smbdis_asm_fixed_bank_functions.txt

❯ In smbdis.asm, what functions are stored in the fixed bank? What functions are instead stored in bank 0?

⏺ Let me explore the project structure to understand how the code is organized.

  Searched for 4 patterns, read 3 files, listed 1 directory (ctrl+o to expand)

⏺ The map.txt file should have the exact addresses. Let me check it.

  Searched for 6 patterns, read 2 files (ctrl+o to expand)

⏺ Now I have the full picture. Let me generate a detailed symbol map to see which functions land above or below the $C000 boundary.

⏺ Bash(ld65 -C ldconfig.txt smbdis.o -m fullmap.txt 2>&1 | head -5; head -100 fullmap.txt)
  ⎿  Modules list:
     -------------
     smbdis.o:
     … +24 lines (ctrl+o to expand)

⏺ Bash(ca65 smbdis.asm -l smbdis.lst 2>&1 | head -5; wc -l smbdis.lst)
  ⎿  17823 smbdis.lst

  Searching for 6 patterns, reading 1 file… (ctrl+o to expand)
  Searched for 6 patterns, read 1 file (ctrl+o to expand)

⏺ Bash(# Extract all lines with a label (colon), parse the address and label name
      # Fixed bank is $C000-$FFFF = 00C000-00FFFF in listing…)
  ⎿  008000     Start:
     00800A
     00800F
     … +32 lines (ctrl+o to expand)

⏺ Bash(# Get all labels with their hex addresses, then split at C000
      grep "^00[89ABCDEFabcdef]" /Users/jay/work/SMBASM/smbdis.lst | grep "[A-Z][a-zA-Z0-9_]*:" | \…)
  ⎿  1993 /tmp/smb_labels.txt
     --- Last few bank 0 labels (just before C000) ---
     00BF6D     ContVMove:
     … +50 lines (ctrl+o to expand)

  Searched for 7 patterns (ctrl+o to expand)

⏺ Here's a breakdown of what lives in each bank, based on the assembler listing and linker config:

  ---
  Bank 0 ($8000–$BFFF) — switchable, default at power-up

  Boot / NMI:
  Start, VBlank1/2, WBootCheck, ColdBoot, NonMaskableInterrupt, ScreenOff, InitBuffer

  Frame management:
  DecTimers, SpriteShuffler, OperModeExecutionTree, PauseRoutine

  Title / menu / demo:
  TitleScreenMode, GameMenuRoutine, StartGame, DemoEngine, DrawMushroomIcon, ChkWorldSel

  Victory / end-of-game:
  VictoryMode, AutoPlayer, PrintVictoryMessages, PlayerEndWorld

  HUD / status display:
  FloateyNumbersRoutine, WriteTopStatusLine, WriteBottomStatusLine, DisplayTimeUp, DisplayIntermediate, WriteGameText, PutLives,
  PrintWarpZoneNumbers

  Screen / palette setup:
  ScreenRoutines, InitScreen, SetupIntermediate, GetAreaPalette, ColorRotation, RenderAreaGraphics, RenderAttributeTables,
  DrawTitleScreen

  Area parser:
  AreaParserTaskControl

  Block / metatile graphics:
  BlockGfxData, MetatileGraphics_Low/High, Palette0–3_MTiles, RemoveCoin_Axe, WriteBlockMetatile, DestroyBlockMetatile,
  ReplaceBlockMetatile, WriteBlankMT

  Block object logic:
  BlockObjectsCore, BouncingBlockHandler, BumpBlock, BrickShatter, SpawnBrickChunks, BlockObjMT_Updater, MushFlowerBlock, StarBlock,
  VineBlock, ExtraLifeMushBlock

  Shared movement / gravity:
  MoveObjectHorizontally, MovePlayerHorizontally, MoveEnemyHorizontally, MovePlayerVertically, MoveD_EnemyVertically, MoveRedPTroopa,
  MovePlatformDown/Up, ImposeGravity, AlterYP

  ---
  Fixed Bank ($C000–$FFFF) — always mapped

  Enemy/loop core:
  EnemiesAndLoopsCore, ProcLoopCommand, FindLoop, LoopCmdWorldNumber/PageNumber/YPosition, ExecGameLoopback

  Enemy data parsing:
  ProcessEnemyData, CheckEndofBuffer, CheckRightBounds, PositionEnemyObj, CheckForEnemyGroup, BuzzyBeetleMutate, InitEnemyObject,
  CheckFrenzyBuffer

  Enemy init (one per type):
  InitGoomba, InitPodoboo, InitRedKoopa, InitHammerBro, InitBloober, InitRedPTroopa, InitBulletBill, InitCheepCheep, InitLakitu,
  InitLongFirebar, InitShortFirebar, InitFlyingCheepCheep, InitBowser, InitBowserFlame, InitFireworks, InitPiranhaPlant,
  InitEnemyFrenzy, InitJumpGPTroopa, InitBalPlatform, InitDropPlatform, InitHoriPlatform, InitVertPlatform

  Enemy run / AI:
  RunEnemyObjectsCore, RunNormalEnemies, RunBowserFlame, RunFirebarObj, RunSmallPlatform, RunLargePlatform, MoveNormalEnemy,
  MoveDefeatedEnemy, MoveJumpingEnemy, MovePodoboo, ProcHammerBro, HammerBroJumpCode, LakituAndSpinyHandler, CreateSpiny,
  DoBulletBills, MovePiranhaPlant, FirebarSpin, BalancePlatform, DrawEraseRope, RunBowser, BowserControl, MoveD_Bowser

  Enemy collision / physics:
  ChkToStunEnemies, LandEnemyProperly, ProcEnemyDirection, DoEnemySideCheck, EnemyJump, EnemyLanding, PlayerEnemyDiff,
  HammerBroBGColl, KillEnemyAboveBlock, FireballBGCollision, InitFireballExplode

  Bounding box / collision detection:
  BoundingBoxCore, PlayerCollisionCore, SprObjectCollisionCore, BlockBufferChk_Enemy, BlockBufferChk_FBall, GetEnemyBoundBox,
  GetFireballBoundBox, LargePlatformBoundBox

  Enemy / misc drawing:
  DrawEnemyObjRow, DrawBrickChunks, DrawFireball, DrawFirebar, DrawExplosion_Fireball/Fireworks, DrawSmallPlatform, DrawBubble,
  BowserGfxHandler, RunStarFlagObj, DrawStarFlag

  Player graphics:
  PlayerGraphicsTable, PlayerGfxHandler, FindPlayerAction, PlayerGfxProcessing, RenderPlayerSub, DrawPlayerLoop, ProcessPlayerAction

  Music engine + all music data:
  HandleSquare1/2Music, HandleTriangleMusic, HandleNoiseMusic, LoadEnvelopeData, FindAreaMusicHeader, all *MusData and *Hdr tables,
  FreqRegLookupTbl, MusicLengthLookupTbl

  Bank-switching helpers (must live in fixed bank):
  ReadAreaData ($FFD5) and BankSwitch ($FFF5) — these survive the bank switch precisely because they're in the fixed bank.

  ---
  The pattern: Bank 0 holds boot, init, UI, metatile graphics, and shared movement code. The fixed bank holds everything needed during
   active gameplay: all enemy logic, collision detection, player rendering, the full music engine, and the bank-switching helpers
  themselves.