A Spartan-6 based devboard to emulate different retro-computers.
The hardware design and documentation are licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International.
FPGA cores, the firmware and other software parts are licensed by their own licenses.
- A 25k LE's Spartan-6 FPGA
- RP2040 MCU
- 4x USB Ports
- 2x 2MB 10ns SRAM chips
- 32MB SDRAM chip
- DVI output
- On-board FT812 video processor
- SAM2695 midi synth
- 2x microSD cards
- Tape In/Out interface
- DS3221 RTC
- 1kB EEPROM
- ESP8266 Wi-Fi module
- uBUS expansion connector
The latest stable PCB revision number is Rev.F3.
The latest development PCB revision number is Rev.G.
The latest cores that uses FT812 chip (boot and tsconf) now requires a generated clock by FPGA instead of 8MHz crystal oscillator. To perform the mod please do the following:
- Remove the crystal Y3 (8 MHz)
- Remove capacitors C40, C41 (18 pF)
- Find a FPGA net MCU_IO4 and connect it to the Y3 pin 1 by a thin wire
