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Propeller Programming Using Assembler, Spin, and C 无水印原版pdf
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Propeller
Programming
Using Assembler, Spin, and C
—
Sridhar Anandakrishnan

Propeller
Programming
Using Assembler, Spin, and C
Sridhar Anandakrishnan

Propeller Programming: Using Assembler, Spin, and C
ISBN-13 (pbk): 978-1-4842-3353-5 ISBN-13 (electronic): 978-1-4842-3354-2
https://doi.org/10.1007/978-1-4842-3354-2
Library of Congress Control Number: 2018935236
Copyright © 2018 by Sridhar Anandakrishnan
is work is subject to copyright. All rights are reserved by the Publisher, whether the whole or
part of the material is concerned, specically the rights of translation, reprinting, reuse of
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e use in this publication of trade names, trademarks, service marks, and similar terms, even if
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they are subject to proprietary rights.
While the advice and information in this book are believed to be true and accurate at the date of
publication, neither the authors nor the editors nor the publisher can accept any legal
responsibility for any errors or omissions that may be made. e publisher makes no warranty,
express or implied, with respect to the material contained herein.
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Cover photo: Double slip at Munich Central, 2005. Photo by Bjorn Laczay, license CC-BY-SA 2.0.
https://goo.gl/q7EHSv.
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For more detailed information, please visit www.apress.com/source-code.
Printed on acid-free paper
SridharAnandakrishnan
Department of Geosciences, University Park,
Pennsylvania, USA

iii
About the Author ���������������������������������������������������������������������������������xi
Acknowledgments �����������������������������������������������������������������������������xiii
Preface �����������������������������������������������������������������������������������������������xv
Table of Contents
Part I: Introduction ����������������������������������������������������������������������1
Chapter 1: Introduction�������������������������������������������������������������������������3
1.1 The Propeller Eight- Cog Processor .................................................................5
1.1.1 Cogs ........................................................................................................6
1.1.2 Hubs andCogs........................................................................................9
1.2 Memory Layout .............................................................................................11
1.2.1 Hub Memory ......................................................................................... 13
1.2.2 Cog Memory .........................................................................................14
1.3 Layout ofThis Book .......................................................................................16
Chapter 2: Steim Compression �����������������������������������������������������������17
2.1 Packing andCompressing Data ....................................................................18
2.2 Specication .................................................................................................21
2.3 Implementation ............................................................................................. 23
Chapter 3: Introduction toSpin ����������������������������������������������������������25
3.1 Negative Numbers ........................................................................................28
3.2 Memory Layout .............................................................................................29

iv
3.3 Spin Template ...............................................................................................30
3.3.1 Hello, World ...........................................................................................30
3.3.2 Running theProgram............................................................................35
3.4 PASM Template .............................................................................................37
3.5 Template forPASM Code inaSeparate File .................................................. 40
3.6 Summary.......................................................................................................43
Chapter 4: Test-Driven Development ��������������������������������������������������45
4.1 TDD Spin Code ..............................................................................................49
4.2 Summary.......................................................................................................51
Chapter 5: Compression in Spin ���������������������������������������������������������53
5.1 Structure oftheProject .................................................................................53
5.2 Goals ofThis Chapter .................................................................................... 54
5.3 First Iteration .................................................................................................55
5.4 Passing Arrays toMethods ...........................................................................61
5.5 Testing ...........................................................................................................62
5.6 Final Code .....................................................................................................64
5.6.1 Compression inSpin .............................................................................64
5.6.2 Decompression inSpin .........................................................................66
5.7 The Need forSpeed .......................................................................................70
5.7.1 Timing inPASM .....................................................................................71
5.7.2 PASM Timing Estimate ..........................................................................72
5.8 Summary.......................................................................................................73
Part II: Spin and PASM ���������������������������������������������������������������������75
Chapter 6: Propeller Assembler: PASM ����������������������������������������������77
6.1 Instructions inPASM ..................................................................................... 78
6.1.1 The Add Instruction ...............................................................................81
6.1.2 The mov Instruction .............................................................................. 82
Table of ConTenTsTable of ConTenTs
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