SCHG:Sonic & Knuckles Collection

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This is the Sonic Community Hacking Guide for Sonic & Knuckles Collection, the PC version of Sonic 3 & Knuckles.
All data except for music is identical to the Genesis version but byteswapped (order goes 1,0,3,2 instead of 0,1,2,3).

Level Data

Main Article: SCHG:Sonic 3 & Knuckles/Level Editing#Level Layout

Location	Level
259F34	Angel Island Zone Act 1
25A780	Angel Island Zone Act 2

These use the standard Genesis format and can be edited with any tile editor.

Start Address	End Address	Description
1302B	1374A	HUD Numbers, Debug Numbers
593DC	70A7B	Tails
70A7C	73B3B	Mini Sonic
73B3C	76E5B	Mini Tails
76E5C	7A2DB	Mini Knuckles
7A46C	7D28B	Sonic Surfing (Unused)
7E180	84A3F	Invincibility Stars, Puff of Smoke, Shields
95118	95AD7	CNZ Cannon
95AD8	96257	Drowning Countdown
96258	96757	SONIC/MILES BG
E7654	E7CB3	Some Knuckles Sprites
E91F4	EAD93	Butterdroid and Cluckoid
EC4D8	ECD43	Some Knuckles Sprites?
EE198	EF838	Hyudoro
F50F0	F776F	Knuckles from HPZ cutscene
100F78	101AB7	Knuckles from SSZ
117244	117CE3	Rhinobot
11D5DC	11DFFB	Bubbles
11EE54	11FF93	Clamer
1240A8	125087	Penguinator
127E28	129147	Flybot767
1313DC	1320DB	Signpost
132D40	137C1F	more Knuckles
137CF4	13A993	Big Ring
1A2EAC	1C2DCB	Sonic
1C2F8C	1E2D0B	Knuckles
1E2F0C	1E6BAB	Sonic Extra
1E6BAC	1E94CB	Tails Extra

Main Article: SCHG:Sonic 3 & Knuckles/RAM Editing

The RAM starts at 08FF0000.

Sonic Community Hacking Guide
General
Number Systems \| Sonic Music Hacking Guide \| Assembly Hacking Guide \| Subroutine Equivalency List \| 68000 Instruction Set \| SonED2 Manual \| 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 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 Jam 6 \| Sonic Advance \| Sonic Advance 2 \| Sonic Advance 3 \| Sonic Battle \| Sonic Adventure \| Sonic Adventure DX: PC \| Sonic Adventure 2 \| Shadow the Hedgehog
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)