larsen

The Blacksburg

Group"

Bug

symbol

trademark Nano"a",

Inc.,

Blacksburg,

24060

Programming

Interfacing the 6502,

With Experi ments

Marvin L. De Jong

Howard W. Sams

Co., Inc.

4300 WEST 62ND ST. INDIANAPOLIS. INDIANA 46268 USA

1980 by Marvin

De Jong

FIRST EDITION

FIFTH PRINTING-1983

part of this book shall be

reproduced, stored in a retrieval system, or transmitted

by any nwans, electronic, mechanical, photocopying,

recording, or otherwise, without written permission

from the publisher.

:\0

patent liability is assumed with

respect to the use of the information contained herein.

While every precaution has been taken in the

preparation of this book, the publisher assumes no

responsibility for errors or omissions. Neither is any

liability assumed for damages resulting from the use of

the information contained herein.

International Standard Book Number: 0-672-21651-5

Library of Congress Catalog Card Number: 79-67130

Printed

the United States of America.

Preface

is interesting that most of us have a completely different feel-

ing toward learning something that involves a physical skill than

the feeling we haye when we approach an intellectual challenge. I

have observed people trying to learn to water ski, for example, en-

during failure after failure before finally coming up out of the

water to experience the exhilaration of a successful first run. The

entire process seems to provoke very little frustration or aggravation.

On the other hand, the world is full of books that purport to make

learning something easy, and most of us are easily frustrated and

angered when we cannot understand something involving our

intellects the very first time we try. Perhaps we are too vain, but

think the real problem is our unrealistic attitude toward learning.

All of this leads up to my hope that you will not give up easily

if you want to learn to program the

6502.

Be patient with vourself,

and try to see if you can enjoy the process as much as the product.

Although

have made a serious attempt to explain concepts so that

newcomers to the field of

6502

assembly language programming can

easily understand them, no one can subtract from the efforts (and

enjoyment) required of the student. This is not a novel.

is a chal-

lenge to you, the reader, to see if you can acquire a new and exciting

skill.

Moreover, I would like to emphasize the importance of obtaining

"hands-on" experience. Current theories of learning emphasize the

importance of concrete experiences before the ability to think ab-

stractly is acquired. This is the principal reason for including ex-

periments in the book. The experiments, or demonstrations, as many

might more properly be called, are intended to give you the prac-

tice and concrete experiences required for the challenge of writing

your own microcomputer programs, a task that requires abstract

thinking.

MARVI~

DE JOXG

This book

dedicated to technology that

compatihle u:ith nature.

Programming_and_Interfacing_6502_with_Experiments.pdf

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