mega138RISC-V cpu E203 on tangMega 138K. Contribute to vackyzhaoE203_tangMega138K development by creating an account on .Sipeed recently launched the Mega 138K Pro dev board. It’s built around the GOWIN GW5AST RISC-V FPGA and features 2x SFP+ ports, a GbE port, dual DVI interfaces,