S1Howtos

SCHG How-To Guide: Sonic the Hedgehog (16-bit)
Fixing Bugs
Fix Demo Playback \| Fix a Race Condition with Pattern Load Cues \| Fix the SEGA Sound \| Display the Press Start Button Text \| Fix the Level Select Menu \| Fix the Hidden Points Bug \| Fix Accidental Deletion of Scattered Rings \| Fix the Walk-Jump Bug \| Correct Drowning Bugs \| Fix the death boundary bug
Design Choices and Features
Change Spike Behavior \| Fix Special Stage Jumping Physics \| Improve the fade in\fade out progression routines in Sonic 1 \| Remove the Speed Cap \| Add Spin Dash ( Part 1 / Part 2 / Part 3 / Part 4) \| Port the REV01 Background Effects \| Retain Rings Between Acts \| Fix scattered rings' underwater physics
Sound Features
Expand Music Index From $94 to $9F \| Extend Music Slots \| Play Different Songs Per Act \| Expand Music Index to Start at $00 \| Port Sonic 2 Final Sound Driver \| Port Sonic 3's Sound Driver
Extending the Game
Load chunks from ROM \| Add Extra Characters \| Make an Alternative Title Screen \| Use Dynamic Tilesets \| Make GHZ Load Alternate Art \| Add a New Zone \| Set Up the Goggle Monitor \| Add New Moves \| Add a Dynamic Collision System \| Extend Sprite Mappings and Art Limit \| Add Eggman Monitor \| Sonic 2 (Simon Wai Prototype) Level Select \| Enigma Credits
Split Disassembly Guides
Set up a Split Disassembly \| Basic Level Editing \| Basic Art Editing \| Basic ASM Editing (Spin Dash)