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FujiNet Go

FujiNet Go Desktop

TRS-80 Color Computer

The Tandy Color Computer 2 and 3, with FujiNet on the Becker port.

FujiNet Go CoCo v0.6.0 Released November 2, 2026 Tandy, 1980

Download and install Source code Also on Android

Screenshots

GNOME

FujiNet CONFIG running on the emulated Color Computer
The 6809 debugger: disassembly, registers, memory and the video pane
Preferences: machine, video and FujiNet

KDE

FujiNet CONFIG running on the emulated Color Computer
The 6809 debugger: disassembly, registers, memory and the video pane
Settings: aspect ratio, scaling and FujiNet

Windows

FujiNet CONFIG on the Color Computer, on Windows
The 6809 debugger: disassembly, registers, memory and the video pane
Settings: aspect ratio, scaling and FujiNet

Features

  • XRoar, with FujiNet as a DriveWire server on the Becker port
  • CoCo 2 and CoCo 3, 6809 or HD6309, switchable while running
  • Media: .dsk, .os9 and .vdk disks, .cas and .wav tapes, .rom and .ccc cartridges
  • FujiNet web UI built into the app
  • Debugger: CMOC C source stepping, LWASM symbols, a video pane and a DriveWire tab
  • Use the built-in FujiNet or an external one

BIOS ROMs

Required

HDB-DOS is built in, but Tandy's BASIC ROMs are not. Import them once.

  • Built in: HDB-DOS DW3 (hdbdw3bck.rom, hdbdw3bc3.rom), freely redistributable
FileWhat it isCRC32Needed
bas13.rom Color BASIC 1.3 (CoCo 2) (8 KB) D8F4D15E Required
extbas11.rom Extended Color BASIC 1.1 (CoCo 2) (8 KB) A82A6254 Required
coco3.rom CoCo 3 ROM (32 KB) B4C88D6C Required

How to add them: Machine ▸ Import BIOS… or Import BIOS from a Folder…, also on the No CoCo BIOS page and in Preferences ▸ ROMs. MAME's coco and coco3 zips work.

Where to get them

Download and install

FujiNet Go CoCo 0.6.0, released November 2, 2026. Release notes

Linux

Desktop
Package

Install with Flatpak (any distribution)

  1. Install Flatpak with your distribution's package manager if you don't have it yet.
  2. Add Flathub, which supplies the runtime, and the FujiNet Go repository: 
    flatpak remote-add --user --if-not-exists flathub \
    https://dl.flathub.org/repo/flathub.flatpakrepo
flatpak remote-add --user --if-not-exists fujinet-go \
    https://fujinetwifi.github.io/fujinet-go-desktop-flatpaks/fujinet-go.flatpakrepo
  3. Install the GNOME edition (or swap gnome for kde): 
    flatpak install --user fujinet-go online.fujinet.go.coco.gnome

Windows

Installer Recommended

Windows 10 or 11, 64-bit. Installs for your user only and needs no administrator rights.

Download fujinet-go-coco-0.6.0-windows-setup.exe

6.7 MB

  1. Run the downloaded file.
  2. If Windows SmartScreen says it protected your PC, choose More info, then Run anyway. The app isn't code-signed yet.
  3. Start FujiNet Go CoCo from the Start menu.

Portable zip

Nothing to install. Good for a USB stick or a locked-down PC.

Download fujinet-go-coco-0.6.0-windows.zip

8.1 MB

  1. Right-click the zip, choose Extract All…, and pick a folder.
  2. Open the folder and run the .exe inside.

macOS

macOS app

For Macs with Apple silicon (M1 and later).

Apple silicon fujinet-go-coco-0.6.0-macos.zip · 5.8 MB
  1. Open the downloaded zip and drag FujiNet Go CoCo into Applications.
  2. The first time, Control-click the app and choose Open, then Open again. (On macOS 15 and later: try to open it, then go to System Settings ▸ Privacy & Security and choose Open Anyway.)
  3. Or clear the download quarantine in Terminal: 
    xattr -dr com.apple.quarantine "/Applications/FujiNet Go CoCo.app"
Every file in this release, with SHA-256 checksums
FileForSizeSHA-256
online.fujinet.go.coco.gnome.flatpak Linux · GNOME · Flatpak bundle 4.6 MB b0d83447991ebbd0d218fb587307fcf1d62ff40106d8c2387e07163f079ad0aa
online.fujinet.go.coco.kde.flatpak Linux · KDE · Flatpak bundle 3.6 MB 475f5c4d5e0c5f60d1719f51dfb0104221a1a89ed5de148e1073749e0a5fbf6f
fujinet-go-coco-gnome-0.6.0-Linux.deb Linux · GNOME · .deb 3.6 MB 085316edd5d73ca9d8f546a8f6df4f2e3021d17d73f7dfe97ae29d10abf41992
fujinet-go-coco-kde-0.6.0-Linux.deb Linux · KDE · .deb 3.7 MB 10220f70a41f2c6623d33f748cba71e9ea27fd775cd18b0364f5eac0237b5da7
fujinet-go-coco-gnome-0.6.0-Linux.rpm Linux · GNOME · .rpm 3.1 MB 8cbeebd8af3df3054c09ef3dfc4ce131f7855ff16978a46f7cc511f3237db9e5
fujinet-go-coco-kde-0.6.0-Linux.rpm Linux · KDE · .rpm 3.2 MB bf932ba6e5eec6816839c3a20946a34420e5c86ba3ae4e2878c367090e987e3f
fujinet-go-coco-gnome-0.6.0-Linux.tar.gz Linux · GNOME · .tar.gz 3.6 MB cff5a001a2d424fb2e7dcc97194717e714f573d623477bb15f5be8abf9ef27e7
fujinet-go-coco-kde-0.6.0-Linux.tar.gz Linux · KDE · .tar.gz 3.7 MB 25da38072182360cb6d17dce438a1c202c7688b0a9fa964f282381b28a75f68c
fujinet-go-coco-0.6.0-windows-setup.exe Windows installer 6.7 MB 8bd80d9e2f660c6215f83ca16d53bfb4e38a627b785b3b14b7cfddff402398bf
fujinet-go-coco-0.6.0-windows.zip Windows portable zip 8.1 MB 905f6ebbbc408784d164c9e67b4ad18e20a8e95c3b037a6ff0c895cc02263af6
fujinet-go-coco-0.6.0-macos.zip macOS · Apple silicon 5.8 MB bb5b29c2f13d8d64557da30f8a9899c9769ff33a221dfd140d8ca546222badab

Built on

FujiNet Go CoCo is free software (GPL-3.0). It stands on these projects:

  • XRoar 1.11 GPL-3.0-or-later

    Emulator core. Ciaran Anscomb

  • HDB-DOS Freely redistributable

    DriveWire disk BASIC. Cloud-9

  • TRE (libsystre, Windows only) BSD-2-Clause

    Regular expressions. Ville Laurikari

  • fujinet-firmware GPL-3.0-or-later

    The FujiNet itself, built into every app. Thomas Cherryhomes and the FujiNet contributors

  • Mbed TLS Apache-2.0

    TLS for FujiNet's network protocols. The Mbed TLS contributors

  • libssh, libsmb2, libnfs LGPL-2.1-or-later

    FujiNet's SSH, SMB and NFS protocols. Their respective authors

  • cJSON, expat MIT

    JSON and XML parsing in FujiNet. Dave Gamble; the Expat maintainers

  • SDL 3 Zlib

    Video, audio and gamepads. Sam Lantinga and the SDL contributors

  • GTK 4 and libadwaita LGPL-2.1-or-later

    The GNOME edition's interface. The GNOME project

  • Qt 6 LGPL-3.0-only

    The KDE edition's interface. The Qt Company and contributors

The full list of bundled code, versions and licences is in COMPLIANCE.md. Source code · All releases · Report a problem