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Teenage Mutant Ninja Turtles (NES)/RAM map: Difference between revisions
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Revision as of 02:42, 24 January 2024
The following article is a RAM map for Teenage Mutant Ninja Turtles (NES).
| RAM Address | Description |
|---|---|
| $0000 - $0017 | Temp/Scratch memory |
| $0019 | Temp X Register Backup |
| $001a | Temp Y Register Backup |
| $001b | Current Game State ID |
| $001c | Substate ID of Current Game State |
| $001e | Global Timer |
| $001f | NMI Ignore Flag |
| $0020 | Disable Rendering Timer |
| $0021 | Current PRG Bank |
| $0027 | Current CHR Bank 0 |
| $0028 | Current CHR Bank 1 |
| $0029 - $002a | HUD PPU Position (stored as big endian value) |
| $002c | Current Primary BG Color |
| $0030 - $0031 | Current Buttons being Pressed |
| $0032 - $0033 | Current Buttons being Held |
| $0035 | Game is Paused Flag |
| $0036 | Pausing is Disabled Flag |
| $0045 | Random Number (used for things based on randomization) |
| $0046 | Continues (You start with 3) |
| $0048 | World Number |
| $0055 | Technodrome Location Subarea ID (Can be 2, 3, or 4) |
| $0056 | Has Rescued Captured Turtle in Level Flag |
| $0057 | Captured Turtle ID |
| $0059 | PRG Bank before Sound Engine Update |
| $005b | Whether the special weapon is selected or not |
| $005c | Is Inside Subarea Flag (0 if overworld, 1 if subarea) |
| $005d | Current side-scrolling area (0 in overhead areas) |
| $005e | Is Mandatory Fight Flag (0 = false, 1 = fight queued, 2 = miniboss, 3 = boss) |
| $0067 | Current Turtle Selected (0:Leo, 1:Raph, 2:Mike, 3:Don) |
| $006e | Item(s) in Subarea Collect (bitwise and depends on subarea) |
| $0073 | Leo's Special Weapon (0:Nothing, 1:Stars, 2:Triple Stars, 3:Boomerangs, 4:Scrolls) |
| $0074 | Raph's Special Weapon |
| $0075 | Mike's Special Weapon |
| $0076 | Don's Special Weapon |
| $0077 | Leo's Energy ($00 - $80) |
| $0078 | Raph's Energy |
| $0079 | Mike's Energy |
| $007a | Don's Energy |
| $007d | Disarmed Bombs (bitwise) |
| $0080 - $0081 | Destroyed Barricades (bitwise) |
| $00a0 | Last Turtle Selected Upon Pause (Set when pause screen starts. Mainly used for writing which turtle has been caught) |
| $00a7 | Amount of Ropes ($00 - $63) |
| $00a8 | Leo's Special Weapon Quantity ($00 - $63) |
| $00a9 | Raph's Special Weapon Quantity |
| $00aa | Mike's Special Weapon Quantity |
| $00ab | Don's Special Weapon Quantity |
| $00b5 | Miscellaneous Game Scene ID (Can be $01-$10) |
| $00ba - $00bb | Dam Timer (first byte is countdown, second is for displaying the timer) |
| $00bf | Turtle Van Missiles |
| $00c0 | Score 99xxxx0 |
| $00c1 | Score xx99xx0 |
| $00c2 | Score xxxx990 |
| $00c3 | Unknown Score 99xxxx0 |
| $00c4 | Unknown Score xx99xx0 |
| $00c5 | Unknown Score xxxx990 |
| $00c6 | High Score 99xxxx0 |
| $00c7 | High Score xx99xx0 |
| $00c8 | High Score xxxx990 |
| $00d0 | Pause Screen State ID |
| $00d4 | Is Attacking While Ducking Flag |
| $00f0 | Skip Music Engine Update Flag |
| $00fc | PPU Scroll X |
| $00fd | PPU Scroll Y |
| $00fe | PPU Mask |
| $00ff | PPU Control |
| $0200 | Sprite Memory |
| $0460 | Turtle Y Position |
| $0480 | Turtle X Position |
| $04B0 | Turtle Y Velocity |
| $04E0 | Turtle X Velocity |
| $0500 | Invincibility Timeout |
| $056X | Enemy Hit Points |
| $0630 | Invincibility Timeout |
| $0631 | Timer for items disappearing |