The interface uses EmulatorJS 4.2.3 under GPL-3.0 and a VICE x64sc core under GPL-2.0-or-later. C64 Vault removes the upstream core’s separately copyrighted Commodore firmware bytes, substitutes the pinned LGPL/MIT Open ROMs C64 firmware, removes drive firmware, and runs with true-drive emulation disabled. A disclosed local EmulatorJS patch removes its external version poll; no emulation behavior is changed. Library items retain their own zlib, Apache-2.0, or MIT terms.
- EmulatorJS GPL-3.0 text
- Modified EmulatorJS corresponding source
- C64 Vault patch notice
- EmulatorJS v4.2.3 upstream source
- VICE GPL-2.0-or-later text
- Pinned ROM-stripped VICE source snapshot
- Open ROMs LGPL/MIT notices
- Pinned Open ROMs source snapshot
- Pinned EmulatorJS build scripts
- cc65 zlib text
- High Low Apache-2.0 text
- 8 Bit Island MIT text
- Laser Invaders MIT text
- Machine-readable release manifest
Firmware boundary: the original upstream core archives are retained only in a non-public local quarantine. They are not part of this site’s release.
Last updated: 19 September 2026