c64lib Compatibility Notices
The Web64-native c64lib compatibility layer adapts public contracts and selected behavior from c64lib Common, Chipset, Text, Tile2, copper64, Bitmap, Fonts, Gradle Retro Build Tool, 64spec, and Magic Desk CRT at the exact revisions identified in c64lib-compatibility.md and the active c64lib-compatibility-v3.json manifest.
KickAssembler Compatibility Mode additionally bundles 40 verbatim, read-only assembly sources from the lib/ trees of c64lib Common 0.5.1 commit d9b508f62649a9e15d4b3dbee2ae99b3f402bd5e, Chipset 0.5.1 commit e91455ba6f4f87e2d0d4e7604215e52db9e96ee2, Text 0.5.1 commit b5fa872d2a43c1690666444d223603728b346a14, and Copper64 0.6.0 commit 6d4b0920db0b0ddfd42976dc7c9ddc77c766244d. Their canonical paths, SHA-256 hashes, byte sizes, repositories, and licenses are governed by c64lib-kick-bundle-v1.json. Bundled source availability is not a blanket compatibility claim.
The Kick direct-source P0 fixture specifically certifies verbatim lib/mos6510.asm and lib/mos6510-global.asm from the pinned Chipset source. Its source paths, hashes, classifications, and limited compatibility claims remain governed separately by c64lib-kick-direct-v1.json.
MIT License
Copyright (c) 2017-2032 c64lib
Copyright (c) 2017-2025 Maciej Małecki
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Source repositories and exact revisions are listed in Web64-native c64lib Compatibility.
Exomizer 3.1.2
Web64 includes an altered browser-target build and adapted backward P39 6502 decruncher from Exomizer 3.1.2, commit ba91318e02bc0f69e437379a84348d416c4a19aa.
Copyright (c) 2002-2020 Magnus Lind and contributors.
The software is provided as-is, without warranty. Permission is granted to use, alter, and redistribute it for any purpose provided that the origin is not misrepresented, altered versions are plainly marked, and the notice is retained in source distributions. The Exomizer and copyright-holder names may not be used to endorse derived products without prior written permission.
The Web64 module is marked as an altered browser build and is loaded only when an Exomizer processor operation is requested.
GoatTracker evidence
The GTS3-GTS5 and GTI3-GTI5 codecs, command/table mapping, and relocation option contract were verified against the official GoatTracker 2.77 manual, source release, and gt2reloc behavior. Web64 does not bundle or copy GoatTracker's GPL-2.0-or-later executable/source; it implements a separate browser-native semantic codec around W64SID v3.