Sonic Jam (Sega Saturn)/RAM map

The following article is a RAM map for Sonic Jam (Sega Saturn).

This article is a work in progress. ...Well, all the articles here are, in a way. But this one moreso, and the article may contain incomplete information and editor's notes.

To do: Sonic 2, Sonic 3/K

RAM Map

HRAM

Sonic World

Address    Size    Description
------     ----    -----------
0FFF19        3    Rings

Sonic the Hedgehog 1

Address    Size    Description
------     ----    -----------
0FD01A        1    Sonic's current animation frame
                   * 00 - Nothing
                   * 01 - Standing
                   * 02 - Idle start
                   * 03-04 - Idle loop frames
                   * 05 - Look up
                   * 06-0B - Walking frames
                   * 0C-11 - Walking frames (45 degrees)
                   * 12-17 - Walking frames (90 degrees)
                   * 18-1D - Walking frames (135 degrees)
                   * 1E-21 - Running frames
                   * 22-25 - Running frames (45 degrees)
                   * 26-29 - Running frames (90 degrees)
                   * 2A-2D - Running frames (135 degrees)
                   * 2E-32 - Jumping/rolling frames
                   * 33-36 - Unused stretched rolling frames
                   * 37-38 - Skidding frames
                   * 39 - Crouch
                   * 3A-3B - Ledge balance frames
                   * 3C-3E, 53-54 - Spinning frames
                   * 3F - Unused? alternate in the air pose
                   * 40 - Spring jump
                   * 41-42 - Hanging on frames
                   * 43-44 - Unused victory jump frames
                   * 45-48 - Pushing frames
                   * 49 - Unused sliding
                   * 4A - Unused breathing for air on the ground
                   * 4B - Unused gray death
                   * 4C - Drowning death
                   * 4D - Death
                   * 4E-52 - Unused shrinking frames
                   * 55, 57 - Hit/falling frames
                   * 56 - Breathing for air
                   * 58-5D - Spindash frames

                   Good ending
                   * 00-01 - Glowing hands frames
                   * 02 - Looking up
                   * 03-04 - Shock frames
                   * 05-07 - Ending jump frames

                   Continue screen
                   * 01-03 - Continue waiting frames
0FFE06        1    Current object (debug placement mode)
0FFE10        1    Current zone
                   * 00 - Green Hill
                   * 01 - Labyrinth
                   * 02 - Marble
                   * 03 - Star Light
                   * 04 - Spring Yard
                   * 05 - Scrap Brain/Final (act 3 is Final Zone)
                   * 06 - Unused (Glitchy ending cutscene, labeled "Zone")
0FFE11        1    Current act
                   * 00 - Act 1
                   * 01 - Act 2
                   * 02 - Act 3
                   * 03 - Act 4 (Only used for Scrap Brain Zone Act 3, which is treated as Labyrinth Zone Act 4 internally)
0FFE12        1    Lives
0FFE14        2    Oxygen underwater left
0FFE16        1    Current special stage (up to 05)
0FFE20        2    Rings
0FFE24        2    Time
0FFE2C        1    Shield flag
0FFE2D        1    Invincibility flag
0FFE2E        1    Speed shoes flag
0FFE56        1    Number of Choas Emeralds collected
0FFF83        1    Selection on level select menu