# tgm2p-decomp: matching The Grand Master 2 Plus SH-2 code

> tgm2p-decomp reconstructs the SH-2 program of Tetris: The Absolute – The Grand Master 2 Plus as C compiled with Hitachi SHC. Its probes compare instructions and literal pools with the arcade ROM, and its build checks linked code against a user-supplied verified ROM set.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/masonc15/tgm2p-decomp>
- Primary source: <https://github.com/masonc15/tgm2p-decomp/blob/da60906a9a73b0288dc77cf9bbe8c69af205e7cc/README.md>
- Catalog page: <https://awesomerea.org/resources/tgm2p-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/tgm2p-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/tgm2p-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** A verified tgm2p arcade ROM set containing 2b.u21 and 1b.u22 is required.
- **Prerequisites:** Hitachi SHC v5.0 and the documented local toolchain are required.
- **Limits:** Full matching remains incomplete.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/masonc15/tgm2p-decomp/blob/da60906a9a73b0288dc77cf9bbe8c69af205e7cc/README.md>

## More in Games

- [TH04: rebuilding Lotus Land Story’s four PC-98 programs from source](https://awesomerea.org/resources/th04-reconstruction-case/index.md) · Case study
- [TH05: reconstructing Touhou 5's PC-98 programs](https://awesomerea.org/resources/th05-reconstruction-case/index.md) · Case study
- [th06: an independently matching Touhou 6 decompilation](https://awesomerea.org/resources/cirno-labs-th06-case/index.md) · Case study
- [TH06: reconstructing Japanese 1.02h authored functions](https://awesomerea.org/resources/th06-strict-reconstruction-case/index.md) · Case study
- [th07: reconstructing Touhou 7 retail 1.00b](https://awesomerea.org/resources/cirno-th07-case/index.md) · Case study
- [TH08: exact-source reconstruction and separately tested ports](https://awesomerea.org/resources/th08-reconstruction-case/index.md) · Case study

## 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.