Tag: uart

Adds one or two modern 115200-baud serial ports supported by RomWBW.

Current listings cover one-port and two-port layouts for Standard or Enhanced Bus. RomWBW 3.4 supports the hardware, with 0xA0 or 0xA8 used for added ports; 3.5 and later also support 0x80 and 0x88. More than four serial ports needs a custom RomWBW build.

Expansion-port UART family with SwiftLink-compatible GLINK232 and faster Turbo232-compatible GLINK232T forms.

GLINK232 A03 remains buildable from its schematic, Gerbers, and component-option tables. The faster assembled GLINK232T was unavailable while its Tindie seller was taking a break on 2026-07-30, and its page does not provide a complete fabrication package. The seller text misprints the top T rate as 203400 baud; the maker's overview and register table specify 230400 baud.

Open SwiftLink-compatible expansion-port UART design for connecting supported Commodore computers to DB9 RS-232 equipment.

RETRO Innovations does not sell assembled Link232 cartridges. The maker publishes EAGLE schematic and PCB files for builders. A separately mentioned future Turbo232-compatible revision has no documented release and is not part of this record.

Combines a SwiftLink-compatible high-speed serial cartridge with an ESP8266 Wi-Fi modem for Commodore 64 and 128 systems.

The assembled Tindie listing was retired by 2026-07-30. The project repository retains Eagle design files, case files, firmware, software patches, and setup documents. The maker says prebuilt units sometimes appear through the linked eBay seller page, but no specific current listing was verified.

Adds two Zilog SIO/2 serial ports for terminals, printers, and other devices.

Current kits are offered for Standard or Enhanced Bus. The Standard version includes a 20-pin header exposing CLK2, TX2, and RX2. Jumpers can allow either FTDI connection to power the RC2014.

Adds an internal SwiftLink-compatible ESP8266 Wi-Fi modem to the flat-model Commodore 128 while leaving its cartridge port available.

The assembled Tindie listing was retired by 2026-07-30, while the open project retains hardware and firmware material. The archived Tindie instructions specify socket U4, but the maker's merged README says U2, and human review found no surviving material that resolves the conflict. Do not install from the catalog summary; inspect the project files and verify the correct CIA socket against the exact board.

Adds an internal SwiftLink-compatible ESP8266 Wi-Fi modem to supported Commodore 64 longboards and Commodore 128DCR systems.

The assembled Tindie listing was retired by 2026-07-30. The open project retains Eagle design files, firmware, patches, and installation material. This is a board-specific internal installation that requires removing and reusing a 6526 CIA plus routing flying leads; verify the motherboard revision and instructions before fitting it.

Adds a 5 V TTL serial port and an independently usable 7.3728 MHz clock.

The current product is a through-hole kit, with a bare PCB also listed elsewhere. It normally replaces an existing 68B50 or SIO/2 module; using it alongside another serial port requires backplane modifications.