概要 ファミコンのエミュレータをJSでだらだらと作ってた。そこそこ遊べるようになったので公開しておく。技術的な内容は、またどこかで発表したり、Qiitaなどにまとめたい。（忘れないうちに。需要があるかは怪しいが。） 随分昔に作ってみたいなーと思いFPGAでの実装を開始したんだけど、早々に挫折した覚えがある。今思うとFPGAの場合タイミングの問題が付き纏うのでJSで書くより圧倒的に難易度も高いし、ハードエミュレータを実装するにしても前段階としてソフトウェミュレータを実装するのが定石っぽいので無謀だったっぽい。 ひとまずMapper0という基本的なカセット形式のみに対応し、スーパーマリオブラザーズがそこそこ遊べるくらいを目標とした。 成果物 github.com ファミコンのスペック MPU 6502(RP2A03), 8bit WRAM2KB VRAM 2KB 最大発色数 52色 画面解像度

Edition RC1 Hey everyone! In accordance with the Rust 2018 release schedule, it’s time for the release of the first release candidate for Rust 2018. To try out Rust 2018 RC1, install the beta toolchain: > rustup install beta > rustc +beta --version rustc 1.30.0-beta.2 (7a0062e46 2018-09-19) This beta of Rust 1.30 is a bit different than a normal beta: it has the feature flags for Rust 2018 turned

// By Daniel Reiter Horn and Jongmin Baek • Jun 19, 2018 Compressing your files is a good way to save space on your hard drive. At Dropbox’s scale, it’s not just a good idea; it is essential. Even a 1% improvement in compression efficiency can make a huge difference. That’s why we conduct research into lossless compression algorithms that are highly tuned for certain classes of files and storage,

The Rust team is happy to announce a new version of Rust, 1.27.0. Rust is a systems programming language focused on safety, speed, and concurrency. If you have a previous version of Rust installed via rustup, getting Rust 1.27.0 is as easy as: rustup update stable If you don't have it already, you can get rustup from the appropriate page on our website, and check out the detailed release notes for

Baby’s First Rust+WebAssembly module: Say hi to JSConf EU! A secret project has been brewing for JSConf EU, and this weekend is the big reveal… The Arch is a larger-than-life experience that uses 30,000 colored LEDs to create a canvas for light animations. And you can take charge of this space. Using modules, you can create a light animation. But even though this is JSConf, these animations aren’t

As Lin Clark emphasizes in her article about Rust and WebAssembly: the goal of WebAssembly is not to replace JavaScript, but to be an awesome tool to use with JavaScript. Lots of amazing work has been done to simplify crossing the language boundary between JavaScript and WebAssembly, and you can read all about that in Alex Crichton’s post on wasm-bindgen. This post focuses on a different type of J

One big 2018 goal for the Rust community is to become a web language. By targeting WebAssembly, Rust can run on the web just like JavaScript. But what does this mean? Does it mean that Rust is trying to replace JavaScript? The answer to that question is no. We don’t expect Rust WebAssembly apps to be written completely in Rust. In fact, we expect the bulk of application code will still be JS, even

Each year the Rust community comes together to set out a roadmap. This year, in addition to the survey, we put out a call for blog posts in December, which resulted in 100 blog posts written over the span of a few weeks. The end result is the recently-merged 2018 roadmap RFC. Rust: 2018 edition This year, we will deliver Rust 2018, marking the first major new edition of Rust since 1.0 (aka Rust 20

The Rust team is happy to announce a new version of Rust, 1.24.0. Rust is a systems programming language focused on safety, speed, and concurrency. If you have a previous version of Rust installed via rustup, getting Rust 1.24.0 is as easy as: $ rustup update stable If you don't have it already, you can get rustup from the appropriate page on our website, and check out the detailed release notes f