The availability of the board to run Wirt's system was an issue pretty soon. There were even people who offered their own boards to fill the gap (e.g. https://web.archive.org/web/20160831063355/http://oberonstat...).

My system version instead runs on RISC-V, so no custom FPGA implementation, currently on an emulator, but eventually on the ESP32 (which has a much better availability).