Kölsch Computer

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Kölsch is an experimental single-board FPGA computer designed for timeless and retro applications/games.

Currently available for reservation. Final appearance, specifications, pricing and features subject to change.


  • Cologne Chip GateMate CCGM1A1 FPGA (20K LUTs, 4 PLLs)
  • 64MB 16-bit LPSDR SDRAM (166MHz)
  • 1 USB-C port for power, JTAG configuration and serial console
  • 2 USB host ports
  • MicroSD card slot
  • 1 Digilent Pmod™ compatible expansion port
  • 3.5mm TRRS Jack
    • Stereo audio output (requires FPGA-based delta-sigma DAC)
    • 4-bit composite video DAC
  • VGA port (supports up to 4096 colors)
  • RP2040 (Dual 32-bit ARM Cortex M0+) system supervisor
  • Yellow LED
  • 90mm x 50mm board dimensions (V2)