Compute's_Data_File_Handler_for_the_Commodore_64.pdf

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COMPUTE'S
DATA
FILE
HANDLER
for the Commodore 64
Blaine D. Standage
John L. Darling
Kenneth D. Standage
COMPUTE!"Publicationsjnc^
OneoftheABCPublishingCompanies
^^
Greensboro,NorthCarolina
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Copyright 1985, COMPUTE! Publications, Inc. All rights reserved
Reproduction or translation of any part of this work beyond that permitted by
Sections 107 and 108 of the United States Copyright Act without the permission of
the copyright owner is unlawful.
Printed in the United States of America
ISBN 0-942386-86-8
10 98765432
COMPUTE! Publications, Inc., Post Office Box 5406, Greensboro, NC 27403, (919)
275-9809, is one of the ABC Publishing Companies and is not associated with any
manufacturer of personal computers. Commodore 64, PET, and CBM are trademarks
of Commodore Electronics Limited and/or Commodore Business Machines, Inc.
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Contents
Foreword
v
Author's Preface
vii
1: Getting Started with DFH
1
Introduction to DFH
3
Simplified Operation
8
Data File Structures
13
Error Sources and Handling
19
2: Operating DFH
25
The Bootstrap
27
Create, Edit, Sort, and List
29
Printing
40
3: File Manipulation
51
Merging Files
53
Restructuring Files
60
Split and Extract
66
4: The DFH Editor
75
A Sequential File Editor
77
Using the Editor
83
5: Disk Use
93
Disk Support Commands
95
DOS Shorthand Commands
97
6: DFH Applications Examples
Ill
Why Samples?
113
A Magazine Cardfile System
114
A Genealogy File
121
7: File Conversion
129
Converting Non-DFH Files
131
8: The ML Subroutines
145
The Subroutine Package
147
Subroutine Examples
155
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