#c64 #commodore #emulator #resid #sid

resid-rs

Port of reSID, a MOS6581 SID emulator engine, to Rust

18 releases (7 stable)

1.1.1 Aug 7, 2022
1.1.0 Jul 3, 2022
1.0.4 Dec 2, 2019
1.0.3 Jul 5, 2019
0.4.2 Dec 28, 2017

#4 in Emulators

Download history 7/week @ 2022-06-12 24/week @ 2022-06-19 14/week @ 2022-06-26 48/week @ 2022-07-03 29/week @ 2022-07-10 51/week @ 2022-07-17 40/week @ 2022-07-24 53/week @ 2022-07-31 60/week @ 2022-08-07 22/week @ 2022-08-14 53/week @ 2022-08-21 17/week @ 2022-08-28 30/week @ 2022-09-04 42/week @ 2022-09-11 18/week @ 2022-09-18 29/week @ 2022-09-25

126 downloads per month
Used in 5 crates (via zinc64-emu)

GPL-3.0+

415KB
7K SLoC

resid-rs

Build Status Crates.io

Overview

Port of reSID, a MOS6581 SID emulator engine, to Rust.

Story

This project originated from zinc64, a Commodore 64 emulator, around Jan 2017. It evolved to the point where it can be useful to others working on C64 sound/emulation so it is packaged and shipped as a standalone crate.

Usage

Once SID register read/writes are wired up to resid, all that is left to do is to generate audio samples and push them to audio output buffer.

while delta > 0 {
    let (samples, next_delta) = self.resid.sample(delta, &mut buffer[..], 1);
    let mut output = self.sound_buffer.lock().unwrap();
    for i in 0..samples {
        output.write(buffer[i]);
    }
    delta = next_delta;
}

Components

Component Status
Envelope Done
ExternalFilter Done
Filter Done
Sampler Done
Spline Done
Wave Done
Sid Done

Changelog

  • 0.3 - compliance with the original resid
  • 0.4 - full sampler support
  • 0.5 - closed performance gap largely due to resampling
  • 0.6 - SIMD optimization
  • 0.7 - continuous integration and GPLv3
  • 0.8 - documentation and api refinements/internal cleanup
  • 0.9 - migration to Rust 2018
  • 1.0 - no_std support
  • 1.1 - more idiomatic implementation, removes interior mutability and improves support for async rust

Credits

  • Thanks to Dag Lem for his reSID implementation
  • Thanks to Daniel Collin for motivating me to put this out and helping out with code optimization
  • Commodore folks for building an iconic 8-bit machine
  • Rust developers for providing an incredible language to develop in

Dependencies