Nintendo Game Boy Link Cable Betriebsanleitung
DMG-06-4216-001-B
Released 12/03/1999
PROGRAMMING MANUAL
Version 1.1
“Confidential”
This document contains confidential and proprietary information of
Nintendo and is also protected under the copyright laws of the United
States and foreign countries. No part of this document may be released,
distributed, transmitted or reproduced in any form or by any electronic
or mechanical means, including information storage and retrieval
systems, without permission in writing from Nintendo.
1999, 2000 Nintendo of America Inc.
TM and are trademarks of Nintendo
Introduction
3
INTRODUCTION
This manual is a combination and reorganization of the information presented in the Game Boy Development
Manual, revision G, and the Game Boy Color User's Guide, version 1.3. In addition, it incorporates all information
related to Game Boy programming, including programming for Super Game Boy and the Game Boy Pocket
Printer.
The abbreviations used in this manual represent the following:
DMG: Game Boy (monochrome), introduced on April 21, 1989
MGB: Game Boy Pocket (monochrome), introduced on July 21, 1996
MGL: Game Boy Light (monochrome), introduced on April 14, 1998
CGB: Game Boy Color (color), introduced on October 21, 1998
Note: Where it is not necessary to distinguish between the different monochrome
models, DMG is used to refer to both monochrome models, and CGB is used to
denote the Color Game Boy.Only whereit is necessaryto distinguishbetween
the monochrome models is MGB used to denote Game Boy and MGL used to
denote Game Boy Light.
SGB: Super Game Boy, introduced on June 14, 1994
SGB2: Super Game Boy 2, introduced on January 30, 1998
Note: SGB is used to denote both SGB and SGB2 when no distinction is necessary.
SGB2 is used only in cases where distinction is necessary.
Game Boy Programming Manual
4
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Preface: To Publishers
5
PREFACE: TO PUBLISHERS
NINTENDO GAME BOY COLOR SOFTWARE PRE-APPROVAL
REQUIREMENTS
Prior to submitting your CGB software to Lot Check for approval, it is required that you submit it to the Licensee
Product Support Group for pre-approval. To assist us with the evaluation of your CGB software and/or product
proposal(s), please refer to the following requirements when submitting materials* for approval.
* Please do not send original artwork or materials, as they will not be returned.
CGB software and/or product proposals are evaluated based on the following criteria:
•Use of Color
To ensure that the expectations of the Game Boy Color consumer are met, Mario Club will evaluate the use
of color in all CGB games (dual or dedicated) using the following criteria:
◊Differentiation - If a game is to be considered CGB-compatible, then it must appear significantly more
colorful than a monochrome Game Boy game when “colorized” by the CGB hardware. The principal
measure of this is the number of colors in the background (BG) and the number of colors in the objects
(OBJ).
◊Simultaneous Colors - Because CGB hardware automatically “colorizes” monochrome games with up
to four colors in the BG palette and up to six colors for two OBJ palettes (three colors per palette), a
game typically must display more colors than this automatic “colorization” to be considered a CGB
game.
◊Appropriate use of Color - Objects in the game that are based on reality (trees, rocks, animals, and
so on) should be a color that we would normally associate with them. For fictional objects, colors
should be chosen to show appropriate detail and, when needed, to differentiate unlike objects.
◊Variety of Colors - The CGB is capable of producing a wide range of colors (32,768 to be exact --
albeit not all at the same time). A CGB game should use this capability of the hardware to yield
distinctly different colors for objects, characters, areas, and so on.
◊Contrast & Saturation - Two of the elements that make a game look colorful are high contrast and
“saturated” or vibrant colors. Pastel colors on a white background will not seem nearly as colorful as
the same colors on a dark background. Not every game can use a dark background, but the intensity
of the colors should still be maximized as much as possible.
Please detail or demonstrate how your game will utilize color capabilities of the CGB. Use whatever means
will best allow you to do so, such as artists renderings, programmed demos, ROM images, written
descriptions, and so on.
Game Boy Programming Manual
6
•
Game Concept Content
We do not require an explanation of, or evaluate game concept content for original CGB titles. However, if
you are planning to “colorize” a previously released monochrome game we require that it include game-play
enhancements (beyond simply adding color) to differentiate it from its monochrome counterpart. Such
game-play enhancements may include, but are not limited to: additional stages, levels, or areas; new
characters; additional items; game-play based on color; and so on. These enhancements must be readily
apparent to players familiar with the original monochrome game.
Please submit a written proposal of the enhancements to us for pre-approval. Use whatever additional
means that will best allow you to communicate the game-play enhancements, such as storyboards,
treatments, videotapes, programmed demos, and so on.
•Interim ROM Submissions
We require at least one interim ROM submission to Mario Club (at approximately 50% completion) for
preliminary review of the use of color in every CGB game. By reviewing the interim ROM and providing you
with feedback in the early stages, we also help ensure that your projects stay on schedule. Final pre-
approval is based on Mario Club’s evaluation of a ROM near completion of game development.
If you wish to arrange electronic transfer of the ROMimage, please contact Terral Dunn in our Testing
and Engineering department at (425) 861-2670 or by e-mail at “Terraldu@noa.nintendo.com”. Please notify
him when you have made an electronic submission for our review.
•
Proposed Developer
Please supply us with the name, addressand phone number of the proposed developer. If the developer is
not an Authorized Nintendo CGB Developer, please contact Melody Morgan at “melomo01@noa.nintendo.com”or
425-861-2618, and she will provide you with the application information.
•Schedule Information
Please provide us with an estimated product schedule, including interim ROM submission(s), final Mario
Club submission, submission of the master ROM to Lot Check, and the release date.
•Game Pak Configuration & Game Type
Please provide us with the estimated Game Pak size in Megabits (Mb) and the RAM size if internal memory
is to be used to save game information. Also state whether the game will be compatible with the
monochrome Game Boy hardware or if it is dedicated to CGB hardware. For the current Game Pak prices
and configurations available, please contact Nintendo’s Licensing Department.
You will be contacted with the evaluation results when the Licensee Product Support Group has completed its
evaluation of your ROM or concept submission.
Table of Contents
7
Table of Contents
Page Number
Introduction.......................................................................................... 3
Preface: To Publishers......................................................................... 5
Chapter 1 System................................................................................. 9
Chapter 2 Display Functions............................................................. 47
Chapter 3 Sound Functions............................................................... 77
Chapter 4 CPU Instruction Set .......................................................... 93
Chapter 5 Miscellaneous General Information............................... 125
Chapter 6 The Super Game Boy System........................................ 137
Chapter 7 Super Game Boy Sound................................................. 187
Chapter 8 Game Boy Memory Controllers(MBC) ........................... 215
Chapter 9 Pocket Printer.................................................................. 235
Appendix 1 Programming Cautions................................................ 253
Appendix 2 Register and Instruction Set Summaries.................... 267
Appendix 3 Software Submission Requirements .......................... 285
Game Boy Programming Manual
8
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Chapter 1: System
9
CHAPTER 1: SYSTEM..............................................................11
Revision History…………………………………………………………….10
1. GENERAL SYSTEM ......................................................................11
1.1 System Overview.....................................................................................11
1.2 Game Boy Block Diagram.......................................................................13
1.3 Memory Configuration.............................................................................14
1.4 Memory Map.............................................................................................15
1.5 Feature Comparison................................................................................16
1.6 Register Comparison...............................................................................17
2. CPU................................................................................................18
2.1 Overview of CPU Features......................................................................18
2.2 CPU Block Diagram.................................................................................20
2.3 Description of CPU Functions................................................................22
2.4 CPU Functions (Common to DMG/CGB
➀
➀➀
➀
).............................................24
2.5 CPU Functions (Common to DMG/CBG
➁
➁➁
➁
).............................................28
2.6 CPU Functions (CGB only)......................................................................34
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