webassembly

emulation Aug 23, 2026 8 min read

MartyPC: Writing a Cross-Platform, Cycle-Accurate PC Emulator in Rust

MartyPC is a cross-platform Rust emulator focused on 8088-based early PCs like the IBM PC and XT. It emphasizes cycle-accurate CPU timing, detailed peripheral behavior, and time-aware video rendering, with desktop builds for Windows/Linux/macOS and a WebAssembly web version.

by ahsan

#emulation #retrocomputing #rust #webassembly #x86

webassembly runtime internals Jul 25, 2026 8 min read

GC and Exceptions in Wasmtime: What Changed in 47

Wasmtime 47 (released 2026-07-20) enabled both Wasm GC and Wasm exception-handling by default. This post walks through what those proposals change and how Wasmtime implements GC using a Cheney-style semi-space copying collector with a sandboxed heap backed by Wasm linear memory.

by ahsan

#exceptions #garbage collection #wasm gc #wasmtime #webassembly