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SCHG:Sonic the Hedgehog

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SCHG: Sonic the Hedgehog
Main Article
Art Editing
Editing Art
Uncompressed Art
Nemesis Format Art
Kosinski Format Art
Palette Editing
Object Editing
Editing Objects
Object Pointer List
Mappings Editing
Level Editing
Editing Levels
Object Placement
Level Layout
16x16 Block Mappings
256x256 Block Mappings
Text Editing
Editing Text
Level Select Menu
Level Title Cards
Title Card Configuration
Credits and Presentation Screen
Music Editing
Editing Music
Pointer Format
Header Format
DAC Samples
Note Editing
Misc. Editing
Editing other things
Level Order Format
Start Positions
Playlist Format
RAM Editing
Editing RAM
Main System Memory Locations
Object Status Table Format

This is the Sonic Community Hacking Guide for Sonic the Hedgehog. Originally based on Nemesis and saxman's guides, this document has grown to outclass those two documents in most ways, and is now preferred over the original guides (which were written three or four years ago with limited knowledge of the game's code). This is due to the updating of those documents to give them a living, breathing nature.

Contributors

(In alphabetical order; if you are a contributor and have worked on a specific part of the guide, feel free to note that.)



Sonic Community Hacking Guide
General
Number Systems | Sonic Music Hacking Guide | Assembly Hacking Guide | Subroutine Equivalency List | 68000 Instruction Set | SonED2 Manual | 68000 ASM-to-Hex Code Reference | VDP Documentation | Official Sega 32X Documentation | Official Sega CD Documentation | Official Sega Genesis Documentation
Game-Specific
Sonic the Hedgehog (16-bit) | Sonic the Hedgehog (8-bit) | Sonic Eraser | Sonic CD (prototype 510) | Sonic CD | Sonic CD (PC) | Sonic 2 (Nick Arcade prototype) | Sonic 2 (Simon Wai prototype) | Sonic 2 (16-bit) | Sonic 2 (8-bit) | Sonic 2 & Knuckles | Dr. Robotnik's Mean Bean Machine | Sonic Triple Trouble | Sonic 3 | Sonic & Knuckles | Sonic 3 & Knuckles | Sonic & Knuckles Collection | Sonic Crackers | Sonic 3D: Flickies' Island | Knuckles' Chaotix | Sonic R PC | Sonic Jam 6 | Sonic Advance | Sonic Advance 2 | Sonic Advance 3 | Sonic Battle | Sonic Adventure | Sonic Adventure DX | Sonic Adventure DX: PC | Sonic Adventure (2010) | Sonic Adventure 2 | Sonic Adventure 2: Battle | Sonic Heroes | Shadow the Hedgehog | Sonic & SEGA All-Stars Racing | Sonic Unleashed (XBOX 360/PS3) | Sonic Generations
The Nemesis Hacking Guides
ROM: Sonic 1 | Sonic 2 | Sonic 2 Beta | Sonic 3

Savestate: Sonic 1 | Sonic 2 Beta/Final | Sonic 3

The Esrael Hacking Guides
Sonic 1 (English / Portuguese) | Sonic 2 Beta (English / Portuguese) | Sonic 2 and Knuckles (English / Portuguese)