[the_panopticon]

RISC-V has defined support. See "3.4 The RV128I Base ISA" https://people.eecs.berkeley.edu/~krste/papers/EECS-2016-1.p.... You can find an emulator "RISC-V system emulator supporting the RV128IMAFDQC base ISA" https://bellard.org/tinyemu/, too.