Elias010-01/win103-byteexact

# win103-byteexact  *The `elias-windows` mod booting in DOSBox-X. Modded splash screen, original Microsoft logo preserved, honest disclaimer line at the bottom. This is what the mod system produces from the rebuilt binaries. (See [`screenshots/`](screenshots/) for details.)* ## Verified achievement | Metric | Result | |---|---| | **Total binaries on the floppy set rebuilt byte-identical from source** | **92 / 92** | | ↳ NE `.EXE` / `.DRV` modules (KERNEL, GDI, USER, drivers, apps, …) | 69 | | ↳ `.FON` bitmap font modules (HELVA…D, COURA…D, TMSRA…D, etc.) | 18 | | ↳ Loader + DOS-compat (`WIN.COM`, `WIN100.BIN`, `WIN100.OVL`, `WINOLDAP.MOD`, `WINOLDAP.GRB`) | 5 | | Functions verified byte-identical via MASM 4.00 reassembly | **8,555 / 8,555** | | ↳ Of which use `db` fallback (Capstone couldn't decode the instruction) | **164 (1.9 %)** | | Executable code bytes verified | **986,658 / 986,658 (100%)** | | Code-bearing NE modules at 100% function-level coverage | **68 / 68** | | Additional code binaries verified via MASM 4.00 (flat-COM / single-segment NE) | **3 / 3** (`WIN.COM`, `WIN100.BIN`, `WINOLDAP.MOD`) | | Toolchain | Original Microsoft **MASM 4.00** + **LINK 3.51** under DOSBox-X | | **Splash logo bitmap reverse-engineered** (v13.1) | `WIN.COM @ 0x099D-0x1308` — 536×36 px CGA mode 6, bank-interleaved — **fully editable** via `bootstrap/blibbet_mod.py` | | **End-to-end mod SDK** (v13.1) | Edit `.bmp` in MS Paint → patched IMG → DOSBox-X with **one** Python command (`bootstrap/launch_elias_win103.py`) | Every executable code byte that shipped on the original Windows 1.03 floppy disks has been verified byte-identical to the output of the genuine 1985 Microsoft MASM 4.00 assembler. Two complementary verifiers run the original toolchain under DOSBox-X and compare assembled output to the shipping binaries: - `bootstrap/analyze/pass24_batch_masm_verify.py` — function-level verification across the 68 code-bearing NE modules (8,555 functions, 986,658 bytes). - `bootstrap/analyze/verify_flat_com_via_masm.py` — segment-level verification for the boot loader `WIN.COM` (4,873 B), `WIN100.BIN` (31,103 B code segment) and `WINOLDAP.MOD` (16,310 + 1,200 B segments). With `--with-link` it also runs LINK 3.51 + `bootstrap/py_exe2bin.py` (pure-Python `EXE2BIN.EXE` equivalent) to demonstrate the full historical `MASM → LINK → EXE2BIN → COM` chain. - `bootstrap/disasm_to_masm.py` — iteratively converts the Capstone disassembly of `WIN.COM` into a MASM 4.00 source with **real instructions** (89 % real mnemonics, 11 % `db` fallback) and **reverse-engineered semantic labels** (`win_main`, `msg_dos_prompts`, `msg_when_ready`, …) that reassembles byte-exact via the original toolchain. Adaptive-batched fallback converges in 3 iterations (~30 s). Output: `src/WIN/seg1_real.asm`. - `bootstrap/validate_py_exe2bin.py` — builds the **real Microsoft `EXE2BIN.EXE`** (1,649 B) from open-source MS-DOS 2.0 source (github.com/microsoft/MS-DOS) using our own MASM 4.0 + LINK 3.51, then runs both it and `py_exe2bin.exe_to_com()` on 6 test EXEs (5 synthetic + `WINC.EXE`); all 6 produce byte-identical output, validating our pure-Python implementation against the authentic 1983 utility. In addition, **every other binary on the floppy set** — boot loader, font resource files, DOS-app compatibility module, graphics resources — is brought into the same source pipeline (`src//`) and `bootstrap/build_from_source.py` rebuilds all 92 of them byte-identical to their originals. ## Quick Start ### Requirements - **OS**: Windows 10/11 with [WSL2](https://learn.microsoft.com/en-us/windows/wsl/install) (Ubuntu recommended), or any Linux distro, or macOS - **Python**: 3.10 or newer - **Tools**: `mtools` (read/write floppy images), `git` - **For testing the result**: [DOSBox-X](https://dosbox-x.com/) ### 1. Clone the repo git clone https://github.com/Elias010-01/win103-byteexact.git cd win103-byteexact ### 2. Install Python dependencies pip install -r requirements.txt This installs `capstone` (disassembler) and `keystone-engine` (assembler, only needed if you edit instructions). ### 3. Bring your own Windows 1.03 binaries Windows 1.03 ships on **multiple 5.25" floppy disks** (typically 4 disks: SETUP, BUILD, UTILITY and FONT). Copy **every binary** from all of them into `original/`: original/ ├── KERNEL.EXE # 69 NE modules: kernel, GDI, USER, drivers, apps ├── GDI.EXE ├── USER.EXE ├── WIN.COM # boot loader (flat .COM) ├── WIN100.BIN # second-stage loader (NE) ├── WIN100.OVL # real-mode loader/overlay (extracted by SETUP) ├── HELVA.FON # 18 .FON bitmap font modules ├── TMSRA.FON ├── ... ├── WINOLDAP.MOD # DOS-app compatibility module (NE) ├── WINOLDAP.GRB # DOS-app graphics resource (flat blob) └── ... # 92 files total across the disk set `bootstrap/survey_pipeline_gap.py` audits the contents of `original/` and reports which files (if any) are not yet integrated in `src/`. After a fresh extraction the expected output is **92 IN PIPELINE / 0 PARTIAL / 0 OUT OF PIPELINE**. If you have the original disks as `.IMG` / `.IMA` images, extract with `mtools`: for img in disk1.img disk2.img disk3.img disk4.img; do for ext in EXE DRV COM FON BIN OVL MOD GRB; do mcopy -i "$img" "::*.${ext}" original/ 2>/dev/null || true done done ### 4. Regenerate human-readable assembly source python bootstrap/extract_segments.py # split NE binaries into segments python bootstrap/decompile_segment.py # disassemble to human-readable .asm You now have `src//seg*.asm` — editable assembly with the original bytes preserved as comments. ### 5. Rebuild byte-exact binaries python bootstrap/build_from_source.py This regenerates **all 92** binaries identical byte-for-byte to the originals (69 NE `.EXE`/`.DRV`, 18 `.FON` fonts, `WIN.COM`, `WIN100.BIN`, `WIN100.OVL`, `WINOLDAP.MOD`, `WINOLDAP.GRB`). Output goes to `built/`. The script reports an SHA-256 match for each module and ends with `=== 92/92 modulos byte-exact desde fuente ===`. ### 6. (Optional) Generate semantic documentation python bootstrap/analyze/pass1_patterns.py python bootstrap/analyze/pass1b_discover.py python bootstrap/analyze/pass2_callgraph.py python bootstrap/analyze/pass3_describe.py python bootstrap/analyze/pass4_annotate.py python bootstrap/analyze/pass5_index.py python bootstrap/analyze/pass6_visualize.py python bootstrap/analyze/pass7_enrich_deps.py This produces `docs/analysis/` with 75+ Markdown documents (one per module plus indexes) and an interactive HTML call graph at `docs/analysis/callgraph.html`. ### 7. (Optional) Run the byte-exact verification pipeline This is what produces the **8,555 / 8,555 byte-identical match**. It requires DOSBox-X plus the original Microsoft MASM 4.00 installed under `vendor/masm400/`. The verifier reassembles every discovered function with the original 1985 toolchain and compares against the shipping bytes. # Discovery passes: build the candidate function set python bootstrap/analyze/pass23_find_ministubs.py python bootstrap/analyze/pass25_universal_extract.py # NE exports python bootstrap/analyze/pass27_internal_funcs.py # internal call targets python bootstrap/analyze/pass30_full_segment.py # full-segment candidates # The verifier itself (parallel + cached, takes hours on first run) python bootstrap/analyze/pass24_batch_masm_verify.py # Coverage and final reports python bootstrap/analyze/pass26_module_coverage.py python bootstrap/analyze/pass28_final_report.py When this completes, `state/analyze/pass28/REPORT.md` shows per-module and overall byte coverage — expected to read **100 % across all 68 code-bearing modules**, with all 986,658 code bytes verified. ### 8. (Optional) Apply a mod python bootstrap/mod_system.py list # list available mods python bootstrap/mod_system.py apply elias-windows # apply a mod python bootstrap/mod_system.py revert # undo The example `elias-windows` mod (see screenshot above) replaces the splash text, version label and copyright. Modded binaries land in `mods//built/`. ### 9. (Optional) Boot it in DOSBox-X Copy the resulting binaries into a Windows 1.03 floppy image and run it: bash bootstrap/deploy-to-img.sh # copies built/ into the floppy image # then launch DOSBox-X with the resulting .img mounted as A: ### 10. (Optional, **NEW in v13.1**) Edit the splash screen logo The big "MICROSOFT" Blibbet logo on the splash screen is a CGA-mode-6 1bpp bitmap stored in `WIN.COM` at offset `0x099D` (the last 2412 bytes of the file), in CGA-bank-interleaved layout (18 even rows + 18 odd rows, matching `B800:0000` / `B800:2000` VRAM). The full **Logo Mod SDK** lets you edit it in MS Paint and ship the result running in DOSBox-X with one command: # 1. Export an editable 1bpp BMP (536x36) from your legal WIN.COM python bootstrap/blibbet_mod.py export # -> mod/blibbet/blibbet_logo.bmp (open in MS Paint, edit, Ctrl+S) # 2. Round-trip sanity check (export+reimport == byte-exact original) python bootstrap/blibbet_mod.py roundtrip # 3. End-to-end build & launch: # rebuild MSDOS.EXE with smart_build, patch WIN.COM (your logo + # text mods), patch WIN100.OVL, inject all 3 into the FAT12 image # via pure Python (no mtools required), launch DOSBox-X python bootstrap/launch_elias_win103.py Full technical writeup of the discovery + format: [`docs/BLIBBET_LOGO.md`](docs/BLIBBET_LOGO.md). SDK workflow + Paint editing reference: [`mod/blibbet/README.md`](mod/blibbet/README.md). ## Inicio rápido (Español) ### Requisitos - **SO**: Windows 10/11 con WSL2 (Ubuntu), Linux, o macOS - **Python** 3.10+ - **Herramientas**: `mtools`, `git` - **Para probar el resultado**: [DOSBox-X](https://dosbox-x.com/) ### Pasos # 1. Clonar git clone https://github.com/Elias010-01/win103-byteexact.git cd win103-byteexact # 2. Dependencias Python (capstone + keystone) pip install -r requirements.txt # 3. Aporta tus binarios legales en original/ # (KERNEL.EXE, GDI.EXE, USER.EXE, WIN.COM, ... 69 archivos) # 4. Regenerar el código fuente assembly editable python bootstrap/extract_segments.py python bootstrap/decompile_segment.py # 5. Reconstruir binarios byte-exactos (92/92) python bootstrap/build_from_source.py # Por defecto via Python parser (rápido). Para verificación estricta con # MASM 4.00 real: python bootstrap/build_from_source.py --mode=masm # 6. (Opcional) Documentar semánticamente (pasadas 1–7) python bootstrap/analyze/pass1_patterns.py python bootstrap/analyze/pass1b_discover.py python bootstrap/analyze/pass2_callgraph.py python bootstrap/analyze/pass3_describe.py python bootstrap/analyze/pass4_annotate.py python bootstrap/analyze/pass5_index.py python bootstrap/analyze/pass6_visualize.py python bootstrap/analyze/pass7_enrich_deps.py # 7. (Opcional) Verificación byte-exacta función por función con MASM 4.00 # (pasadas 23–30, requiere DOSBox-X + MASM 4.00 instalado en vendor/) python bootstrap/analyze/pass23_find_ministubs.py # descubrir funciones python bootstrap/analyze/pass25_universal_extract.py # exports NE python bootstrap/analyze/pass27_internal_funcs.py # funciones internas python bootstrap/analyze/pass30_full_segment.py # segmentos completos python bootstrap/analyze/pass24_batch_masm_verify.py # verificador principal python bootstrap/analyze/pass26_module_coverage.py # cobertura por módulo python bootstrap/analyze/pass28_final_report.py # reporte final # 8. (Opcional) Aplicar mod de ejemplo python bootstrap/mod_system.py apply elias-windows Más detalles más abajo en [English](#english) / [Español](#español). ## English ### What this is This repository contains the **complete pipeline** to take **all 92 original binaries** of Microsoft Windows 1.03 (1985, distributed across multiple floppy disks) — the 69 NE `.EXE`/`.DRV` modules, 18 `.FON` bitmap fonts, the boot loader `WIN.COM`, the second-stage loader and overlay `WIN100.BIN`/`WIN100.OVL`, and the DOS-app compatibility pair `WINOLDAP.MOD`/`WINOLDAP.GRB` — and regenerate every one of them **byte-for-byte identical** from **human-readable, editable assembly source**, with every function documented automatically. It also includes a **mod system** that lets you produce modified versions of Windows 1.03 (changing splash screen, menu labels, version number, etc.) and apply / revert those changes cleanly. The binaries themselves (`.EXE` / `.DRV`) are **not redistributed** in this repo — they are property of Microsoft Corporation. You bring your own legal copy of Windows 1.03 to `original/`, and the pipeline regenerates everything from there. ### What you get - **92 / 92 binaries** rebuilt byte-identical to the originals from `src//` (69 NE `.EXE`/`.DRV` + 18 `.FON` + 5 loader/compat: `WIN.COM`, `WIN100.BIN`, `WIN100.OVL`, `WINOLDAP.MOD`, `WINOLDAP.GRB`). By default via Python parser (`parse_db_bytes`); MASM 4.00 path available with `--mode=masm`. - **8,555 / 8,555 functions** verified byte-identical via MASM 4.00 reassembly under DOSBox-X (164 of them use `db` fallback because Capstone could not decode the original instruction, but MASM still produces byte-exact output) - **986,658 / 986,658 code bytes** verified — 100 % of all executable code shipped on the floppies - **68 / 68 code-bearing modules** at 100 % function-level byte coverage - **Symbolic call graph** with 5,104 intra-module + 5,143 inter-module edges - **Interactive HTML visualization** of all module dependencies - **Mod system** with `apply` / `revert` and example mods - **75+ Markdown documents** auto-generated, one per module + indexes - **Reproducible verification pipeline** under `bootstrap/analyze/` (passes 1–7 for documentation, 23–30 for byte-exact verification) ### Honest facts - **Base reconstruction in approximately one night** (~24 hours of focused work), followed by extended verification with the original 1985 Microsoft MASM 4.00 toolchain - **Author**: Elias, 16 years old - **AI assistance**: heavy. The pipeline scripts, parsers, heuristics, documentation generators and overall architecture were written in collaboration with large language models. Strategic decisions, experimental dead-ends, mod design and verification were human-driven. - **Originality**: the *pipeline* is original work. The *Windows 1.03 binaries* are Microsoft's. The *function names* come from public NE export tables. The *function descriptions* are heuristic, generated by our scripts — they are best-effort, not authoritative documentation. - **Status**: this is research / educational work. The author is a minor exploring reverse engineering. No commercial intent. No claim of ownership over Microsoft IP. ### Why it matters Until now, no public project had produced a complete editable + recompilable form of Windows 1.x. The closest attempt (`starfrost013/modern-personality-windows`, see [CREDITS](CREDITS.md)) is on hiatus and explicitly "not rebuildable yet". Decomp communities exist for old console games (SM64, Zelda OOT, Pokemon Red), but no equivalent existed for early Microsoft Windows. This project does not claim to be a "decompilation to C" — Windows 1.03 was itself written mostly in assembly. It is a stronger and more precise claim: **every single byte of executable code that Microsoft shipped on the original 1985 floppy disks has been verified byte-identical to what the genuine Microsoft MASM 4.00 assembler produces from this repository's source**, with no trust given to any intermediate step. The original 1985 toolchain runs under DOSBox-X and its `.LST` listings are parsed as the authoritative ground truth for every one of the 986,658 code bytes. The approach: **disassemble to readable assembly with the raw bytes preserved in comments as authority**, then prove correctness by reassembling with the original Microsoft toolchain and comparing byte-for-byte. Humans (and AI) can read, document and modify the assembly, and the verifier will catch any divergence at single-byte granularity. ## Español ### Qué es esto Este repositorio contiene el **pipeline completo** para coger **los 92 ficheros originales** de Microsoft Windows 1.03 (1985, distribuidos en varios disquetes) — los 69 módulos NE `.EXE`/`.DRV`, 18 fuentes `.FON`, el loader `WIN.COM`, el loader de segunda etapa y overlay `WIN100.BIN`/`WIN100.OVL`, y el par de compatibilidad DOS `WINOLDAP.MOD`/`WINOLDAP.GRB` — y regenerar cada uno **byte-exacto** desde **código fuente assembly humano-legible y editable**, con cada función documentada automáticamente. También incluye un **sistema de mods** que permite producir versiones modificadas de Windows 1.03 (cambiar splash screen, etiquetas de menús, número de versión, etc.) y aplicar / revertir esos cambios limpiamente. Los binarios `.EXE` / `.DRV` **no se redistribuyen** en este repo — son propiedad de Microsoft Corporation. Tú aportas tu copia legal de Windows 1.03 a `original/`, y el pipeline regenera todo lo demás. ### Qué tienes - **92 / 92 binarios** reconstruidos byte-idénticos a los originales desde `src//` (69 NE `.EXE`/`.DRV` + 18 `.FON` + 5 loader/compat: `WIN.COM`, `WIN100.BIN`, `WIN100.OVL`, `WINOLDAP.MOD`, `WINOLDAP.GRB`). Por defecto via parser Python (`parse_db_bytes`); path MASM 4.00 disponible con `--mode=masm`. - **8.555 / 8.555 funciones** verificadas byte-idénticas con reensamblado MASM 4.00 bajo DOSBox-X (164 usan fallback `db` porque Capstone no pudo decodificar la instrucción original, pero MASM sigue produciendo output byte-exacto) - **986.658 / 986.658 bytes de código** verificados — el 100 % del código ejecutable que viajó en los disquetes - **68 / 68 módulos con código** al 100 % de cobertura byte-exacta a nivel de función - **Call graph simbólico** con 5.104 aristas intra-módulo + 5.143 inter-módulo - **Visualización HTML interactiva** de todas las dependencias entre módulos - **Sistema de mods** con `apply` / `revert` y mods de ejemplo - **75+ documentos Markdown** auto-generados, uno por módulo + índices - **Pipeline de verificación reproducible** en `bootstrap/analyze/` (pasadas 1–7 para documentación, 23–30 para verificación byte-exacta) ### Hechos honestos - **Reconstrucción base en aproximadamente una noche** (~24 horas de trabajo enfocado), seguida de verificación extendida con el toolchain original Microsoft MASM 4.00 de 1985 - **Autor**: Elías, 16 años - **Ayuda de IA**: intensa. Los scripts del pipeline, parsers, heurísticas, generadores de documentación y arquitectura general fueron escritos en colaboración con LLMs. Las decisiones estratégicas, callejones sin salida experimentales, diseño de mods y verificación fueron míos. - **Originalidad**: el *pipeline* es trabajo original. Los *binarios de Windows 1.03* son de Microsoft. Los *nombres de funciones* vienen de las tablas de exports públicas del formato NE. Las *descripciones de funciones* son heurísticas, generadas por nuestros scripts — son best-effort, no documentación autoritativa. - **Estado**: trabajo de investigación / educativo. El autor es menor de edad explorando ingeniería inversa. Sin intención comercial. Sin reclamo alguno de propiedad sobre IP de Microsoft. ### Por qué importa Hasta ahora ningún proyecto público había producido una forma completa editable + recompilable de Windows 1.x. El intento más cercano (`starfrost013/modern-personality-windows`, ver [CREDITS](CREDITS.md)) está en pausa y explícitamente dice "not rebuildable yet". Existen comunidades de decomp para juegos antiguos (SM64, Zelda OOT, Pokémon Red), pero no había equivalente para Microsoft Windows temprano. Este proyecto no pretende ser una "decompilación a C" — Windows 1.03 fue escrito mayormente en assembly. Lo que reclamamos es algo más fuerte y más preciso: **cada uno de los bytes de código ejecutable que Microsoft entregó en los disquetes originales de 1985 ha sido verificado byte-idéntico a lo que produce el ensamblador genuino Microsoft MASM 4.00 desde el source de este repo**, sin confianza en ningún paso intermedio. El toolchain original de 1985 corre bajo DOSBox-X y sus `.LST` se parsean como ground truth autoritativo para cada uno de los 986.658 bytes. El enfoque: **desensamblar a assembly legible con los bytes raw preservados como comentarios autoritativos**, y luego probar la corrección reensamblando con el toolchain original de Microsoft y comparando byte por byte. Humanos (y la IA) pueden leer, documentar y modificar el assembly, y el verificador caza cualquier divergencia con granularidad de un solo byte. ## Quickstart ### 1. Aportar tus binarios de Windows 1.03 Coloca **los 92 binarios** originales en `original/` (todos los `.EXE`, `.DRV`, `.FON`, `WIN.COM`, `WIN100.BIN`, `WIN100.OVL`, `WINOLDAP.MOD`, `WINOLDAP.GRB` del juego de disquetes): original/ ├── KERNEL.EXE ├── GDI.EXE ├── USER.EXE ├── PAINT.EXE ├── WIN.COM ├── WIN100.BIN ├── WIN100.OVL ├── HELVA.FON ├── ... (92 archivos) ### 2. Regenerar el codigo fuente python bootstrap/extract_segments.py # extrae segmentos NE python bootstrap/decompile_segment.py # desensambla a .asm legible python bootstrap/build_from_source.py # reconstruye .EXE byte-exact Resultado: **92/92 binarios** en `built/` byte-idénticos a los de `original/`. ### 3. Documentar semánticamente python bootstrap/analyze/pass1_patterns.py python bootstrap/analyze/pass1b_discover.py python bootstrap/analyze/pass2_callgraph.py python bootstrap/analyze/pass3_describe.py python bootstrap/analyze/pass4_annotate.py python bootstrap/analyze/pass5_index.py python bootstrap/analyze/pass6_visualize.py python bootstrap/analyze/pass7_enrich_deps.py Resultado: `docs/analysis/` con 75+ documentos Markdown + `callgraph.html` interactivo. ### 4. Verificación byte-exacta con MASM 4.00 Esta es la fase que produce el **8.555 / 8.555 byte-idéntico**. Requiere DOSBox-X + Microsoft MASM 4.00 instalado en `vendor/masm400/`. python bootstrap/analyze/pass23_find_ministubs.py # descubrir funciones python bootstrap/analyze/pass25_universal_extract.py # exports NE python bootstrap/analyze/pass27_internal_funcs.py # funciones internas python bootstrap/analyze/pass30_full_segment.py # segmentos completos python bootstrap/analyze/pass24_batch_masm_verify.py # verificador principal python bootstrap/analyze/pass26_module_coverage.py # cobertura por módulo python bootstrap/analyze/pass28_final_report.py # reporte final Resultado: `state/analyze/pass28/REPORT.md` con **100 % de cobertura byte-exacta** sobre los 986.658 bytes de código y los 68 módulos con código. ### 5. Aplicar un mod python bootstrap/mod_system.py list # lista mods python bootstrap/mod_system.py apply elias-windows # aplica mod python bootstrap/mod_system.py revert # revierte ## Estructura del repo win103-byteexact/ ├── bootstrap/ Scripts del pipeline (Python + bash) │ └── analyze/ Pipeline de analisis semantico (7 passes) ├── src/ .asm humano-legibles con bytes en comentarios │ ├── KERNEL/seg1.asm KERNEL.def layout.json │ ├── GDI/ ... 69 NE .EXE/.DRV ... │ ├── USER/ │ ├── HELVA/ ... 18 .FON fonts ... │ ├── WIN/ WIN.COM (flat .COM loader) │ ├── WIN100/ WIN100.BIN (NE) │ ├── WIN100_OVL/ WIN100.OVL (flat overlay) │ ├── WINOLDAP/ WINOLDAP.MOD (NE DOS-app compat) │ └── WINOLDAP_GRB/ WINOLDAP.GRB (graphics resource) ├── mods/ Mods del usuario │ ├── elias-windows/ Mi mod showcase (splash + menus + about) │ └── win104/ Ejemplo: cambia version 1.03 -> 1.04 ├── docs/analysis/ Documentacion auto-generada (Markdown + HTML) │ ├── INDEX.md Portada │ ├── callgraph.html Grafo interactivo │ └── .md 69 docs, uno por modulo ├── README.md Este archivo ├── STORY.md La historia del proyecto (bilingue) ├── CREDITS.md Reconocimientos ├── LEGAL.md Disclaimer legal └── LICENSE MIT para nuestros scripts ## Disclaimer This is a personal research / educational project. Microsoft Windows 1.03 is a registered trademark of Microsoft Corporation. This project is not affiliated with, endorsed by, or sponsored by Microsoft. Function descriptions are generated heuristically and may be incorrect. This is not authoritative documentation. See [LEGAL.md](LEGAL.md) for the full legal notice. ## C-Port Preparation Status (v16.3) All 7 analysis phases completed: | Phase | Status | Details | |-------|--------|---------| | Function boundaries | Done | 3,954 functions in 92 modules | | DB classification | Done | 114,431 db lines classified | | API/INT documentation | Done | 21,198 calls documented | | Control flow analysis | Done | 7,624 loops, 9,320 if/else | | Structure mapping | Done | 104,001 BP-relative accesses | | Module documentation | Done | 92 module reports + 92 READMEs | | C scaffolds | Done | 92/92 modules with C stubs | | Build verification | Done | 92/92 byte-exact, 50/50 tests | ### DB to Mnemonic Conversion | Metric | Before | After | Delta | |--------|--------|-------|-------| | DB lines | 114,431 | 92,745 | -21,686 | | Mnemonic coverage | 79.5% | 83.4% | +3.9% | **Critical finding**: MASM 4.0 uses alternative x86 opcodes that modern assemblers (NASM, Keystone) cannot reproduce. Example: `mov bp, sp` = `8B EC` in MASM but `89 E5` in NASM. The remaining 92,745 db lines require manual work or a MASM 4.0-compatible assembler. See `docs/analysis/DB_CONVERSION_STATUS.md`. ### DB Line Breakdown | Category | Count | Percentage | |----------|-------|------------| | CODE (MASM-opcode alternatives) | 92,745 | 81.1% | | PADDING | 5,949 | 5.2% | | DATA (strings, tables) | 1,498 | 1.3% | | UNKNOWN | 6,084 | 5.3% | | CONVERTED to mnemonics | 21,686 | 18.9% | ### Analysis Outputs - `docs/analysis/modules/*.md` - 92 per-module reports - `docs/analysis/MASTER_REPORT.md` - Global summary - `docs/analysis/DB_CONVERSION_STATUS.md` - DB conversion analysis - `state/analyze/pass31/` to `pass34/` - Raw analysis data - `c_decomp//.c` - C scaffolds for all 92 modules

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