All posts by Ilu


Two recently build nano SwinSID

Recently I built some nano SwinSID following these instructions.After testing one of these little buggers in my Franken-C64 I decided I want to try to connect it to an Arduino.

SwinSID in heavily modified C64

Some wire placing and code writing later I was able to access the SIDs registers and now I wanted to make some music…

Wiring done

The idea was: use a PC based C64 emulator and replace the SID emulation with the SwinSID connected via USB. First I tried jsidplay2, but I had no luck understanding the timing for the emulated 6510. Luckily I found kernal64, a C64 emulator implemented in Scala.

I had never before used Scala, but as it is Java based I was shortly after able to do this:


Please find my patched kernal64, the Arduino-sketch, schematics and some instructions here.


A Wifi modem for the C64

As there is a growing number of ESP8266 base Wifi-modems for retro computers out there I decided to build one myself.

My personal feature list:

  • connected to and powered by the C64 userport
  • simple, AT command based interface
  • usable with existing terminal software for the C64 out there
  • 2400 baud (I wanted to keep the circuit as simple as possible)
  • an OLED display for status information and show effect

The parts list (links are provided for reference and convenience only, they are no affiliate links):

The schematics (Updated on 20.08.2017):

The firmware can be found on GitHub, I used an existing firmware, removed stuff I didn’t need and added OLED support. To compile you need the Arduino IDE, the ESP8266 arduino core and the esp8266-oled-ssd1306 library.

Wifi-modem booting and connecting:Connected to Wifi:Connected to BBS: