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RustyNES: update for v3.0.0 (UNIF, core options, background, four players) - #1215
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Adds .unf/.unif, marks Core Options supported (Four Score), describes the one-clock scheduler that replaced the lockstep model, and lists the four input-descriptor ports the core declares. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014qfTKi2M3swo7qnwvYCkDj
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What changed in this PR
Updates the RustyNES core documentation page to align with the v3.0.0 release and the core’s .info metadata (extensions, features, background timing model, and controller descriptors).
Changes:
- Updated Background section to describe the current scheduler (master clock, split CPU cycles, PPU catch-up).
- Added UNIF-related extensions (
.unf,.unif) to the supported content list. - Marked Core Options as supported and expanded input descriptors to “User 1 - 4”.
| File | Description |
|---|---|
| docs/library/rustynes.md | Updates core capabilities and descriptive text to match v3.0.0/.info (UNIF extensions, Core Options, timing model, four-player descriptors). |
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| ## Background | ||
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| RustyNES is a cycle-accurate Nintendo Entertainment System (NES) and Famicom emulator written entirely in pure Rust. It targets the highest accuracy bar (comparable to Mesen and higan) through strict lockstep timing at PPU-dot resolution, without relying on threading or standard library timing. | ||
| RustyNES is a cycle-accurate Nintendo Entertainment System (NES) and Famicom emulator written entirely in pure Rust. It targets the highest accuracy bar (comparable to Mesen and higan) by running from one master clock, splitting every CPU cycle into two halves and bringing the PPU up to date at each, rather than relying on per-game hacks. |
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Still true at v3.0.0, so restored in e2173d0: the emulation core uses no threads and no standard-library timing (the chip crates build as no_std), so its output depends only on the ROM and the input.
Updates the RustyNES core page for the v3.0.0 release, matching the core's
.info(submitted alongside to libretro-super):.unf/.unif(UNIF loading since v2.8.1)License, BIOS and the rest of the features table are unchanged and match the core.
Release: https://github.com/doublegate/RustyNES/releases/tag/v3.0.0