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gsasm

Clean-room Python reimplementation of the MPW IIgs assembler, linker, resource compiler and packagers, checked byte-for-byte against shipped Apple IIgs ROM and GS/OS builds.

Clean-room Not stated wip
Source code
Stars12
Commits, 30 days0
Latest release—
Last pushAug 22, 2026

GitHub figures as of 2026-10-18, refreshed daily.

Facts

Original
Apple MPW IIgs cross-development tools
Platform
Classic Mac OS
Method
Clean-room
Provenance
Not stated what this means
Status
wip
Licence
MIT
Team
emdeejay
Started
2026-06
Runs on
Windows, Linux, macOS
Needs the original
No

How to get it legally

Download it from the official repository. No original files are needed.

This project was rebuilt clean-room by emdeejay. Facts last checked 2026-10-17. Suggest a correction

Sources

Something wrong or out of date? Send a correction.

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