CDL re-trace: 1942 (JU) 46.6%, Galaga (U) 32.3% (Pass 2/3 complete)

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

NROM/Othello (U)/README.md

@@ -2,66 +2,85 @@
 
 ## Status
 
-**Pass 3.** Hardware-register operands use `symbols.inc` names
-(`apply_symbols.py`: 0 unexplained residue); zero-page slots keep their
-documented `ZpXX` names with ref counts in `locals.inc`; data tables remain
-classified with ROM provenance. `make` stays byte-identical.
-
-`make` assembles `header.s`, `prg.s`, `chr.s`, links them with `ld65` and compares the
-result against `rom.nes`:
-
-```
-Byte-identical ROM verified.
-```
+**Pass 3 complete; promoted.** `prg.s` is a traced disassembly with all
+address-derived labels replaced, all `jsr`/`jmp` operands symbolic, hardware
+registers named via `symbols.inc`, and `apply_symbols.py` reporting 0 residue.
+Code coverage: 14,220 / 32,768 bytes (43.4%).
+`make` assembles and verifies byte-identical to `rom.nes`.
 
 ## ROM
 
 | Property | Value |
 |----------|-------|
 | Format | iNES |
-| Mapper | 0 |
-| Board | NROM-256 |
+| Mapper | 0 (NROM) |
+| PRG | 32 KB |
+| CHR | 8 KB |
 | Mirroring | Horizontal |
-| Four-screen VRAM | no |
-| Battery | no |
-| PRG | 32 KB (2 x 16 KB), mapped at CPU $8000-$FFFF |
-| CHR | 8 KB (1 x 8 KB) |
-| Trainer | none |
-| Footer | none |
 | NMI vector | $D6B4 |
 | RESET vector | $8000 |
 | IRQ vector | $804E |
-| ROM file | `Othello (U).nes` |
-| SHA-256 | `5b580ee1be7ae8a4b6a47088390912b3139162b138a2ceea5201b70f6afbc3c9` |
 
-### Header notes
+## Power-on flow
 
-- none
+RESET enters at `$8000`:
 
-## Open work
+    sei                            ; CPU:$8000 PRG:0000  78
+    lda #$00                       ; CPU:$8001 PRG:0001  A9 00
+    sta PPUCTRL                    ; CPU:$8003 PRG:0003  8D 00 20
+    sta PPUMASK                    ; CPU:$8006 PRG:0006  8D 01 20
+    lda PPUSTATUS                  ; CPU:$8009 PRG:0009  AD 02 20
+    bpl Reset_OnNonnegative        ; CPU:$800C PRG:000C  10 FB
+    lda PPUSTATUS                  ; CPU:$800E PRG:000E  AD 02 20
+    bmi Reset_OnNegative           ; CPU:$8011 PRG:0011  30 FB
+    lda PPUSTATUS                  ; CPU:$8013 PRG:0013  AD 02 20
+    bpl Reset_OnNonnegative2       ; CPU:$8016 PRG:0016  10 FB
+    lda PPUSTATUS                  ; CPU:$8018 PRG:0018  AD 02 20
+    bmi Reset_OnNegative2          ; CPU:$801B PRG:001B  30 FB
 
-- **Pass 1** - run `nesdis.py` over `prg.bin` to produce the code/data
-  split. The tracer reads the vectors from the last six bytes of the PRG
-  image, so the split seeds correctly.
-- **Pass 1** must emit the canonical audit comment
-  `; CPU:$C123 PRG:0123  AD 21 03` at column 35 for every instruction.
-- **Pass 2** - replace the address-derived `Label_XXXX` names and the raw
-  `$XXXX` call operands.
-- **Pass 3** - semantic zero-page aliases (applied only at the sites where
-  their role is proven) and named data tables.
-- **Promotion** to `NROM/<name>/` once Pass 3 is done, as `git mv`.
+NMI handler at `$D6B4`:
 
-## Files
+    pha                            ; CPU:$D6B4 PRG:56B4  48
+    txa                            ; CPU:$D6B5 PRG:56B5  8A
+    pha                            ; CPU:$D6B6 PRG:56B6  48
+    tya                            ; CPU:$D6B7 PRG:56B7  98
+    pha                            ; CPU:$D6B8 PRG:56B8  48
+    lda #$00                       ; CPU:$D6B9 PRG:56B9  A9 00
+    sta OAMADDR                    ; CPU:$D6BB PRG:56BB  8D 03 20
+    lda #$02                       ; CPU:$D6BE PRG:56BE  A9 02
 
-| File | Purpose |
-|------|---------|
-| `prg.s` | Pass 0 PRG include (replaced by the Pass 1 disassembly) |
-| `header.s` | iNES header include |
-| `chr.s` | CHR include |
-| `prg.bin` | 32768 bytes (32 KB) PRG image |
-| `chr.bin` | 8192 bytes (8 KB) CHR image |
-| `rom.nes` | byte-identical copy of the original ROM |
-| `linker.cfg` | HEADER / PRG / CHR memory areas |
-| `symbols.inc` | NES hardware register names |
-| `locals.inc` | zero-page aliases (empty at Pass 0) |
-| `Makefile` | build and byte-identity check |
+## Data-table inventory (Pass 3)
+
+- `$8350-$8367` (24 bytes) - `BoardCellParameterTable`
+- `$851E-$854D` (48 bytes) - `PlayerColorNameTable`
+- `$8661-$8699` (57 bytes) - `GameModeNameTable`
+- `$884A-$888A` (65 bytes) - `BoardCellNameTable`
+- `$8B57-$8B66` (16 bytes) - `SlotGameText`
+- `$8C80-$8C8B` (12 bytes) - `PushBButtonText`
+- `$9003-$9012` (16 bytes) - `BoardMoveOffsetTable`
+- `$92BF-$9336` (120 bytes) - `BoardCellCharsetTable`
+- `$9555-$9561` (13 bytes) - `VsScreenLayoutTable`
+- `$95AD-$95D6` (42 bytes) - `VsScreenLayoutTable2`
+- `$9784-$97C3` (64 bytes) - `VsScreenLayoutTable3`
+- `$98E0-$98F0` (17 bytes) - `PushAButtonText`
+- `$9967-$997D` (23 bytes) - `CannotCancelText`
+- `$999B-$99AB` (17 bytes) - `AgainstLevelText`
+- `$99C7-$99D9` (19 bytes) - `TryAgainText`
+- `$99E6-$99FF` (26 bytes) - `WinsDrawText`
+- `$9A09-$9A34` (44 bytes) - `StopPushText`
+- `$9AD7-$9BAF` (217 bytes) - `HurryGameEndText`
+- `$9FA6-$9FAD` (8 bytes) - `BoardEdgeGraphic`
+- `$A263-$A29F` (61 bytes) - `PlayerStartPositionTable`
+- `$A3E9-$A3F8` (16 bytes) - `BoardFlipMaskTable`
+- `$ABDB-$ABE2` (8 bytes) - `BoardStateBitsTable`
+- `$AD3E-$AD53` (22 bytes) - `BoardCellWeightTable`
+- `$AF00-$AF97` (152 bytes) - `RandomSeedTable`
+- `$BCCE-$D6A3` (6614 bytes) - `BoardTilemapData`
+- `$DA49-$DA60` (24 bytes) - `ControllerButtonNames`
+- `$DD5F-$FFFF` (8865 bytes) - `LevelGraphicData`
+
+## Build
+
+```
+Byte-identical ROM verified.
+```