Chapter 6 The Super Game Boy System - Nintendo GAME BOY Programming Manual

CHAPTER 6: THE SUPER GAME BOY SYSTEM.................................138
1. OVERVIEW ....................................................................................138
1.1 What is Super Game Boy?..................................................................... 138
1.2 Block Diagram ........................................................................................ 139
1.3 Functions ................................................................................................ 139
1.4 System Program ..................................................................................... 140
2. SENDING COMMANDS AND DATA TO SUPER NES .................141
2.1 System Commands ................................................................................ 141
2.2 Data Transfer Using an Image Signal ................................................... 144
3. SYSTEM COMMANDS ..................................................................145
3.1 System Command Summary ................................................................. 145
3.2 System Command Details ..................................................................... 146
3.3 Cautions Regarding Sending Commands ............................................ 174
3.4 Sound Flag Summary............................................................................. 174
4. MISCELLANEOUS.......................................................................181
4.1 Reading Input from Multiple Controllers .............................................. 181
4.2 Recognizing SGB ................................................................................... 181
4.3 SGB Register Summary ......................................................................... 183
4.4 Flowchart of Initial Settings Routine .................................................... 185
5. PROGRAMMING CAUTIONS.......................................................186
5.1 ROM Registration Data .......................................................................... 186
5.2 Initial Data ............................................................................................... 186
5.3 SOU_TRN default data ........................................................................... 186
Chapter 6: The Super Game Boy System
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