Commodore_128_Programming_Secrets.pdf

OsborneMcGrawHill

William M.Wiese.Jr.

Commodore 128™

Programming Secrets

William M. Wiese, Jr.

Osborne McGraw-Hill

Berkeley, California

Osborne McGraw-Hill

2600 Tenth Street

Berkeley, California 94710

U.S.A.

ForinformationontranslationsandbookdistributorsoutsideoftheU.S.A.,

please write to Osborne McGraw-Hill at the above address.

C-64 and C-128 are trademarks of Commodore Business Machines, Inc.

Commodore 128 ProgrammingSecrets is not sponsored orapproved by or

connectedwithCommodoreBusinessMachines,Inc. CommodoreBusiness

Machines, Inc., makes no warranty, expressed orimplied, ofany kind with

regardtotheinformationcontainedherein,itsaccuracy,oritscompleteness.

A complete list oftrademarks appears on page viii.

Portionsofthisbookadaptedwithpermissionfrom YourCommodore64by

John Heilborn and Ran Talbott (Berkeley: Osborne McGraw-Hill, 1986)

and Your Commodore 128 byJohn Heilborn(Berkeley: OsborneMcGraw-

Hill, 1986).

Commodore 1 88™ Progremming Secrete

StatesofAmerica. ExceptaspermittedundertheCopyrightActof1976, no

part ofthispublication maybe reproduced or distributedin anyform or by

any means, or stored in a database or retrieval system, without the prior

written permission of the publisher, with the exception that the program

listingsmaybeentered,stored, andexecutedinacomputersystem,butthey

may not be reproduced for publication.

1234567890 DODO 89876

ISBN 0-07-881250-X

Jon Erickson, Acquisitions Editor

Greg Berlin, Technical Reviewer

Lyn Cordell, Project Editor

Contents

I The Commodore 1 SB's C-64 Mode

1 Inside C-64 Mode

C-64 Mode Selection 3

Initial RAM Bank Selection 4

Other Differences in the C-64 System Map 5

Disk Compatibility Problems: 1541 Versus 1571 II

A C-64 Bibliography

II C-1 SB "Native" Mode

8 C-1 SB Architecture end

Memory Management

What's Where in the C-128

The Banking Concept

The C-128 MMU

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