Zx Spectrum Sinclair - (SSSR - Soviet Computer Z80),A port expander and ROM card reader for the ZX Spectrum computers. - Share Project - PCBWay,Sinclair ZX Spectrum,Sinclair ZX Spectrum 128 Version 9G – Sinclair Collection Site,ZXGo+ 2Mb. ZX Spectrum based on FPGA. from aitorgomez.net on Tindie