Internal Swiftlink compatible Wifi Modem


Internal hardware 6551 serial port with WiFi modem built in.

Out of stock

SKU: 6551esp8266 Category: Tag:


Designed to plug into the 6526 CIA socket at the rear of the 128 (the Userport) this device is compatible with Swiftlink. This means that most comms software such as Desterm on the 128 will recognise and work with this as if it was a swiftlink cart.

Instead of an RS232 port there is a WiFi modem (ESP8266) for connection to your home WiFi network and direct BBS action. No middle proxy server is required for most BBS.

Only one jumper wire is needed, going from this board to one of the IO pins on the cart slot (pin 7 or pin 10) depending on which address you want the device to be visible at.

Because it uses a 6551 the hardware serial baud rates go much higher than the software serial userport WiFi modems.

NOT recommended for metal cased 128D system.

Installation is as simple as lifting the CIA out of it’s socket and inserting it into this board, the whole unit then plugs into the now empty socket on the C128 motherboard. A jumper wire is connected from the single header pin to the cart port IO line.

This requires some technical knowledge to install. If you are not comfortable with replacing socketed chips in the 128 or connecting the jumper wire to the cart port, please do not buy it. All units will be tested prior to sale and I will not be able to refund or replace units damaged by incorrect installation. – Static sensitive – Please take care when installing.
Please take note of chip orientations when installing. There is a notch at the top of each chip and this is indicated on PCB in the socket and on the board outline. Failure to correctly insert the chips will result in damage not covered by any return policy.

Fully assembled PCB with all components
6551 chip
ESP8266-01 module (pre programmed with WiFi firmware)

Please note, the 6526 CIA chip is NOT included. You will need to use the existing chip from your 128.

All credit for the firmware used goes to Bo Zimmerman, full details of his WiFi modem firmware can be found here,