High Work RAM
Overview
Here are some places of interest in High Work RAM.
| Address |
Description
|
| $4A7BC |
A list of Sonic's model component footer addresses.
|
| $4D9CC |
A list of addresses that each point to the jump table for an animation.
|
| $4DBAC |
A few addresses that point to Sonic's 3 models, and some parameters(?).
|
| $5EF34 |
An object table of some sort.
|
| $65F7C |
Animation Data. Matches up starting at $25F7C in MUSEUM.MUS.
|
| $7F908 |
Model Data. Matches up starting at $3F908 in MUSEUM.MUS.
|
| $D0000 |
Object Memory.
|
| $DA000 |
Texture Definitions. Matches up starting at $250A4 in MUSEUM.MUS.
|
| $DD000 |
Dynamic list of addresses, likely things to copy to VDP1.
|
| $E3000 |
2D Vertex coordinates for VDP1?
|
| $E7000 |
Corresponds to $00000 in VDP1 VRAM.
|
| $F4B00 |
Stuff regarding the 3D Pad.
|
| $F5420 |
Animation attributes for Sonic.
|
| $F5DC0 |
Animation attributes for Tails.
|
| $FF8FC |
Things regarding I/O; Controller info, and bit flags affecting the screen.
|
Object Memory Map
Camera
| Address |
Type |
Description
|
| $D0000 |
Long |
Pointer to Tails' object
|
| $D0004 |
Long |
Pointer to the stack?
|
| $D000C |
Long |
Pointer to subroutine?
|
| $D0014 |
Word |
Y-axis Rotational Velocity. Clockwise (clock face upwards) is positive.
|
| $D0018 |
Long |
Distance from Target
|
| $D0020 |
Long |
Maintained Vertical Offset
|
| $D0028 |
Euler Rotation |
Rotation
|
| $D0030 |
3D Vector |
Target's Position
|
| $D0040 |
3D Vector |
Position
|
Sonic
| Address |
Type |
Description
|
| $D0060 |
Long |
Pointer to Tails' Object
|
| $D0064 |
Long |
Pointer to the stack?
|
| $D006C |
Long |
Pointer to subroutine?
|
| $D0078 |
Long |
Pointer to Animation Attributes
|
| $D007D |
Byte |
Unknown. Seems to affect Sonic's lighting.
|
| $D007E |
Byte |
Unknown. Altering will crash the game.
|
| $D0080 |
Long |
Pointer. Unknown.
|
| $D0084 |
Long |
Pointer. Unknown.
|
| $D0088 |
Euler Rotation |
Rotation.
|
| $D008E |
Word |
Unknown. Affects Sonic's lighting.
|
| $D0090 |
3D Vector |
Velocity. Relative to direction, with X being forward.
|
| $D009C |
Long |
Scale. Works like a 3D Vector component. Messes with his lighting when not 1.0.
|
| $D00A0 |
3D Vector |
Position.
|
| $D00B0 |
Long |
Pointer. Unknown.
|
Tails
| Address |
Type |
Description
|
| $D0180 |
Long |
Pointer to another object
|
| $D0184 |
Long |
Pointer to Sonic's Object
|
| $D018C |
Long |
Pointer to subroutine?
|
| $D0198 |
Long |
Pointer to Animation Attributes
|
| $D019D |
Byte |
Unknown. Seems to affect Tails' lighting.
|
| $D019E |
Byte |
Unknown. Altering will crash the game.
|
| $D01A0 |
Long |
Pointer. Unknown.
|
| $D01A4 |
Long |
Pointer. Unknown.
|
| $D01A8 |
Euler Rotation |
Rotation.
|
| $D01AE |
Word |
Unknown. Affects Tails' lighting.
|
| $D01BC |
Long |
Scale. Works like a 3D Vector component. Messes with his lighting when not 1.0.
|
| $D01C0 |
3D Vector |
Position.
|
| $D01D0 |
Long |
Pointer. Unknown.
|
| $D01D8 |
Long |
Pointer. Perhaps to the path he follows?
|
| $D01DC |
Long |
Progress along the path. Ranges from $0 to $18FFFFF.
|
SCSP RAM
Overview
| Address |
Description
|
| $00000 |
Unknown
|
| $0B000 |
Start of correspondence with SWORLD.SND
|
| $3A653 |
End of correspondence with SWORLD.SND
|
