RISC-V instructions are either 32 or 16 bits, and the size of the instruction is determined by 2 bits in a fixed place (the LSBs of the instruction word IIRC.)

RISC-V instructions are either 32 or 16 bits, and the size of the instruction is determined by 2 bits in a fixed place (the LSBs of the instruction word IIRC.) Much easier than x86-64.