Compute's_Machine_Language_Routines_for_the_Commodore_64.pdf

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COMPUTEi's
Machine
Language
Routines
for the
Commodor©
64
i! Publicationsjnc©
OneoftheABCPublishingCompanies
^^
H Greensboro, North Carolina
Commodore 64 is a trademark of Commodore Electronics Limited.
670545902.004.png
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Thefollowingarticleswereoriginallypublished inCOMPUTE!magazine, copyright 1983,
COMPUTE! Publications, Inc.: "64 Escape Key" (August — originally titled "VIC and 64
Escape Key"); "Ultrasort" (September — originally titled "Ultrasort for Commodore");
"Variable Lister" (November).
Thefollowingarticlewas originally published in COMPUTE/magazine, copyright 1984,
COMPUTE! Publications, Inc.: "Dr. Video 64" (February).
The following articles were originallypublished in COMPUTE/'sGazette, copyright 1983,
COMPUTE! Publications, Inc.: "The Four-Speed Brake" (August); "RAMtest" (August —
originally titled "Machine LanguageforBeginners: The Easy Way"); "Disassembling"
(September — originally titled "Machine Language for Beginners: Disassembling"); "64
Searcher" (September); "64 PaddleReader" (October—originallytitled "ImprovedPaddle
ReaderRoutine"); "WindowsandPages"(October—originallytitled"MachineLanguagefor
Beginners: Windows andPages"); "DiskDefaulter" (November—originallytitled "VIC/64
Disk Defaulter"); "One-Touch Commands" (November — originally titled "One-Touch
Commandsforthe64"); "TheAssembler"(November—originallytitled"MachineLanguage
for Beginners:TheAssembler"); "FoolproofINPUT"(December—originallytitled"Foolproof
INPUT for VIC and 64").
Thefollowing articles were originallypublished in COMPUTE!'sGazette, copyright 1984,
COMPUTE! Publications, Inc.: "Auto Line Numbering" (February); "ASCII/POKE Printer"
(March—originallytitled"ASCII/POKEPrinterforVICand64")-, "NumericKeypad"(April);
"StepLister"(May); "Scroll64"(June); "Ultrafont +"(July); "SpriteMagic"(August); "String
Search" (August).
ThefollowingarticlewasoriginallypublishedinCOMPUTE!sFirstBookofCommodore64
Games, copyright 1983, COMPUTE! Publications, Inc.: "Maze Generator."
ThefollowingprogramwasoriginallypublishedinCreatingArcadeGamesontheCommodore
64, copyright 1984, COMPUTE! Publications, Inc.: "Two-SpriteJoystick."
Copyright1984,COMPUTE!Publications,Inc.Allrightsreserved.
It
Reproductionortranslationofanypartofthisworkbeyondthatpermittedby Sections 107
and 108oftheUnitedStatesCopyrightActwithoutthepermissionofthecopyrightowner
—
isunlawful.
j
Printed in the United States ofAmerica
ISBN0-942386-48-5
1 J
COMPUTE!Publications,Inc.,PostOfficeBox5406,Greensboro,NC27403(919)275-9809,
isoneoftheABCPublishingCompaniesandisnotassociatedwithanymanufacturerof
personalcomputers.Commodore64isatrademarkofCommodoreElectronicsLimited. \ J
ii
Q
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n Contents
! Foreword
vii
Chapter 1: Introduction
1
Another Toolbox
Gregg Peek
3
The Assembler
Richard Mansfield
6
Disassembling
Richard Mansfield
14
Windows and Pages
Richard Mansfield
21
Stealing Characters from ROM
J.R. Chaffer
26
Chapter 2: Programming Aids
43
BASIC Aid
Brent Anderson and Sheldon Leemon
45
Auto Line Numbering
JeffYoung
69
Numeric Keypad
Charles Kluepfel
71
One-Touch Commands
David W. Martin
74
Dr. Video
David W. Martin
78
Step Lister
—
EA. Cottrell
.. 80
I ! FoolproofINPUT
Charles Brannon
83
P-
64 Searcher
j I
John Krause and David W. Martin
87
The Four-Speed Brake
—
Dan Carmichael
89
i I ASCII/POKE Printer
Todd Heimarck
91
— 64 Escape Key
i I Thomas Henry
97
,—,
iii
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