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Sonic CD/RAM Editing

From Sonic Retro

SCHG: Sonic CD
Main Article
File Locations
File Locations
Art Editing
Editing Art
Nemesis Format Art
MMDs, A-P
Palmtree Panic MMDs
Collision Chaos MMDs
Tidal Tempest MMDs
Quartz Quadrant MMDs
Wacky Workbench MMDs
Stardust Speedway MMDs
Metallic Madness MMDs
MMDs, S-W
MMD Tweaking
Tweaking MMDs
Maximum rings allowed
Minimum rings for Giant Ring
Rings given by ring
Rings given by Ring Monitor
Invincibility duration
Super Sneakers duration
Regular speed stats
Super Sneakers speed stats
RAM Editing
RAM Editing

Main System Memory Locations

This is a map of 68k memory as used by the main gameplay engine. For the most part, the memory locations in Sonic CD are the same as they are in the Genesis Sonic games. The following are mainly memory locations specific to Sonic CD. Note that any numbers entered (for example, score or number of rings) will have to be converted to hex first.

These are the offsets in RAM.

RAM offset Description
$1512 Ring Counter
$1516 Timer
$151A Score
$152E Time Period. 00 is past, 01 is present, 02 is future
$1548 - $154B X and Y location when time traveling. Used to determine where you spawn.
$156A Good future flag.
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Legacy Guides
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ROM: Sonic 1 | Sonic 2 | Sonic 2 Beta | Sonic 3

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

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Move to Sega Retro
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