Pass 3 for NES PowerPad Test Card (U): name all data tables and VramWrite streams
- Decoded the VramWrite ($E1CC) stream format: <addr hi> <addr lo> <count> <bytes>, $00 terminator - Named all 9 payload streams ($E4CC-$E7C2, no gaps/overlaps) plus VramWriteSourcePointerTable at $F000 - Split PadBitTableLives into Player1TileTable ($E4B4) and Player2TileTable ($E4C0), 12 entries each (Y=0..11) - Decoded CHR font (digits $30-$39, letters $3A-$52, space $5F; 'W' missing from the A-Z run) and recovered on-screen text including 'PRESS A TO TEST SIDE-A' / 'SIDE-B' - Documented that the 16 KiB PRG is two byte-identical 8 KiB halves; $C000 copy is dead - Documented 7 unreached subroutines inside the live code region (kept as .byte per Pass-1 policy) - Fixed a stray duplicate sentence and stale _wip paths in root OVERVIEW.md Byte-identical ROM verified.
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# MUSCLE (U) zero-page names - Pass 2
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# kind<TAB>old<TAB>new<TAB>note
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zp Zp10 SourcePointerLo Lo byte of the compressed VRAM/attribute stream pointer
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zp Zp11 SourcePointerHi Hi byte of the compressed VRAM/attribute stream pointer
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zp Zp12 DestinationPointerLo Lo byte of the VRAM destination pointer
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zp Zp13 DestinationPointerHi Hi byte of the VRAM destination pointer
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zp Zp1A BytecodeStreamPointerLo Lo byte of the token-stream pointer, loaded from the $8CEF table
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zp Zp1B BytecodeStreamPointerHi Hi byte of the token-stream pointer
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zp Zp1C BytecodeHandlerPointerLo Lo byte of the handler address consumed by jmp ($001C)
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zp Zp1D BytecodeHandlerPointerHi Hi byte of the handler address consumed by jmp ($001C)
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zp Zp1E ActorIndex Active player/actor slot (0 or 1) used as an array index
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zp Zp21 ActorSlotOffset ActorIndex*4; byte offset into the per-actor record arrays
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zp Zp22 ActorSlotOffsetHi High half of the per-actor record offset
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zp Zp23 ActorFieldOffset Second per-actor offset used by the bytecode handlers
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zp Zp24 FrameCounterLo Low byte of the 16-bit frame counter, incremented once per NMI
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zp Zp25 FrameCounterHi High byte of the 16-bit frame counter
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zp Zp26 PlayerSpriteIndex1 Per-player sprite slot table, first plane
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zp Zp27 PlayerSpriteIndex2 Per-player sprite slot table, second plane
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zp Zp28 PlayerSpriteIndex3 Per-player sprite slot table, third plane
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zp Zp29 PlayerSpriteIndex4 Per-player sprite slot table, fourth plane
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zp Zp2A PlayerPaletteIndex Per-player palette slot table
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zp Zp2B PlayerTileIndex Per-player tile slot table
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zp Zp34 ActorPosXLo Per-actor 16-bit X scratch, written by the bytecode handlers
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zp Zp35 ActorPosXHi Per-actor 16-bit X scratch, high byte
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zp Zp36 ActorPosY Per-actor Y scratch
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zp Zp3A PlayerPosXLo1 Player 1 X position, low byte
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zp Zp3C PlayerPosYLo1 Player 1 Y position, low byte
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zp Zp3E PlayerPosXLo2 Player 2 X position, low byte
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zp Zp40 PlayerPosYLo2 Player 2 Y position, low byte
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zp Zp41 ScriptFlags Script state byte selected by the bytecode SelectActorSlot handlers
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zp Zp43 ScriptCounterA Per-actor bytecode counter A
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zp Zp44 ScriptCounterB Per-actor bytecode counter B
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zp Zp45 ScriptCounterC Per-actor bytecode counter C
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zp Zp47 ScriptArgLo Per-actor bytecode argument, low byte
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zp Zp48 ScriptArgHi Per-actor bytecode argument, high byte
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zp Zp4D ScriptFlagsLo Low byte of the 16-bit script flag pair
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zp Zp4E ScriptFlagsHi High byte; tested non-zero to gate several bytecode handlers
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zp Zp65 ActionCooldown Frames to wait before the main loop resumes object updates
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zp Zp68 ScreenTransitionState 0 = idle, negative = entering, positive = leaving
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zp Zp6E PlayerBoxOriginX Player 1 hitbox origin used by the overlap test
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zp Zp70 PlayerBoxOriginY Player 1 hitbox origin used by the overlap test
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zp Zp78 PlayerActiveFlag Per-player "still alive / facing right" flag gating the overlap test
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zp Zp80 SoundVolume1 APU channel 1 volume
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zp Zp81 SoundVolume2 APU channel 2 volume
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zp Zp82 SoundVolume3 APU channel 3 volume
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zp Zp83 SoundVolume4 APU channel 4 volume
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zp Zp8B PlayerFlashTimer Per-player damage-flash countdown
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zp Zp8C PlayerFlashTimer2 Per-player damage-flash countdown, second half
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zp Zp8D RoundTransitionTimer Decremented by the round-transition state
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zp Zp91 PlayerPaletteIndexLo Low byte of the player palette index pair
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zp Zp92 PlayerPaletteIndexHi High byte of the player palette index pair
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zp Zp94 PlayerCount 0 = one player, 1 = two players
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zp Zp96 SubModeFlag $FF entering a sub-mode, $01 leaving it, 0 idle
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zp ZpC4 SoundEnvelopeMode1 APU channel 1 envelope/tone mode nibble
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zp ZpC5 SoundEnvelopeMode2 APU channel 2 envelope/tone mode nibble
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zp ZpC6 SoundEnvelopeMode3 APU channel 3 envelope/tone mode nibble
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zp ZpC7 SoundEnvelopeMode4 APU channel 4 envelope/tone mode nibble
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zp ZpC8 SoundNoteTimer1 APU channel 1 note duration countdown
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zp ZpC9 SoundNoteTimer2 APU channel 2 note duration countdown
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zp ZpCA SoundNoteTimer3 APU channel 3 note duration countdown
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zp ZpCB SoundNoteTimer4 APU channel 4 note duration countdown
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zp ZpCC SoundEnvelopeValue1 APU channel 1 envelope byte read from the sequence
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zp ZpCD SoundEnvelopeValue2 APU channel 2 envelope byte read from the sequence
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zp ZpCE SoundEnvelopeValue3 APU channel 3 envelope byte read from the sequence
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zp ZpCF SoundEnvelopeValue4 APU channel 4 envelope byte read from the sequence
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zp ZpD0 SoundChannelStep1 APU channel 1 step index into its note table
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zp ZpD1 SoundChannelStep2 APU channel 2 step index into its note table
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zp ZpD2 SoundChannelStep3 APU channel 3 step index into its note table
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zp ZpD3 SoundChannelStep4 APU channel 4 step index into its note table
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zp ZpD4 SoundSequencePtrLo1 APU channel 1 sequence pointer, low byte
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zp ZpD5 SoundSequencePtrLo2 APU channel 2 sequence pointer, low byte
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zp ZpD6 SoundSequencePtrLo3 APU channel 3 sequence pointer, low byte
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zp ZpD7 SoundSequencePtrLo4 APU channel 4 sequence pointer, low byte
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zp ZpD8 SoundSequencePtrHi1 APU channel 1 sequence pointer, high byte
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zp ZpD9 SoundSequencePtrHi2 APU channel 2 sequence pointer, high byte
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zp ZpDA SoundSequencePtrHi3 APU channel 3 sequence pointer, high byte
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zp ZpDB SoundSequencePtrHi4 APU channel 4 sequence pointer, high byte
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zp ZpDC SoundSustainCounter1 APU channel 1 sustain/release counter
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zp ZpDD SoundSustainCounter2 APU channel 2 sustain/release counter
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zp ZpDE SoundSustainCounter3 APU channel 3 sustain/release counter
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zp ZpDF SoundSustainCounter4 APU channel 4 sustain/release counter
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zp ZpE0 SoundLastCtrlWrite1 Last value written to $4000+4*channel, channel 1
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zp ZpE1 SoundLastCtrlWrite2 Last value written to $4000+4*channel, channel 2
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zp ZpE2 SoundLastCtrlWrite3 Last value written to $4000+4*channel, channel 3
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zp ZpE3 SoundLastCtrlWrite4 Last value written to $4000+4*channel, channel 4
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zp ZpE4 ApuRegisterOffset Channel*4, the offset added to $4000/$4001/$4002/$4003
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zp ZpE8 ApuEnableMask Bit mask of currently enabled APU channels
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zp ZpE9 SoundMuted Bit 7 set suppresses writes to $4015 (write during rendering)
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zp ZpEA SoundTonePeriodLo Computed tone period, low byte
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zp ZpEB SoundTonePeriodHi Computed tone period, high byte
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zp ZpEC SoundEnvelopeMaskLo Computed envelope bits OR-ed into $4000, low part
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zp ZpED SoundEnvelopeMaskHi Computed envelope bits OR-ed into $4000, high part
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zp ZpEE SoundReadPointerLo Lo byte of the sound sequence read cursor
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zp ZpEF SoundReadPointerHi Hi byte of the sound sequence read cursor
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zp ZpF0 PlayerActionState Per-player action/animation state byte ($80..$FF)
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zp ZpF1 PlayerActionState2 Per-player second action state byte
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zp ZpF2 ControllerButtonMask Filtered button bits for this read, per player
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zp ZpF3 ControllerButtonMask2 Filtered button bits, second player
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zp ZpF4 ControllerButtonsPrev Previous read's button byte, for edge detection
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zp ZpF5 ControllerButtonsPrev2 Previous read's button byte, second player
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zp ZpF6 ControllerDPad1 Directional bits derived from the button byte
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zp ZpF7 ControllerDPad2 Directional bits derived from the button byte
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zp ZpF8 ControllerFaceButtons1 Face-button bits derived from the button byte
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zp ZpF9 ControllerFaceButtons2 Face-button bits derived from the button byte
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zp ZpFA ControllerButtons1 Raw button byte for player 1 (shadows $4010/$4011 at reset)
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zp ZpFB ControllerButtons2 Raw button byte for player 2 (shadows $4010/$4011 at reset)
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zp ZpFC PpuCtrlShadow Shadow of the last value written to $2000
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zp ZpFD PpuMaskShadow Shadow of the last value written to $2001
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zp ZpFE PpuScrollX Shadow of the first $2005 write
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zp ZpFF PpuScrollY Shadow of the second $2005 write
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zp Zp14 VramBlockCountLo Low byte of the 16-bit block counter advanced by AdvanceCountWord
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zp Zp15 CollisionFlagBits Accumulator for the overlap bit flags OR-ed together by ComputePlayerOverlapBits
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