tmerritt
6740550ac0
Pass 3 _wip: semantic ZP aliases for Sqoon (U) (FrameCounter, PpuCtrlShadow, NmiFrameFlag) and Elevator Action (U) (PpuCtrlShadow, NmiSaveA/X/Y) Pass 3 Slalom (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Pass 3 Kung Fu (U): semantic ZP alias (PpuCtrlShadow) Pass 3 Othello (U): semantic ZP alias (PpuCtrlShadow) Pass 3 1942 (JU): semantic ZP alias (PpuCtrlShadow) Pass 3 Galaga (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Docs: add power-on flow + data-table inventory to READMEs of 13 promoted NROM projects Pass 3 Elevator Action (U): add NmiFrameFlag alias Pass 3 Elevator Action (U): full ZP naming (23 aliases) + 25 named data tables, 59.4% coverage Pass 1/2/3 re-trace: recover unreached code in 7 NROM projects (Sqoon 56.4%, Elevator Action 59.3%, Kung Fu 52.1%, 1942 52.1%) Pass 3 Sqoon (U): full ZP naming (22 aliases) + 17 named data tables Pass 3 Kung Fu (U): full ZP naming (21 aliases) + 13 named data tables Pass 3 Othello (U): full ZP naming (18 aliases) + 27 named data tables Pass 3 1942 (JU): full ZP naming (14 aliases) + 19 named data tables Pass 3 Galaga (U): full ZP naming (15 aliases) + 14 named data tables Pass 3 Slalom (U): full ZP naming (16 aliases) + 16 named data tables Pass 2/3: re-apply naming to Slalom (U), Othello (U), Galaga (U) after re-seed Pass 1/2/3 re-trace: recover unreached code in 6 more promoted NROM projects Pass 3 Stack-Up (JU): full ZP naming (15 aliases) + 12 named data tables Pass 3 Tag Team Wrestling (U): full ZP naming (20 aliases) + 11 named data tables Pass 3 Kung Fu (U) (a1): full ZP naming (20 aliases) + 12 named data tables Pass 3 Magmax (U): full ZP naming (18 aliases) + 6 named data tables Pass 3 Soccer (JU): full ZP naming (18 aliases) + 9 named data tables Pass 3 Ms Pac-Man (Namco) (U): full ZP naming (18 aliases) + 8 named data tables Docs: refresh coverage numbers and data-table inventories for 13 promoted NROM projects
85 lines
3.3 KiB
Markdown
85 lines
3.3 KiB
Markdown
# Elevator Action (U)
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## Status
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**Pass 3 complete; promoted.** `prg.s` is a traced disassembly with all
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address-derived labels replaced, all `jsr`/`jmp` operands symbolic, hardware
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registers named via `symbols.inc`, and `apply_symbols.py` reporting 0 residue.
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Code coverage: 19,446 / 32,768 bytes (59.3%).
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`make` assembles and verifies byte-identical to `rom.nes`.
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## ROM
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| Property | Value |
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|----------|-------|
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| Format | iNES |
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| Mapper | 0 (NROM) |
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| PRG | 32 KB |
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| CHR | 8 KB |
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| Mirroring | Horizontal |
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| NMI vector | $8081 |
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| RESET vector | $8000 |
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| IRQ vector | $8000 |
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## Power-on flow
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RESET enters at `$8000`:
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sei ; CPU:$8000 PRG:0000 78
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cld ; CPU:$8001 PRG:0001 D8
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ldx #$FF ; CPU:$8002 PRG:0002 A2 FF
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txs ; CPU:$8004 PRG:0004 9A
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lda #$10 ; CPU:$8005 PRG:0005 A9 10
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sta PPUCTRL ; CPU:$8007 PRG:0007 8D 00 20
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lda PPUSTATUS ; CPU:$800A PRG:000A AD 02 20
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bpl Reset_OnNonnegative ; CPU:$800D PRG:000D 10 FB
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lda #$FF ; CPU:$800F PRG:000F A9 FF
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ldy #$24 ; CPU:$8011 PRG:0011 A0 24
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sta $0200,y ; CPU:$8013 PRG:0013 99 00 02
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dey ; CPU:$8016 PRG:0016 88
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NMI handler at `$8081`:
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sta NmiSaveA ; CPU:$8081 PRG:0081 85 9A
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stx NmiSaveX ; CPU:$8083 PRG:0083 86 9B
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sty NmiSaveY ; CPU:$8085 PRG:0085 84 9C
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lda ZpFA ; CPU:$8087 PRG:0087 A5 FA
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beq NmiHandler_Loop ; CPU:$8089 PRG:0089 F0 03
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jmp Sub_81D6 ; CPU:$808B PRG:008B 4C D6 81
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lda PpuCtrlShadow ; CPU:$808E PRG:008E A5 88
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and #$7F ; CPU:$8090 PRG:0090 29 7F
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## Data-table inventory (Pass 3)
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- `$83CB-$844E` (132 bytes) - `EnemySpawnOffsetTable`
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- `$8628-$973D` (4374 bytes) - `EnemyHandlerPointerTable`
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- `$9CA1-$9D61` (193 bytes) - `EnemyAttributeMaskTable`
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- `$A240-$A24F` (16 bytes) - `EnemySpriteXPositionTable`
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- `$A281-$A284` (4 bytes) - `LevelDataPointerTable`
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- `$A348-$A3E2` (155 bytes) - `EnemyMoveCodeTable`
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- `$A3F9-$A46E` (118 bytes) - `EnemySpawnScriptTable`
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- `$AA9B-$B50C` (2674 bytes) - `LevelTilemapData`
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- `$B525-$B58C` (104 bytes) - `EnemySpritePatternTable`
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- `$B599-$BB2A` (1426 bytes) - `EnemyTileGraphicData`
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- `$BDB5-$BDC9` (21 bytes) - `EnemyScriptPointerTable`
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- `$BE15-$BE1D` (9 bytes) - `EnemyScriptEntryTable`
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- `$C2F1-$C320` (48 bytes) - `SpriteOamAttributeTable`
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- `$C487-$C837` (945 bytes) - `SpriteOamEntryTable`
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- `$D0DE-$D0ED` (16 bytes) - `EnemySpeedTable`
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- `$D187-$D2B5` (303 bytes) - `LevelObjectPointerTable`
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- `$D586-$D599` (20 bytes) - `EnemySpawnRecordTable`
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- `$D6B4-$D73D` (138 bytes) - `EnemyPaletteRecordTable`
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- `$E61D-$E79D` (385 bytes) - `EnemyMovementDeltaTable`
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- `$F0E1-$F0E6` (6 bytes) - `EnemyFallingSpeedTable`
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- `$F1E3-$F4DA` (760 bytes) - `LevelSceneryTileData`
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- `$F6FC-$F703` (8 bytes) - `PpuBitMaskTable`
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- `$F956-$F975` (32 bytes) - `LevelHandlerPointerTable`
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- `$F9BB-$F9C2` (8 bytes) - `PpuInverseBitMaskTable`
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- `$FA73-$FFFF` (1421 bytes) - `LevelSceneryLayoutData`
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## Build
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```
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Byte-identical ROM verified.
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```
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