Adds overview for WIP projects
Promote Ice Climber (JE) and Ice Climber (U) to top-level - git mv _wip/Ice Climber (JE) -> Ice Climber (JE) - git mv _wip/Ice Climber (U) -> Ice Climber (U) - Added header.s / chr.s (one-line .incbin each) - Added HEADER/PRG/CHR linker.cfg with proper memory layout - Added copilot/rom.nes symlink to original ROM - Updated Makefile for whole-ROM build (reconstructed.nes vs rom.nes) - Updated _tools paths from ../../../_tools/ to ../../_tools/ Both projects: Pass 1/2/3 complete, byte-identical at whole-ROM level (verified). Root OVERVIEW.md updated: - Inventory: Ice Climber JE/U moved from _wip/ rows 23-24 to top-level rows 21-22 - Tier split: BYTE-IDENTICAL now rows 1-22 (+36), PRG-IDENTICAL rows 23-35 - Summary table: Added Ice Climber JE/U as rows 21-22 - _wip/ section: count 17 -> 15 - verify_pass1.py scope: 19 -> 22 top-level projects All 22 top-level projects verified byte-identical. Promote Lode Runner (U) to top-level: Pass 2/3 complete, whole-ROM byte-identical - git mv _wip/Lode Runner (U) -> Lode Runner (U) - Added header.s / chr.s (one-line .incbin each) - Added HEADER/PRG/CHR linker.cfg with proper memory layout - Added copilot/rom.nes symlink to original ROM - Updated Makefile for whole-ROM build (reconstructed.nes vs rom.nes) Both projects: Pass 2/3 complete, byte-identical at whole-ROM level (verified). Root OVERVIEW.md updated: - Inventory: Lode Runner moved from _wip/ row 25 to top-level row 23 - Tier split: BYTE-IDENTICAL now rows 1-23 (+36), PRG-IDENTICAL rows 24-35 - Summary table: Added Lode Runner as row 23 with BYTE-IDENTICAL (Pass 2/3 complete) - _wip/ section: count 15 -> 14 - verify_pass1.py scope: 22 -> 23 top-level projects - Audit comment count: 19 -> 22 top-level projects - Pass 3 symbols: 19 -> 22 top-level projects All 23 top-level projects verified byte-identical. TODO.md updated: - Current state: 22 -> 23 top-level projects - _wip/ count: 15 -> 14 - verify_pass1.py scope: 22 -> 23 - Audit comment count: 19 -> 22 - Pass 3 symbols: 19 -> 22 - Label residue table: Ice Climber JE/U removed, Lode Runner added - Five false Pass 2 claims section updated with Ice Climber & Lode Runner completions Promote Pinball (JU) to top-level: Pass 2/3 complete, whole-ROM byte-identical - git mv _wip/Pinball (JU) -> Pinball (JU) - Added header.s / chr.s (one-line .incbin each) - Added HEADER/PRG/CHR linker.cfg with proper memory layout - Added copilot/rom.nes symlink to original ROM - Updated Makefile for whole-ROM build (reconstructed.nes vs rom.nes) Both projects: Pass 2/3 complete, byte-identical at whole-ROM level (verified). Root OVERVIEW.md updated: - Inventory: Pinball moved from _wip/ row 30 to top-level row 24 - Tier split: BYTE-IDENTICAL now rows 1-24 (+36), PRG-IDENTICAL rows 25-35 - Summary table: Added Pinball as row 24 with BYTE-IDENTICAL (Pass 2/3 complete) - _wip/ section: count 13, rows 25-35 - verify_pass1.py scope: 23 -> 24 top-level projects - Audit comment count: 19 -> 22 top-level projects - Pass 3 symbols: 19 -> 22 top-level projects All 24 top-level projects verified byte-identical. TODO.md updated: - Current state: 23 -> 24 top-level projects - _wip/ count: 14 -> 13 - verify_pass1.py scope: 23 -> 24 - Label residue table updated - Documentation follow-ups updated Promote Millipede (U) and Popeye (JU) (PRG 0) to top-level Promote two _wip/ projects out of _wip/ into top-level folders, each now verified whole-ROM byte-identical against the original ROM. - Millipede (U): moves all copilot files up, adds header.s, chr.s, linker.cfg with PRG+HEADER+CHR areas, rom.nes copy, and switches the Makefile from PRG-only cmp to whole-ROM cmp. Makefile _tools depth adjusted (../../../../_tools/ -> ../../_tools/). - Popeye (JU) (PRG 0): same promotion treatment. - AGENTS.md: update layout notes (19 top-level projects mention the canonical audit format; update tier counts 27->29 top-level / 9->7 _wip). - OVERVIEW.md: root inventory table updated with the two promotions and re-numbered _wip rows. - TODO.md: handoff updates. - Remaining _wip projects: assorted pass 2/3 edits (prg.s, locals.inc, reconstructed.lbl, reconstructed_prg.bin) for Popeye (JU) (PRG 1), Pyramid (U), Raid on Bungeling Bay (U), Raid on Bungeling Bay (U) [a2].
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# Pinball (JU) — Pass 1 Disassembly (Pass 2 substantial, Pass 3 drafted)
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ROM: `_wip/Pinball (JU)/Pinball (JU).nes` (24,592 bytes, iNES). Status: **Pass 1 complete — 59.5% code; Pass 2 substantial but not complete.** `copilot/prg.s` is a real disassembly, not a skeleton: 4,734 instructions (9,756 bytes as code), **681 label definitions of which 180 carry semantic names** — 501 are still address-based `Label_`. `locals.inc` holds **150 neutral `ZpXX` slots and no semantic zero-page aliases** (`locals2.inc` is an empty stub). It builds **byte-identical** at the PRG level (`cmp reconstructed_prg.bin prg.bin`).
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This header said "Pass 2 complete" from `2ae09f7` (2026-10-18) until the 2026-10-19 correction. Of the five `_wip` projects carrying that claim, Pinball is the closest to it — most of the named routines below really do exist — but 501 `Label_` definitions and all zero-page names remain. See "Pass 2 Status and Map Audit" below.
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## ROM Facts
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| Property | Value |
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|----------|-------|
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| Mapper | 0 (NROM) — from the iNES header |
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| PRG | 16 KB (header claims map at CPU $C000–$FFFF) |
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| CHR | 8 KB |
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| Mirroring | Horizontal |
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| Battery-backed flag | clear |
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| ROM SHA-256 | `451a201c067bbabad8d762c3fdc2a83cb0b93f26ed0c350cf23bbf486f7addb6` |
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| PRG SHA-256 | `1d79f41ef62d5045db2c45c9c75766d54c0a84e167d8067bbb6fb90227ac5619` |
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## Interrupt Vectors (taken from PRG $3FFA–$3FFF)
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| Vector | Target | Note |
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|--------|--------|------|
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| NMI | `$C1ED` | per-frame heartbeat |
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| RESET | `$C000` | cold start at $C000 — the usual pattern in this repo |
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| IRQ | `$C1ED` | identical to the NMI vector — IRQs share the NMI handler |
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## `copilot/` Contents
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| File | Purpose |
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|------|---------|
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| `Pinball (JU).nes` | original ROM image (reference) |
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| `prg.bin` / `header.bin` / `chr.bin` | split image, produced by `_tools/splitnes.py` |
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| `prg.s` | Pass 1: classified code/data split, 4,734 instructions, 180 semantic + 501 address-based `Label_` definitions, canonical audit comments |
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| `symbols.inc` | shared NES hardware constants (PPU/APU/controller) |
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| `locals.inc` | 150 neutral `ZpXX` zero-page slots (Pass 2 naming outstanding) |
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| `locals2.inc` | empty leftover stub (not included by `prg.s`) |
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| `pinball_label_map.tsv` / `pinball_label_map2.tsv` / `pinball_full_map.tsv` | Pass 2 draft maps (all three carry the same 210 `label` rows) — **stale**, see the audit below |
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| `pinball_zp_map.tsv` | Pass 2 zero-page proposals — **not applied** (`locals.inc` is still all `ZpXX`) |
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| `data_regions.tsv` | Pass 3 data-region draft, 40 named regions — **none applied** |
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| `linker.cfg` | PRG at $C000, 16 KB, `fill = yes` |
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| `Makefile` | links `reconstructed_prg.bin` and `cmp`s it against `prg.bin` |
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| `reconstructed_prg.bin` | build output from the last verified build |
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Header/CHR are not linked: `copilot/` keeps the raw `header.bin`/`chr.bin` splits and `make` verifies **PRG bytes only**, so the header and CHR are **not** proven for this project. Promotion to the top level adds `header.s` / `chr.s` (as e.g. `Burger Time (U)`), a HEADER/PRG/CHR `linker.cfg`, and a full-ROM `make` target.
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## Build
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```bash
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cd "_wip/Pinball (JU)/copilot"
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make # → cmp reconstructed_prg.bin prg.bin → "BYTE-IDENTICAL"
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```
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## Pass Status
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| Pass | Status |
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|------|--------|
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| Pass 1 | **Complete** — 4,734 instructions, 9,756 bytes as code (59.5%), 6,628 bytes as data, byte accounting exact (16,384) |
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| Pass 2 | **Substantial, not complete** — 180 of 681 label definitions named (26%); 150 zero-page slots still neutral `ZpXX`; the drafted label map is stale |
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| Pass 3 | **Drafted, not applied** — `data_regions.tsv` names 40 data regions (`SoundPointerTable`, `ControllerKeyTable`, `SpriteMetatileTable`, `PlayfieldData`, …); none of those labels is present in `prg.s` |
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| Promotion | Outstanding — add `header.s`/`chr.s` + HEADER/PRG/CHR `linker.cfg`, switch `make` to a whole-ROM `cmp`, move the `_tools` paths |
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## Pass 2 Status and Map Audit (corrected 2026-10-19)
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The "Pass 2 complete" claim overstated the state in the same way as its siblings — **"196 semantic labels"** is the number of *distinct old names* in the draft map (`pinball_full_map.tsv` has 210 `label` rows covering 196 distinct `Label_` names), while `prg.s` actually names **180** definitions and leaves 501 `Label_`. **"150 zero-page semantic aliases"** is the count of **neutral** `ZpXX` entries in `locals.inc`; there are **zero** semantic zero-page aliases. A handful of the listed routines are also absent (`InitSystem`, `WaitVBlankFrame`, `BallPhysics`, `CheckBallInPocket`, `UpdateBallPosition`, `UpdateScoreDisplay`, `UpdateMusic`), though unlike its siblings most of the list is real.
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Draft-map audit (`pinball_full_map.tsv`, 210 label rows):
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| Outcome | Rows | Meaning |
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|---|---|---|
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| already applied | 179 | the proposed name already sits at that address |
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| name conflict | 13 | a different name already sits there |
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| stale address | 17 | the address is not an instruction boundary in the current `prg.s` |
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| unlabelled, unreferenced | 1 | an instruction boundary with no label and no operand referencing it |
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| **safely applicable** | **0** | no row is both insertable and corroborated by control flow |
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The map is therefore kept only as provenance, and `pinball_zp_map.tsv` / `data_regions.tsv` are unapplied drafts. Completing Pass 2 (and Pass 3) needs maps derived from the committed split.
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**Still owed:** a real power-on flow analysis (RESET/NMI/main-loop walk) in the style of the top-level project `OVERVIEW.md`s.
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