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FujiNet Go

FujiNet Go Desktop

Sega Master System

Six Master System and Mark III consoles with FujiNet on the cartridge port.

FujiNet Go SMS v0.5.0 Released November 2, 2026 Sega, 1986

Download and install Source code

Screenshots

GNOME

The FujiNet CONFIG client browsing network hosts from the console
The debugger's VDP tab: registers, name table and CRAM
Preferences: console, BIOS, display and audio

KDE

The FujiNet CONFIG client browsing network hosts from the console
The debugger's VDP tab: registers, name table and CRAM
Preferences: console, BIOS, display and audio

Windows

FujiNet CONFIG on the Master System, on Windows
The debugger's VDP tab: registers, name table and CRAM
Settings: console, BIOS, picture, audio and input

Features

  • SMS and SMS II (NTSC and PAL), Japanese SMS with FM sound, and the Mark III with its FM unit
  • .sms and .sg cartridges up to 1 MB, across the common mappers
  • Controllers window with remapping; hot-plugged gamepads
  • Debugger with Prompt, CPU, Disassembly, VDP, Sound & I/O, Breakpoints and Cart tabs
  • FujiNet CONFIG browses network hosts straight from the console
  • FujiNet web UI in your browser, or switch to an external FujiNet

BIOS ROMs

Optional

CONFIG and FujiNet apps run without a BIOS. A real BIOS adds the Sega boot screen and runs the few games that need it.

FileWhat it isCRC32Needed
mpr-10052.rom SMS BIOS (US/Europe) 0072ED54 Optional
mpr-12808.ic2 SMS II BIOS CF4A09EA Optional
mpr-11124.ic2 Japanese SMS BIOS 48D44A13 Optional
ym2413_instruments.bin FM sound instrument table 6F582D01 Optional

How to add them: Machine ▸ Import BIOS… matches files by size and CRC against MAME's sms set.

Download and install

FujiNet Go SMS 0.5.0, 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.sms.gnome

Windows

Installer Recommended

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

Download fujinet-go-sms-0.5.0-windows-setup.exe

6.3 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 SMS from the Start menu.

Portable zip

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

Download fujinet-go-sms-0.5.0-windows.zip

8.0 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

macOS 13.3 or later. Pick the build for your Mac's chip.

Apple silicon fujinet-go-sms-0.5.0-macos-arm64.zip · 5.8 MB Intel fujinet-go-sms-0.5.0-macos-x86_64.zip · 5.7 MB
  1. Open the downloaded zip and drag FujiNet Go SMS 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 SMS.app"
Every file in this release, with SHA-256 checksums
FileForSizeSHA-256
online.fujinet.go.sms.gnome.flatpak Linux · GNOME · Flatpak bundle 5.0 MB 5bbb16055dfca5e73b02d42506ac51621529d9c13c35351f6d1fa95bfc27beaa
online.fujinet.go.sms.kde.flatpak Linux · KDE · Flatpak bundle 4.9 MB d2ac86bad44ec2d222b3d86af6fe7d097d99cf8e0c95c9f9020439d3cd1c8320
fujinet-go-sms-gnome-0.5.0-Linux.deb Linux · GNOME · .deb 5.2 MB ed1824d96770c359cce156f3d0d8b8be95b7dc1471ae6668bb207dd26a6ea86a
fujinet-go-sms-kde-0.5.0-Linux.deb Linux · KDE · .deb 5.3 MB b199c7a4b21bb8d9a4c5ed06e85477ebfa0c5132e0100ee6671f749afa17c866
fujinet-go-sms-gnome-0.5.0-Linux.rpm Linux · GNOME · .rpm 4.4 MB 98f7190d961ea765a6e6a55e7a1c9922f6d880aa78a30bc05afb7b80229cbf83
fujinet-go-sms-kde-0.5.0-Linux.rpm Linux · KDE · .rpm 4.5 MB c297a2caf098545391761477f0505daf61cf1183b88464f2b6fd5107e147b039
fujinet-go-sms-gnome-0.5.0-Linux.tar.gz Linux · GNOME · .tar.gz 5.2 MB 1a09b00c4fb51ab6d393658158556ccca60e43d1fb98657f5dbf2d000976011f
fujinet-go-sms-kde-0.5.0-Linux.tar.gz Linux · KDE · .tar.gz 5.3 MB 728e5d1a9e38d0db2e7f95a9439bd1201000d483274f8bc0bd8d28bbce8782d2
fujinet-go-sms-0.5.0-windows-setup.exe Windows installer 6.3 MB f38f1491d9516aed9a0953a20493e612d6bffe2c466c95a4acdab287363b38f6
fujinet-go-sms-0.5.0-windows.zip Windows portable zip 8.0 MB b2df6dcfb08f6fda877b69d234230cc92ec9a1e052c75c44ac2bfaf02c1ff847
fujinet-go-sms-0.5.0-macos-arm64.zip macOS · Apple silicon 5.8 MB 513838ec23bff22aeb78f3656d2cfcf4f4919a40026a4e1b59b2a9e45983fdcc
fujinet-go-sms-0.5.0-macos-x86_64.zip macOS · Intel 5.7 MB b8d8528cbda0545e9bd6b6a002a3bca64c1e1733d9293529577e6e529c80586e

Built on

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

  • MAME (sms, 315-5124 VDP, SN76496, FM unit) BSD-3-Clause

    Machine drivers, rewritten in C. The MAME team

  • ymfm BSD-3-Clause

    YM2413 FM synthesis. Aaron Giles

  • floooh/chips z80.h Zlib

    Z80 CPU. Andre Weissflog

  • 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