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FujiNet Go

FujiNet Go

TRS-80 Color Computer

A CoCo 3 or CoCo 2 on Android, with FujiNet as its DriveWire server.

FujiNet Go CoCo v1.0.4 Released September 2, 2026 Tandy, 1980

Download and install Source code Also on Desktop

Screenshots

Phone

FujiNet CONFIG on the CoCo, with the on-screen keyboard
Landscape, full screen
The touch joystick, analog or digital
Settings: machine, display and artifact colours

Tablet

FujiNet CONFIG on a tablet, with the CoCo keyboard either side
The touch joystick on a tablet

Features

  • CoCo 3 by default, switchable to CoCo 2
  • Composite or RGB display, with artifact colour modes
  • On-screen CoCo keyboard, analog joystick and gamepads
  • HDB-DOS through the Becker port (DriveWire over TCP)
  • FujiNet web UI at 127.0.0.1:8002

BIOS ROMs

Required

HDB-DOS is built in, but Tandy's BASIC ROMs are imported on first run.

  • Built in: HDB-DOS DW3, 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: The first-run screen asks for the files and checks them by CRC.

Where to get them

Download and install

FujiNet Go CoCo 1.0.4, released September 2, 2026. Release notes

Phone or tablet

Android 8.0 or later.

Download fujinet-go-coco-v1.0.4.apk

47.3 MB

  1. Open the downloaded APK from your notifications or the Files app.
  2. If Android asks, allow your browser or Files app to install unknown apps, then go back and tap Install.
  3. Start FujiNet Go CoCo. On first run it asks for the BIOS ROMs listed above.

Not on Google Play yet, so updates are installed the same way: download the new APK and install it over the old one.

Chromebook and Android TV

On a Chromebook with Google Play enabled, download the APK and open it from the Files app; ChromeOS installs it like a phone.

This app has an Android TV launcher banner. Install it from a computer with adb after turning on developer options and network debugging on the TV:

adb connect <tv-address>
adb install fujinet-go-coco-v1.0.4.apk

A sideloading app such as Downloader on the TV works too: give it the APK link from this page.

BIOS ROMs on a TV: Android TV has no system file picker, so the first-run ROM screen can't open your files there yet. A phone, tablet or Chromebook can.

Or install from a computer over USB:

adb install fujinet-go-coco-v1.0.4.apk
Every file in this release, with SHA-256 checksums
FileForSizeSHA-256
fujinet-go-coco-v1.0.4.apk Android 47.3 MB f89a5bc2ca87c00a150b7b54609359be5b1e7fbc247b8b1e15e12ab7a9238b74

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

  • 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

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