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Castlevania III: Dracula's Curse/RAM map: Difference between revisions
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$0200 #100 OAM Data | $0200 #100 OAM Data | ||
$0300 #a0 Tile Data | $0300 #a0 Tile Data | ||
$03C0 #05 Audio Channel Volume Duration | $03C0 #05 Audio Channel Volume Envelope Duration | ||
$03C5 #05 Audio Channel | $03C5 #05 Audio Channel Volume Envelope Position | ||
$03CA #05 Audio Channel Volume Envelope Loop Count | |||
$03CF #05 Audio Channel Volume Envelope Loop Point | |||
$03D4 #05 Audio Channel Fadeout Point ''(fades out when equal to $100,X)'' | $03D4 #05 Audio Channel Fadeout Point ''(fades out when equal to $100,X)'' | ||
$03D9 #05 Audio Channel Volume Envelope | $03D9 #05 Audio Channel Volume Envelope | ||
''(bits 0-3 = value; $03D4 = duration*value >> 4)'' | ''(bits 0-3 = value; $03D4 = duration*value >> 4)'' | ||
$03DE #05 Audio Channel Next Fade | $03DE #05 Audio Channel Next Fade Duration | ||
$03E3 #05 Audio Channel Fade | $03E3 #05 Audio Channel Fade Duration | ||
$03E8 #05 Audio Channel Alternate Duty Cycle | $03E8 #05 Audio Channel Alternate Duty Cycle | ||
$03ED #05 Audio Channel Next | $03ED #05 Audio Channel Next Pitchbend Duration | ||
$03F2 #05 Audio Channel Pitchbend Duration | $03F2 #05 Audio Channel Pitchbend Duration | ||
$03F7 #05 Audio Channel Sweep Rate | $03F7 #05 Audio Channel Sweep Rate | ||
Revision as of 04:50, 17 August 2022
The following article is a RAM map for Castlevania III: Dracula's Curse.
Address Size Description
-------- ---- -----------
$0017 Repeat Counter
$0018 System State
00 = Title; 02 = New Game; 03 = In-game Transition; 04 = In-Game;
05 = Game Over Transition; 06 = Game Over; 07 = Stage Select Debug;
08 = Map Screen; 09 = Prayer Scene; 0a = Name Entry; 0b = Password Entry;
0c = Epilogue; 0d = Credit Roll; 0e = Respawn; 0f = Sound Test Debug
$0019 System Substate
$001A Step Counter
$001C Blackout Delay
$001F Randomizer
$0026 #02 Controller Buttons Pressed
01 = right; 02 = left; 04 = down; 08 = up;
10 = start; 20 = select; 40 = B; 80 = A
$0028 #02 Controller Buttons Held
$002A Game State
$002B User Paused (toggled by Start button)
$002C Boss Defeated
$002E Checkpoint
$002F Grant Defeated
$0030 #02 System Effect Timer
$0032 Stage
$0033 Block
$0034 Room
$0035 Lives
$0036 #03 Score
$003A Partner
00 = Trevor; 01 = Syfa; 02 = Grant; 03 = Alucard; ff = None
$003B Partner Active
$003C Player's Health
40 = full
$003D Boss Health
$003E Score Target (for extra life)
$003F Default Drawing State (write to $006D)
$0046 #08 CHR Banks
$004E Hard Mode CHR Bank (overwrites $0049)
$0056 #02 View Position (little endian)
$0058 View Subpixel Position
$0059 Left Spawn Area
$005A Right Spawn Area
$005C Tile Assembly Row Iterator
$005D #02 Tile Assembly Pointer
$005F #02 Pallet Map Pointer
$0061 #02 Nametable Write Address
$0063 Tile Assembly ID
$0064 Transition Timer
$0065 Scroll Direction
00 = left; 01 = right; 02 = unchanged
$0066 View Refreshed Position
$0067 Update View
$0068 Room Orientation
00 = horizontal; 80 or 81 = vertical; 82 = scroll up;
83 = scroll down; 84 = collapse up; 85 = collapse down
$0069 #02 Stair Map Address
$006B Player Animation State (for transitions)
and menu selections
$006C Current Instance (saves X register)
$006D Drawing State
$006E View Speed
$006F #02 PPU Scroll
$0071 Room Size
$0072 CHR Write Mode
00 or 03 = all CHR banks; 01 = status bar banks; 02 = clear NPC banks
$0073 Previous Room Orientation
$0074 Music Loaded
$0075 Transition Nametable (nametable to use after door closes)
$0076 Horizontal Spawner Block
$0077 First Spawner Block
$0078 Boss Scroll Lock
$0079 Vertical Spawner Block
$007A Vertical Spawner Previous (?)
$007B Spawner Count
$007D Room Type
10 = Stormclouds; 20 = Autowalk; 30 = River; 40 = Clockwork;
50 and 60 = Watery Grave; 70 = Flood Zone; 80 = Collapsing Bridge
Note: lower 4 bits alter behavior
$007E #02 Time
$0080 Wounded Timer (invincibility frames)
$0081 Damage Received
$0082 PC Height
00 = Trevor standing; 01 = Syfa standing; 02 = Grant standing; 03 = Alucard standing;
04 = Trevor duck; 05 = Syfa duck; 06 = Grant duck; 07 = Alucard duck; 08 = Bat
$0084 Hearts
$0085 Trevor Subweapon
00 = none; 01 = axe; 02 = boomerang; 03 = knife/book; 04 = holy water; 05 = fireball;
06 = freeze; 07 = orb; 08 = axe; 09 = boomerang; 0a = knife/book ;0b = clock
$0086 Partner Subweapon
$0087 Trevor Subweapon Multiplier
00 = none; 01 = [II]; 02 = [III]
$0088 Partner Subweapon Multiplier
$008B Conveyance
01 = Elevator/Frozen enemy; 02 = Scroll-locked right; 05 = Teeter-totter;
06 = Cogwheel; 07 = Mud; 08 = Waterfall; 09 = Waterfall w/current;
0a = Conveyor left; 0b = Conveyor right; 0d = Petrified; 0e = Auto-walk
$008C Whip Spark Timer
$008D Room Initialized
$008E Trevor Weapon Level
00 = short; 01 = medium; 02 = long
$008F Partner Weapon Level
00 = one orb; 01 = two orbs; 03 = three orbs
$0090 Knockback Direction
00 = left; 01 = right
$0091 Conveyor (see $008B)
$0093 Cog Proximity
00 = none; 01 = right OR below; 02 = right AND below
$0094 Cog ID
$0095 Cogwheel Size
00 = small; 01 = large
$009C Subweapon Kill Count (affects multiplier drops)
$009D Variable Jump (for Grant)
$009E Subweapon Iterator
$009F Previous Game State
$00A0 Recent Player Direction (copy of $009E)
$00A1 Previous Player Direction (copy of $0062)
$00A3 Game Step Counter (only increments while game not paused)
$00A5 Check Right Tile
$00AB Stopwatch Active
$00AC Stopwatch Timer
$00AD Invincibility Potion Timer
$00AE Alucard Bat Timer (drains 1 heart when decreased to 0)
$00AF Landing Delay (prevents walking between elevators)
$00B0 Load Doppelganger Sprites (forces CHR updates)
$00B1 Current Instance (backup for X register)
$00B8 Current Platform (ID of elevator or frozen enemy)
$00B9 Crash Timer (stuns Player after falling too far)
$00BA Boss Fight
$00BF Faint Pause (pauses game when killed or time runs out)
$00C8 Horizontal Scroll Lock (used by crumbling bridge)
$00CA Flood Height
$00CE Weapon Kill Count (affects item drops)
$00CF Previous Conveyance (backup of $0088)
$00D0 Vertical Ceiling (lowest y-coordinate in vertical room)
$00EF Audio Sample
$00F0 #04 Candle Status (32-bit mask)
$00F4 #04 Breakable Wall Status
00 = unused/unbroken; ff = broken
$00F8 #02 Previous Controller Buttons Pressed
$00FA #02 Previous Controller Buttons Held
$00FC #02 PPU Scroll
$00FE PPU Mask (for hue shifts and greyscale)
$00FF PPU Control
$0200 #100 OAM Data
$0300 #a0 Tile Data
$0400 #1c Sprite Frame Index
$041C #1c Y-Coordinate
$0438 #1c X-Coordinate
$0454 #1c Pallet Offset
$0470 #1c Attributes
01 = destroyed; 02 = frozen; 04 = unknown; 08 = flicker;
10 = illusory; 20 = inanimate; 40 = moving; 80 = invisible
$048C #1c Animation Batch (even numbers)
00-06 = Player; 08-12 = NPCs; 14 = Epilogue; 16-1C = Doppelganger
$04A8 #1C Sprite Mirrored
$04C4 #17 X-Coordinate Subpixel
$04DB #17 Y-Coordinate Subpixel
$04F2 #17 Horizontal Speed
$0509 #17 Horizontal Speed Subpixel
$0520 #17 Vertical Speed
$0537 #17 Vertical Speed Subpixel
$054E #17 Object Index
$0565 Player State
$0566 #11 Stun Timer
$0578 Weapon State
$0579 #03 Subweapon State
$057C #17 Animation Timer
$0593 #17 Sprite Frame (used to calculate $0400,X)
$05AA #17 Sprite Index
$05C1 Moving Down
$05C2 #12 NPC State
$05D4 Player Stunned State
$05D5 #03 Subweapon Throw Delay
$05D8 Player Jump State
00-1D = Trevor/Syfa/Alucard; 1E-39 = Grant
$05D9 #0c Boss Use
$05E5 #06 Candle Drop
83 = Axe; 84 = Cross; 85 = Dagger; 86 = Holy Water; 87 = Stopwatch;
88 = Syfa Fire; 89 = Syfa Ice; 8a = Syfa Water; 8b = Grant Dagger;
8c Grant Axe; 8d-8f = Upgrades (8f removed); 90 = Wall Meat;
91 = Invincibility Potion; 92 = Rosary; 93-9b = Coins; 9c = 1UP;
9d = Big Heart; 9e = Small Heart; 9f-a0 = Multipliers
$05EB Stair Stun Timer
$05EF Stair Direction
Grant Jump State Fraction (functions like speed variables)
$05F0 #12 AI Class (determines behavior)
$0602 Stair Stun (decreases $05EB)
$0606 Grant Gravity Subpixel (increases $05EF for Grant)
$0607 #12 State Timer (time between state changes for most NPCs)
Sinusoid Center Axis
$0619 Ally Swap Y-Coordinate
$061A #03 Subweapon Damage
$061D Stair Timer (time to climb one step)
Grant Gravity (increases $05D8 for Grant)
$061E #12 Miscellaneous Ticker (usually timer or counter for NPCs)
$0630 Weapon Damage
$0631 #03 Subweapon Deflection (copy of $0658,X on Cross hit)
$0634 #17 Miscellaneous Use (used by a couple NPCs)
$0646 #12 Spawner Index
$0658 #0d NPC Damage
$0664 #06 Candle Active
$066A #12 Applied Effect (copy of $061A,X on subweapon hit)
$067B #12 NPC Hitpoints
$068E #12 Weapons Impact
01 = weapon; 02 = subweapon 1; 04 = subweapon 2; 08 = subweapon 3
$06DC Music Paused
$06DD Boss Scream Cutoff
$06E0 #90 Collision Map
$0770 #08 CHR5 Solid Definitions
Byte 0 = empty; Byte 1 = mud; Byte 2 = convey right; Byte 3 = convey left;
Byte 4 = crumbling; Byte 5 = ceiling spike; Byte 6 = solid; Byte 7 = floor spike
$0778 #08 CHR6 Solid Definitions
$0780 Background Animation Frame
$0780 Entry Selector Column
$0780 Map Clipping
00 = To Grant; 01 = To Syfa; 02 = From Alucard
$0781 Background Animation Timer
$0781 Entry Selector Row
$0781 Map Fade-out Value
$0782 Previous Selector Column
$0782 Map Timer
$0782 Epilogue Ally
$0783 Previous Selector Row
$0783 Map Horizontal Speed Subpixel
$0783 Epilogue State
$0784 Name Cursor Position
$0784 Map Horizontal Speed
$0784 Castle Shake Direction
$0785 Map Vertical Speed Subpixel
$0785 Epilogue Text Page
$0786 Password Icon
$0786 Map Vertical Speed
$0787 Previous Password Icon
$0787 Map Scroll Timer
$0788 #02 Password Decryption Dump
$0788 Map X-coordinate Subpixel
$0788 Epilogue Scroll Timer
$0789 Map Y-coordinate Subpixel
$078A Epilogue Timer
$078A Map Path PPU Scroll
$078B Password Errors (used for debugging)
$088B Map Path PPU Control
$078C #02 Map Path PPU Address
$078C Update Selector
$0790 #10 Entered Password
00 = empty; 01 = whip; 02 = cross; 03 = heart
$0790 Map Screen Platform
00 = full; 01 = short west; 02 = bottom east;
03 = top west; 04 = middle west; 05 = bottom west
$07A0 #0a Generated Password
$07B1 #02 Stacked Breakable Wall
$07B3 #02 Lower Block Broken
$07B5 #02 Upper Block Broken
$07B7 #02 Wall ID (points to $00F4,X)
$07C2 #06 Spawner Type
$07C8 #06 Spawner State
$07CE #06 Spawner Timer
$07D4 #06 Spawner Y-Coordinate
$07DA #06 Spawner x-Coordinate
$07E0 #06 Spawner Offscreen
$07E6 #06 Spawner NPC Object
$07EC #06 Bone Dragon King Frames (two ribs per byte)
$07EC Cyclops Lightning State
Bone Dragon Cycle
Giant Bat Leader
Dracula Phase
00 = Dracula; 01 = demon; 02 = Pazuzu
$07ED Victory State
Bone Dragon Mirrored
Collapsing Bridge Length
Giant Bat State
$07EE Bone Dragon Fireball Timer
Death Scythe Count
$07EF Bone Dragon Attacking
$07F3 Boss Phase
00 = boss fight; 01 = boss defeat; 02 = crystal drop;
03 = battle over; 80 = boss waiting
Victory Delay (timer after battle over)
$07F6 Hard Mode
$07F8 #08 Player Name
Address Size Description
-------- ---- -----------
$0018 System State
00 = Title; 02 = New Game; 03 = In-game Transition; 04 = In-Game;
05 = Game Over Transition; 06 = Game Over; 07 = Stage Select Debug;
08 = Map Screen; 09 = Prayer Scene; 0a = Name Entry; 0b = Password Entry;
0c = Epilogue; 0d = Credit Roll; 0e = Respawn; 0f = Sound Test Debug
$0019 System Substate
$001B System Step Counter
$001D Blackout Delay
$0020 Randomizer
$0021 PPU Bank (write to $B003)
$0028 #02 Controller Buttons Pressed
01 = right; 02 = left; 04 = down; 08 = up;
10 = start; 20 = select; 40 = B; 80 = A
$002A #02 Controller Buttons Held
$002C Game State
$002D User Paused (toggled by Start button)
$002E Boss Defeated
$0030 Checkpoint (used for Password Entry)
$0031 Grant Defeated
$0032 #02 System Effect Timer
$0034 Stage
$0035 Block
$0036 Room
$0037 Lives
$0038 #08 CHR Banks
$0040 IRQ Control
$0041 #02 IRQ Latch
$0043 Default Drawing State (write to $006A)
$0044 #03 Score
$0048 Partner
00 = Trevor; 01 = Syfa; 02 = Grant; 03 = Alucard; ff = None
$0049 Partner Active
$004A Player's Health
40 = full
$004B Boss Health
$004C Score Target (for extra life)
$0053 #02 View Position
$0055 View Subpixel Position
$0056 Left Spawn Area
$0057 Right Spawn Area
$005A #02 Tile Assembly Pointer
$005C #02 Pallet Map Pointer
$005E #02 Nametable Write Address
$0060 Tile Assembly ID
$0061 Transition Timer
$0062 Scroll Direction
00 = left; 01 = right; 02 = unchanged
$0063 View Refreshed Position
$0064 Update View
$0065 Room Orientation
00 = horizontal; 80 or 81 = vertical; 82 = scroll up;
83 = scroll down; 84 = collapse up; 85 = collapse down
$0066 #02 Stair Map Address
$0068 Player Animation State (for transitions)
$0069 Current Instance (saves X register)
$006A Drawing State
$006B View Speed
$006C #02 PPU Write Position
$006E Room Size
$006F CHR Write Mode
00 or 03 = all CHR banks; 01 = status bar banks; 02 = clear NPC banks
$0070 Previous Room Orientation
$0071 Music Loaded
$0072 Transition Nametable (nametable to use after door closes)
$0073 Horizontal Spawner Block
$0074 First Spawner Block
$0075 Boss Scroll Lock
$0076 Vertical Spawner Block
$0077 Vertical Spawner Previous (?)
$0078 Spawner Count
$007A Room Type
10 = Stormclouds; 20 = Autowalk; 30 = River; 40 = Clockwork;
50 and 60 = Watery Grave; 70 = Flood Zone; 80 = Collapsing Bridge
Note: lower 4 bits alter behavior
$007B #02 Time
$007D Wounded Timer (invincibility frames)
$007E Damage Received
$007F PC Height
00 = Trevor standing; 01 = Syfa standing; 02 = Grant standing; 03 = Alucard standing;
04 = Trevor duck; 05 = Syfa duck; 06 = Grant duck; 07 = Alucard duck; 08 = Bat
$0081 Hearts
$0082 Trevor Subweapon
00 = none; 01 = axe; 02 = boomerang; 03 = knife/book; 04 = holy water; 05 = fireball;
06 = freeze; 07 = orb; 08 = axe; 09 = boomerang; 0a = knife/book ;0b = clock
$0083 Partner Subweapon
$0084 Trevor Subweapon Multiplier
00 = none; 01 = [II]; 02 = [III]
$0085 Partner Subweapon Multiplier
$0088 Conveyance
01 = Elevator/Frozen enemy; 02 = Scroll-locked right; 05 = Teeter-totter;
06 = Cogwheel; 07 = Mud; 08 = Waterfall; 09 = Waterfall w/current;
0a = Conveyor left; 0b = Conveyor right; 0d = Petrified; 0e = Auto-walk
$0089 Whip Spark Timer
$008A Room Initialized
$008B Trevor Weapon Level
00 = short; 01 = medium; 02 = long
$008C Partner Weapon Level
00 = one orb; 01 = two orbs; 03 = three orbs
$008D Knockback Direction
00 = left; 01 = right
$008E Conveyor (see $0088)
$0090 Cog Proximity
00 = none; 01 = right OR below; 02 = right AND below
$0091 Cog ID
$0092 Cogwheel Size
00 = small; 01 = large
$0099 Subweapon Kill Count (affects multiplier drops)
$009A Variable Jump (for Grant)
$009B Subweapon Iterator
$009C Previous Game State
$009D Recent Player Direction (copy of $009E)
$009E Previous Player Direction (copy of $0062)
$00A0 Game Step Counter (only increments while game not paused)
$00A2 Check Right Tile
$00A8 Stopwatch Active
$00A9 Stopwatch Timer
$00AA Invincibility Potion Timer
$00AB Alucard Bat Timer (drains 1 heart when decreased to 0)
$00AC Landing Delay (prevents walking between elevators)
$00AD Load Doppelganger Sprites (forces CHR updates)
$00AE Current Instance (backup for X register)
$00B5 Current Platform (ID of elevator or frozen enemy)
$00B6 Crash Timer (stuns Player after falling too far)
$00B7 Boss Fight
$00BC Faint Pause (pauses game when killed or time runs out)
$00C5 Horizontal Scroll Lock (used by crumbling bridge)
$00C7 Flood Height
$00CB Weapon Kill Count (affects item drops)
$00CC Previous Conveyance (backup of $0088)
$00CD Vertical Ceiling (lowest y-coordinate in vertical room)
$00E0 #02 Audio Current Note Address
$00E2 #02 Audio Redirect Address
$00E2 Audio Data Temporary Variable
$00E4 #02 Audio Data 16-bit Variable
$00E6 #02 Audio Song Base Address
$00E8 #02 Audio Song Address
$00EA Audio Channels to Load
$00EB Audio Routine PROM Bank
$00EC #02 Audio Current Period (i.e., pitch)
$00EE Audio Current Channel
$00EF Audio Song ID
$00F0 #04 Candle Status (32-bit mask)
$00F4 #04 Breakable Wall Status
00 = unused/unbroken; ff = broken
$00F8 #02 Previous Controller Buttons Pressed
$00FA #02 Previous Controller Buttons Held
$00FC #02 PPU Scroll
$00FE PPU Mask (for hue shifts and greyscale)
$00FF PPU Control
Audio channels: (grouped by 5, 7, or 9)
00 = Pulse 1; 01 = Pulse 2; 02 = Sawtooth; 03 = BGM Square 1; 04 = BGM Square 2
05 = SFX Square 1; 06 = SFX Square 2;
07 = Drums (DCM & Noise); 08 = Noise
$0100 #09 Audio Channel Note Duration
$0109 #09 Audio Channel Song ID
$0112 #09 Audio Channel Next Note Duration
$011B #09 Audio Channel Behavior
bit 0 = SFX (ignore ritenuto); bits 1-2 = init/decay/sustain/release;
bit 3 = Al segno loop; bit 5 = coda loop; bit 6 = ignore envelope;
$0124 #09 Audio Channel Loop Count
$012D #09 Audio Channel Note Address Low Byte
$0136 #09 Audio Channel Note Address High Byte
$013F #09 Audio Channel Al Segno Address Low Byte
$0148 #09 Audio Channel Al Segno Address High Byte
$0151 #09 Audio Channel Coda Address Low Byte
$015A #09 Audio Channel Coda Address High Byte
$0163 #09 Audio Channel Previous Period High Byte
$016A Audio Global Dampening (lowers volume for all channels)
$016C #09 Audio Channel Volume
$0173 Audio Global Fade Timer (decreases $017C after 2b steps)
$0175 #09 Audio Channel Next Volume / Channel Dampening Placeholder
$017C Audio Global Fade Delay
$017E #09 Audio Channel Default Duty Cycle
$0185 Audio Global Mute for Pause
$0187 #07 Audio Channel Dampening (lowers volume for specific channel)
$018E #07 Audio Channel Attributes
bit 4 = use waveform; bit 5 = alternate duty; bit 7 = disabled needs more info
$0195 #07 Audio Channel Pitch Bend Amount
$019C Audio SFX Square 1 Sweep (write to $4001)
$019E Audio DPCM ID
$019F #02 Audio Square Period Low Byte (write to $4002/$4006)
$01A3 #05 Audio Channel Downshift (doubles period of default note n times)
$01A8 #05 Audio Channel Note Offset
(adds signed value to note ID to look up period)
$01AD #05 Audio Channel Period Low (usually write to each channel's period register)
$01B2 #05 Audio Channel Period High (usually write to each channel's period register)
$01B7 #05 Audio Channel Volume Envelope
(if bit 7 set, fade out instead based on bits 0-3)
$01BC Audio SFX Square Register Offset
$01BD Audio Global Ritenuto Delay (counts up to $01BE)
$01BE Audio Global Ritenuto Cutoff (frames until $01BF set)
$01BF Audio Global Ritenuto (prolongs BGM note duration when set)
$01C0 #40 The Stack
$0200 #100 OAM Data
$0300 #a0 Tile Data
$03C0 #05 Audio Channel Volume Envelope Duration
$03C5 #05 Audio Channel Volume Envelope Position
$03CA #05 Audio Channel Volume Envelope Loop Count
$03CF #05 Audio Channel Volume Envelope Loop Point
$03D4 #05 Audio Channel Fadeout Point (fades out when equal to $100,X)
$03D9 #05 Audio Channel Volume Envelope
(bits 0-3 = value; $03D4 = duration*value >> 4)
$03DE #05 Audio Channel Next Fade Duration
$03E3 #05 Audio Channel Fade Duration
$03E8 #05 Audio Channel Alternate Duty Cycle
$03ED #05 Audio Channel Next Pitchbend Duration
$03F2 #05 Audio Channel Pitchbend Duration
$03F7 #05 Audio Channel Sweep Rate
$0400 #1c Sprite Frame Index
$041C #1c Y-Coordinate
$0438 #1c X-Coordinate
$0454 #1c Pallet Offset
$0470 #1c Attributes
01 = destroyed; 02 = frozen; 04 = unknown; 08 = flicker;
10 = illusory; 20 = inanimate; 40 = moving; 80 = invisible
$048C #1c Animation Batch (even numbers)
00-06 = Player; 08-12 = NPCs; 14 = Epilogue; 16-1C = Doppelganger
$04A8 #1C Sprite Mirrored
$04C4 #17 X-Coordinate Subpixel
$04DB #17 Y-Coordinate Subpixel
$04F2 #17 Horizontal Speed
$0509 #17 Horizontal Speed Subpixel
$0520 #17 Vertical Speed
$0537 #17 Vertical Speed Subpixel
$054E #17 Object Index
$0565 Player State
$0566 #11 Stun Timer
$0578 Weapon State
$0579 #03 Subweapon State
$057C #17 Animation Timer
$0593 #17 Sprite Frame (used to calculate $0400,X)
$05AA #17 Sprite Index
$05C1 Moving Down
$05C2 #12 NPC State
$05D4 Player Stunned State
$05D5 #03 Subweapon Throw Delay
$05D8 Player Jump State
00-1D = Trevor/Syfa/Alucard; 1E-39 = Grant
$05D9 #0c Boss Use
$05E5 #06 Candle Drop
83 = Axe; 84 = Cross; 85 = Dagger; 86 = Holy Water; 87 = Stopwatch;
88 = Syfa Fire; 89 = Syfa Ice; 8a = Syfa Water; 8b = Grant Dagger;
8c Grant Axe; 8d-8f = Upgrades (8f removed); 90 = Wall Meat;
91 = Invincibility Potion; 92 = Rosary; 93-9b = Coins; 9c = 1UP;
9d = Big Heart; 9e = Small Heart; 9f-a0 = Multipliers
$05EB Stair Stun Timer
$05EF Stair Direction
Grant Jump State Fraction (functions like speed variables)
$05F0 #12 AI Class (determines behavior)
$0602 Stair Stun (decreases $05EB)
Freezing Rivers
Turning Into Bat
$0606 Grant Gravity Subpixel (increases $05EF for Grant)
$0607 #12 State Timer (time between state changes for most NPCs)
Sinusoid Center Axis
$0619 Ally Swap Y-Coordinate
$061A #03 Subweapon Damage
$061D Stair Timer (time to climb one step)
Grant Gravity (increases $05D8 for Grant)
$061E #12 Miscellaneous Ticker (usually timer or counter for NPCs)
$0630 Weapon Damage
$0631 #03 Subweapon Deflection (copy of $0658,X on Cross hit)
$0634 #17 Miscellaneous Use (used by a couple NPCs)
$0646 #12 Spawner Index
$0658 #0d NPC Damage
$0664 #06 Candle Active
$066A #12 Applied Effect (copy of $061A,X on subweapon hit)
$067B #12 NPC Hitpoints
$068E #12 Weapons Impact
01 = weapon; 02 = subweapon 1; 04 = subweapon 2; 08 = subweapon 3
$06A0 #05 Audio Channel Pitch Envelope Loop Start
$06A5 #05 Audio Channel Pitch Envelope ID
$06AA #05 Audio Channel Pitch Envelope Position
$06AF #05 Audio Channel Pitch Envelope Loop Count
$06B4 #05 Audio Channel Sustain State
$06B9 #05 Audio Channel Sustain Position (from 0 to 3)
$06BE #05 Audio Channel Sustain Dampen
$06C3 #04 Audio BGM Square 1 Sustain Period Low Bytes
$06C7 #04 Audio BGM Square 2 Sustain Period Low Bytes
$06CB #04 Audio BGM Square 1 Sustain Period High Bytes
$06CF #04 Audio BGM Square 2 Sustain Period High Bytes
$06D3 #09 Audio Channel PROM Bank
$06DC Music Paused
$06DD Boss Scream Duration stops DPCM playback
$06E0 #90 Collision Map
$0770 #08 CHR5 Solid Definitions
Byte 0 = empty; Byte 1 = mud; Byte 2 = convey right; Byte 3 = convey left;
Byte 4 = crumbling; Byte 5 = ceiling spike; Byte 6 = solid; Byte 7 = floor spike
$0778 #08 CHR6 Solid Definitions
$0780 Background Animation Frame
$0781 Background Animation Timer
$0782 Epilogue Ally
$0783 Epilogue State
$0784 Castle Shake
$0785 Epilogue Text Page
$0780 Entry Selector Column
$0780 Entry Selector Column
$0780 Map Clipping
00 = To Grant; 01 = To Syfa; 02 = From Alucard
$0781 Background Animation Timer
$0781 Entry Selector Row
$0781 Map Fade-out Value
$0782 Previous Selector Column
$0782 Map Timer
$0782 Epilogue Ally
$0783 Previous Selector Row
$0783 Map Horizontal Speed Subpixel
$0783 Epilogue State
$0784 Name Cursor Position
$0784 Map Horizontal Speed
$0784 Castle Shake Direction
$0785 Map Vertical Speed Subpixel
$0785 Epilogue Text Page
$0786 Password Icon
$0786 Map Vertical Speed
$0787 Previous Password Icon
$0787 Map Scroll Timer
$0788 #02 Password Decryption Dump
$0788 Map X-coordinate Subpixel
$0788 Epilogue Scroll Timer
$0789 Map Y-coordinate Subpixel
$078A Epilogue Timer
$078A Map Path PPU Scroll
$078B Password Errors (used for debugging)
$088B Map Path PPU Control
$078C #02 Map Path PPU Address
$078C Update Selector
$0790 #10 Entered Password
00 = empty; 01 = whip; 02 = cross; 03 = heart
$0790 Map Screen Platform
00 = full; 01 = short west; 02 = bottom east;
03 = top west; 04 = middle west; 05 = bottom west
$07A0 #0a Generated Password
$07B1 #02 Stacked Breakable Wall
$07B3 #02 Lower Block Broken
$07B5 #02 Upper Block Broken
$07B7 #02 Wall ID (points to $00F4,X)
$07C2 #06 Spawner Type
$07C8 #06 Spawner State
$07CE #06 Spawner Timer
$07D4 #06 Spawner Y-Coordinate
$07DA #06 Spawner x-Coordinate
$07E0 #06 Spawner Offscreen
$07E6 #06 Spawner NPC Object
$07EC #06 Bone Dragon King Frames (two ribs per byte)
$07EC Cyclops Lightning State
Bone Dragon Cycle
Giant Bat Leader
Dracula Phase
00 = Dracula; 01 = demon; 02 = Pazuzu
$07ED Victory State
Bone Dragon Mirrored
Collapsing Bridge Length
Giant Bat State
$07EE Bone Dragon Fireball Timer
Death Scythe Count
$07EF Bone Dragon Attacking
$07F3 Boss Phase
00 = boss fight; 01 = boss defeat; 02 = crystal drop;
03 = battle over; 80 = boss waiting
Victory Delay (timer after battle over)
$07F6 Hard Mode
$07F8 #08 Player Name
Internal Data for Castlevania III
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