Why this core
Every line below is backed by a commit, a test, or a merged PR. The right column is the receipt.
Claims and receipts
| What | Backed by |
|---|---|
| Every platform RetroArch runs on. 16 CI-built targets per release, plus handhelds via the buildbot. | release.yml |
| RetroAchievements. Memory maps and achievement support, asserted in CI. | test_memory_map.c · test_rcheevos_e2e.sh |
| Run-ahead, rewind and netplay determinism. A harness replays RetroArch's rollback loop and demands byte-identical state. | PR #327 · test_runahead_determinism.c |
| Old savestates keep loading. Every format any released core wrote still loads. Exactly, not best-effort. | savestate-compat.md · v3.1.0 notes |
| Frontend features come with RetroArch. CRT shaders, remapping, fast-forward, per-game overrides. The core does not reimplement any of it. | libretro.c |
| Documented in the libretro docs. Where a libretro user would look for it. No BIOS files needed. | docs.libretro.com · core options · README: BIOS |
| The peripherals, not just the controller. Jaguar CD in both boot modes, JagLink and CatBox, the Voice Modem, GameDrive, Memory Track, mouse, rotary, analog, driving, lightgun. | front page · compatibility data |
| Hardware-referenced accuracy. Checked against the Jaguar Technical Reference Manual, not against source comments. An acid suite gates CI. | test/acid · v3.0.0 notes |
| Open source. GPLv3. Every fix links to its PR and its test. | licence · source |
One comparative claim
We know of no other Jaguar emulator with a true-colour mode or with in-core internal-resolution supersampling. Both shipped, covering blits, scaled sprites and every direct video mode as of v3.3.0.
That is the only claim on this site made about anyone else's work. If it is wrong, say so in Discussions and this page gets corrected.
Found something broken
Discussions for reports, Issues for confirmed bugs. Attach your frontend log: the crash watchdog writes the failure signature into it.