FujiNet Networking Adapter Brought to NES With Rev0 Cart

Work has begun on bringing the FujiNet network adapter to the NES. A FujiNet Go NES Desktop app already runs the combination in emulation on Linux, Windows and macOS, letting users configure network hosts and load games across several common NES mapper types. On the hardware side, an open Rev0 cartridge built around an RP2354B chip, two 512K SRAM chips and an ESP32-S3 has been designed with gerbers, BOM and placement files ready for the first physical boards, and the firmware has been merged into the main fujinet-firmware project. Early software ported to the setup includes card and board games such as 5 Card Stud, Battleship and M.U.L.E., along with network-connected tools like Gmail and Google Calendar access. FujiNet originated as a WiFi and peripheral emulation device for Atari 8-bit computers before being adapted to other retro platforms.

Work has begun on bringing the FujiNet network adapter to the NES. A FujiNet Go NES Desktop app already runs the combination in emulation on Linux, Windows and macOS, letting users configure network hosts and load games across several common NES mapper types. On the hardware side, an open Rev0 cartridge built around an RP2354B chip, two 512K SRAM chips and an ESP32-S3 has been designed with gerbers, BOM and placement files ready for the first physical boards, and the firmware has been merged into the main fujinet-firmware project. Early software ported to the setup includes card and board games such as 5 Card Stud, Battleship and M.U.L.E., along with network-connected tools like Gmail and Google Calendar access. FujiNet originated as a WiFi and peripheral emulation device for Atari 8-bit computers before being adapted to other retro platforms.

Originally reported 31 October 2026. Read the full story with all the details on reddit.com/r/thisweekinretro

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