# The Oregon Trail: mapping the Apple II disks, programs and data formats

> The Oregon Trail investigation maps the two disk sides of the Apple II game from their bytes. It documents the DOS 3.3 layout, sector-addressed loader, Applesoft programs, machine-language commands, saved variables, picture packing and music files, with Python readers and recorded outputs.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/vs-sr-dev/apple2-theoregontrail-doc>
- Primary source: <https://github.com/vs-sr-dev/apple2-theoregontrail-doc/blob/71057794f334bc2df56df99281c89eed482ec98e/README.md>
- Catalog page: <https://awesomerea.org/resources/apple2-theoregontrail-doc-case/>
- Record JSON: <https://awesomerea.org/resources/apple2-theoregontrail-doc-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/apple2-theoregontrail-doc-case/index.md)

## Requirements & limits

- **Prerequisites:** Users supply the two Apple II .do disk images; game bytes are not included.
- **Prerequisites:** The tools run with Python 3; PNG rendering additionally needs PIL.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/vs-sr-dev/apple2-theoregontrail-doc/blob/71057794f334bc2df56df99281c89eed482ec98e/README.md>
2. <https://github.com/vs-sr-dev/apple2-theoregontrail-doc/blob/71057794f334bc2df56df99281c89eed482ec98e/docs/02-the-technical-sheet.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.