Visual 6502 Simulator Released

A new browser‑based 6502 emulator, dubbed **JSSim**, has been released by the Visual6502 project. Hosted at http://visual6502.org/JSSim/index.html, the simulator lets users write, load, and execute 6502 assembly code directly in a web page without any additional plugins. The interface includes a source editor, a memory viewer, and a step‑by‑step debugger, making it a practical tool for both learning and troubleshooting low‑level code.

JSSim is written entirely in modern JavaScript, leveraging the browser’s native capabilities to provide a responsive debugging experience. It supports loading raw binary files, inspecting registers and memory, and stepping through instructions with visual highlights. The project was highlighted on Hacker News, where it received 14 points and sparked six comments, indicating interest from the retro‑computing and developer communities.

By demonstrating that a full 6502 simulation can run efficiently in the browser, JSSim offers an accessible platform for educators, hobbyists, and software developers alike. Its open‑source nature and straightforward interface make it a valuable resource for anyone looking to experiment with classic 8‑bit architecture in a modern environment.