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X65_BigMiST

An open-source retro SBC built on the W65C816 CPU, using WIZnet W6100 to add hardwired TCP/IP Ethernet connectivity.

Grace_Koo

Published May 13, 2026

Original author: Maverick-SharkOriginal source (new tab)

X65_BigMiST

Components

Hardware components

Project description

Adding Ethernet to a Retro Computer — The Open-Source 8/16-bit SBC X65, Powered by W6100 An open-source single-board computer (SBC) running a real 1980s-era 8/16-bit CPU, extended with Ethernet connectivity using the WIZnet W6100. The X65 is a project that pairs a 6502-family CPU — the same kind found in vintage game consoles and home computers — with modern components to build a fully functional machine from scratch. Video, audio, storage, and networking are all integrated on a single board, with every design file and line of source code publicly available under the MIT license. Networking…

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