The Advanced Machine Language Book for the Commodore 64, C-64 PDF
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1HEADMNCED
MACHINELANGUAGE
BOOK FORTHE
COMMODORE-64
by LotharEnglisch
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THE ADVANCED
MACHINE LANGUAGE BOOK
FOR THE COMMODORE 64
BY: Lothar Englisch
A DATA BECKER BOOK
AbacusHiSoftware
P.O. BOX 7211 GRAND RAPIDS,MICH. 49510
First English Edition, September 1984
Printed in U.S.A.
Copyright (C)1984 Data Becker GmgH
Merowingerstr. 30
4000 Dusseldorf W.Germany
Copyright (C)1984 Abacus Software, Inc.
P.O. Box 7211
Grand Rapids, MI 49510
This book is copyrighted. No part of this publication may
be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic,
mechanical or otherwise, without the prior written
permission of DATA BECKER or ABACUS Software.
ISBN 0-916439-06-2
Table of Contents
Introduction
1
SECTION 1 Numbers and Arithmetic
1.1 Number representation on the Commodore 64
2
1.2 Conversion to floating-point format
22
1.3 Conversion to integer format
28
1.4 BASIC math routines
* 30
1.5 BASIC floating-point routines
44
SECTION 2 Interrupts
2.1 Interrupt programming
69
2.2 The CIA 6526
....74
2.3 Using the system interrupt
...80
2.4 Video controller interrupts
102
2.5 CIA 6526 interrupts
110
2.6 Using the timer
116
SECTION 3 Beyond BASIC
3.1 Kernal and BASIC extensions
131
3.2 The BASIC vectors
134
3. 3 Structured programming
147
3.4 Using new keywords
160
3.5 The operating system vectors
182
3.6 Printer spooling
197
3.7 Table of BASIC keywords and tokens
209
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